question stringlengths 1 1.14k | options listlengths 4 4 | answer stringclasses 4
values | explanation stringlengths 0 3.68k ⌀ | dataset stringclasses 5
values |
|---|---|---|---|---|
Phase changing occurs when | [
"water is poured into a glass",
"cake is left to cool on the counter",
"jello mix is refrigerated",
"turkey is sliced into pieces"
] | C | science | |
Sarah has one piece of wood that is smooth and polished and another that is rough and unfinished. Which of the following is true? | [
"both pieces of wood will create the same amount of friction",
"the unfinished wood will generate more heat than the other while rubbed over the floor",
"the rough wood will more easily move when rubbed over the tile than the finished wood.",
"the finished wood will generate more heat when it is rubbed back a... | B | science | |
What causes rock layers to fold on top of each other? | [
"construction",
"Violent tremors",
"earthworms",
"tornados"
] | B | science | |
What do you call different organs working together? | [
"maturation systems",
"organ systems",
"cellular system",
"endocrine system"
] | B | science | |
What is considered to be a person's entire genetic information? | [
"biosphere",
"genome",
"chromosome",
"organism"
] | B | A person’s genome is all of his or her genetic information. In other words, the human genome is all the information that makes us human. And unless you have an identical twin, your genome is unique. No one else has a genome just like yours, though all our genomes are similar. | science |
Sex-linked traits are located on genes on what chromosomes? | [
"sex",
"neural",
"dna",
"reactive"
] | A | Sex-linked traits are located on genes on the sex chromosomes. | science |
What are the two types of vascular plants? | [
"dahlias and seed",
"ants and seed",
"seedless and seed",
"Water and spore"
] | C | Vascular plants are further divided into seedless and seed plants. | science |
An example of camouflage could be | [
"Cleaning make up off my face",
"Going naked outside on a rainy day",
"A sting ray covering itself in sand",
"Baking a cake for a birthday"
] | C | science | |
What is the term for diseases in which blood does not clot normally? | [
"diabetes",
"arthritis",
"hemophilia",
"lymphoma"
] | C | Hemophilia is a group of diseases in which blood does not clot normally. Factors in blood are involved in clotting. When you bleed, your body begins a coagulation cascade of reactions, involving special proteins known as coagulation factors, to stop that bleeding. When one or more of these clotting factors are missing,... | science |
If a gyroscope is not spinning, it acquires angular momentum in the direction of what? | [
"gravity",
"velocity",
"acceleration",
"torque"
] | D | This same logic explains the behavior of gyroscopes. Figure 10.31 shows the two forces acting on a spinning gyroscope. The torque produced is perpendicular to the angular momentum, thus the direction of the torque is changed, but not its magnitude. The gyroscope precesses around a vertical axis, since the torque is alw... | science |
What strong and lightweight manmade material is derived from hydrocarbons and used in ropes, tents and parachutes? | [
"aluminum",
"styrofoam",
"cellophane",
"nylon"
] | D | nylon: Human-made fabric. Material is made from hydrocarbons found in petroleum products. It is found in a number of plastic utensils. Taking advantages of its strength and light weight, nylon is a component of ropes, fishing nets, tents, and parachutes. | science |
Although it is not vital to humans, calcitonin is important for calcium homeostasis in adults of some species in what group characterized by backbones? | [
"mammals",
"invertebrates",
"vertebrates",
"reptiles"
] | C | science | |
The overall purpose of the light-dependent reactions is to convert light energy into this? | [
"calories",
"photosynthesis",
"chemical reactions",
"thermal energy"
] | C | How Light-Dependent Reactions Work The overall purpose of the light-dependent reactions is to convert light energy into chemical energy. This chemical energy will be used by the Calvin cycle to fuel the assembly of sugar molecules. The light-dependent reactions begin in a grouping of pigment molecules and proteins call... | science |
What organ does asthma periodically cause to narrow? | [
"ovaries",
"intestines",
"liver",
"lungs"
] | D | Asthma is a disease in which the air passages of the lungs periodically become too narrow, often with excessive mucus production. This causes difficulty breathing, coughing, and chest tightness. An asthma attack may be triggered by allergens, strenuous exercise, stress, or other factors. | science |
The primary site of carbohydrate digestion is in the? | [
"stomach",
"small intestine",
"mouth",
"large intestine"
] | B | The primary site of carbohydrate digestion is the small intestine. The secretion of αamylase in the small intestine converts any remaining starch molecules, as well as the dextrins, to maltose. Maltose is then cleaved into two glucose molecules by maltase. Disaccharides such as sucrose and lactose are not digested unti... | science |
What do eukaryotic cells have that compartmentalize their functions? | [
"cell walls",
"cytoplasm",
"vacuoles",
"internal membranes"
] | D | 6.2 Eukaryotic cells have internal membranes that compartmentalize their functions. | science |
The ostrich, kiwi, rhea, cassowary, and moa are examples of what kind of birds? | [
"predators",
"flightless",
"raptors",
"prehistoric"
] | B | Some birds have lost the ability to fly during the course of their evolution. Several flightless birds are shown in Figure below . They include the ostrich, kiwi, rhea, cassowary, and moa. All of these birds have long legs and are adapted for running. The penguins shown in the figure are also flightless birds, but they... | science |
What is a fold of the outer skin lining the shell called? | [
"stack",
"cortex",
"mantle",
"marble"
] | C | A mantle , or fold of the outer skin lining the shell. The mantle often releases calcium carbonate, which creates an external shell, just like the ones you find on the beach. The shell is made of chitin , a tough, semitransparent substance. | science |
Mechanisms for establishing cellular asymmetries include morphogen gradients, localized determinants, and what other type of interactions? | [
"electromagnetic",
"inductive",
"reductive",
"conductive"
] | B | science | |
What causes earthquakes at mid-ocean ridges to be small and shallow? | [
"plates are thick , young , and cold",
"plates are thin , young , and cold",
"plates are thick , old , and hot",
"plates are thin , young , and hot"
] | D | Earthquakes also occur at divergent plate boundaries. At mid-ocean ridges, these earthquakes tend to be small and shallow focus because the plates are thin, young, and hot. Earthquakes in the oceans are usually far from land, so they have little effect on peoples’ lives. On land, where continents are rifting apart, ear... | science |
Dispersal occurs only on what time scale? | [
"evolutionary",
"regular",
"developmental",
"conventional"
] | A | science | |
What is influences the inhibition of axillary buds by an apical bud? | [
"eliptical dominance",
"apical dominance",
"anterior dominance",
"cortical dominance"
] | B | science | |
A lot more sunlight is getting through to the forest floor in the summer than the summer before. | [
"a lumber company got resources from the forest",
"the sun is a lot brighter than the year before",
"A piece of the sun has been placed on the forest floor",
"mirrors have been placed in the tree tops by squirrels"
] | A | science | |
What is a dip slip fault where the dip of the fault plane is vertical? | [
"strike - theory",
"strike-slip",
"reverse slip",
"incline slip"
] | B | A strike-slip fault is a dip-slip fault where the dip of the fault plane is vertical. Strike-slip faults result from shear stresses. If you stand with one foot on each side of a strike-slip fault, one side will be moving toward you while the other side moves away from you. If your right foot moves toward you, the fault... | science |
What process joins two haploid gametes into a diploid zygote? | [
"fertilization",
"fusion",
"migration",
"embryo"
] | A | Fertilization joins two haploid gametes into a diploid zygote. | science |
What term is used to describe birds that mate for an entire season or even stay paired for their entire life? | [
"monogamous",
"polygamous",
"asexual",
"homogeneous"
] | A | These birds are pairing up so that they can produce offspring. Many birds are monogamous , keeping the same mate for an entire season. In some species, they even stay paired for their entire life. | science |
What happens to growth of plants and bacteria in warmer regions? | [
"they grow slower",
"they grow faster",
"they mutate",
"they are stunted"
] | B | In warmer regions, plants and bacteria grow faster. Plants and animals weather material and produce soils. In tropical regions, where temperature and precipitation are consistently high, thick soils form. Arid regions have thin soils. | science |
What kind of reproduction is vegetative reproduction? | [
"asexual",
"sexual",
"mitosis",
"meiosis"
] | A | Vegetative reproduction is a type of asexual reproduction found in plants. This type of reproduction occurs when new individuals are formed without the production of seeds or spores. The formation of new plants out of rhizomes or stolons is an example of vegetative reproductive, such as in the strawberry plant. Other p... | science |
What in saliva protects the lining of the mouth from abrasion and lubricates food for easier swallowing? | [
"hairs",
"spores",
"mucus",
"phloem"
] | C | science | |
Breasts are considered accessory organs of what body system? | [
"female reproductive system",
"digestive system",
"lymphatic system",
"nervous system"
] | A | The Breasts Whereas the breasts are located far from the other female reproductive organs, they are considered accessory organs of the female reproductive system. The function of the breasts is to supply milk to an infant in a process called lactation. The external features of the breast include a nipple surrounded by ... | science |
What are the 3 orders of amphibians? | [
"frogs, salamanders, caecilians",
"monotremata, artiodactyla, rodentia",
"bees, caddisflies, antilions",
"hagfish, lampreys, acanthodii"
] | A | There are only about 6200 known species of amphibians. They are placed in three orders: frogs, salamanders, and caecilians. Table below shows a picture of an amphibian in each order. It also provides additional information about the orders. | science |
Deep sea animals like giant squid live | [
"black inky ocean",
"in water sources",
"in liquid places",
"bottom of rivers"
] | A | science | |
Radon is inert and generally unreactive because it is which kind of gas? | [
"transitive gas",
"ideal gas",
"noble gas",
"ignoble gas"
] | C | Because radon is a noble gas, it is inert and generally unreactive. Despite this, exposure to even low concentrations of radon in air is quite dangerous. Describe the physical consequences of exposure to radon gas. Why are people who smoke more susceptible to these effects?. | science |
Invertebrates make up what percentage of all animal species? | [
"90 percent",
"50 percent",
"95 percent",
"30 percent"
] | C | Invertebrates are animals that lack a vertebral column, or backbone. All the phyla in Table above , except the Phylum Chordata, consist only of invertebrates. Even the Phylum Chordata includes some invertebrate taxa. Invertebrates make up about 95 percent of all animal species. | science |
What is a measure of how hot or cold the air is? | [
"precipitation",
"temperature",
"relativity",
"variation"
] | B | science | |
Conductive losses in the middle ear can be partially overcome by sending sound vibrations to what structure through the skull, the principle behind implants for hearing loss patients? | [
"cochlea",
"hammer and anvil",
"cornea",
"tympanic membrane"
] | A | Hearing losses can occur because of problems in the middle or inner ear. Conductive losses in the middle ear can be partially overcome by sending sound vibrations to the cochlea through the skull. Hearing aids for this purpose usually press against the bone behind the ear, rather than simply amplifying the sound sent i... | science |
What are broad explanations that are widely accepted as true? | [
"scientific experiments",
"informal theories",
"scientific theories",
"scientific hypotheses"
] | C | Scientific theories are broad explanations that are widely accepted as true. This is because they are supported by a great deal of evidence. | science |
Which of the following actions qualifies as cooking food? | [
"setting it in the sun",
"shaking it up and down",
"putting it in the freezer",
"running it under water"
] | A | science | |
What structure is a larger assembly of several polypeptide chains that are now referred to as subunits of the protein? | [
"geological structure",
"digital structure",
"quaternary structure",
"pyramid structure"
] | C | Quaternary structure is a larger assembly of several polypeptide chains, now referred to as subunits of the protein. The quaternary structure is stabilized by the same interactions as the tertiary structure. Complexes of two or more polypeptides are called multimers. Specifically, a dimer contains two subunits, a trime... | science |
Survival of an organism is positively impacted by | [
"access to food lacking in nutrients",
"access to dirty, tainted water",
"access to viable and required items",
"access to roadways and highways"
] | C | science | |
Plastics are common examples of synthetic polymers of what abundant element? | [
"silver",
"silicon",
"carbon",
"hydrogen"
] | C | Synthetic carbon polymers are produced in labs or factories. Plastics are common examples of synthetic carbon polymers. You are probably familiar with the plastic called polyethylene. All of the plastic items pictured in the Figure below are made of polyethylene. It consists of repeating monomers of ethylene (C 2 H 4 )... | science |
Which would likely result in a chemical change? | [
"a piece of paper in marbles",
"a piece of meat submerged in lemon juice",
"a blade of grass in sand",
"a piece of cotton in water"
] | B | science | |
What is the layer of tissue between the body and shell called? | [
"mantle",
"epidermis",
"collagen",
"cuticle"
] | A | Mollusks have a hard outer shell. There is a layer of tissue called the mantle between the shell and the body. | science |
What is the term for when the water of the ocean slowly rises and falls? | [
"tides",
"dew",
"currents",
"waves"
] | A | If you’ve ever visited an ocean shore, then you know that ocean water is always moving. Waves ripple through the water, as shown in Figure below . The water slowly rises and falls because of tides. You may see signs warning of currents that flow close to shore. What causes all these ocean motions? Different types of mo... | science |
According to the table, aluminum has an atomic number of 13. therefore, every aluminum atom has 13 protons in its what? | [
"nucleus",
"membrane",
"processes",
"components"
] | A | According to the table, aluminum has an atomic number of 13. Therefore, every aluminum atom has 13 protons in its nucleus. Iron has an atomic number of 26. Therefore, every iron atom has 26 protons in its nucleus. Carbon has an atomic number of 6. Therefore, every carbon atom has 6 protons in its nucleus. Saylor URL: h... | science |
The dual character is critical for the formation of the what? | [
"lipid bilayer",
"muscle bilayer",
"carbon bilayer",
"tissues bilayer"
] | A | The dual character is critical for the formation of the lipid bilayer. The hydrophilic portions of the molecule are in contact with the aqueous environment of the cell, while the hydrophobic portion of the lipids is in the interior of the bilayer and provides a barrier to the passive diffusion of most molecules. | science |
What term is used to describe a compound that does not conduct an electric current in either aqueous solution or in the molten state? | [
"porous",
"xerophyte",
"nonelectrolyte",
"kilocalorie"
] | C | A nonelectrolyte is a compound that does not conduct an electric current in either aqueous solution or in the molten state. Many molecular compounds, such as sugar or ethanol, are nonelectrolytes. When these compounds dissolve in water, they do not produce ions. The Figure below illustrates the difference between an el... | science |
Waxy leaves are used by some plants for what? | [
"Sodium Chloride",
"Gold",
"Keeping hyrdrogen dioxide",
"Barium"
] | C | science | |
A dry bush may burst into flames due to | [
"raining skies",
"wetter air",
"higher temps",
"faster birds"
] | C | science | |
What is produced during the hydrogenation of vegetable oils? | [
"complete fatty acids",
"trans fatty acids",
"partially-hydrogenated fatty acids",
"rich fatty acids"
] | B | taste, and nutrition of butter. (Preservatives and antioxidants are also added. ) In most commercial peanut butter, the peanut oil has been partially hydrogenated to prevent it from separating out. Consumers could decrease the amount of saturated fat in their diet by using the original unprocessed oils on their foods, ... | science |
Lattice energy cannot be measured directly. what is its calculation based on? | [
"change in temperature",
"microscopic inspection",
"chemical reactions",
"measured energy changes"
] | D | There are a number of different ways to measure the strength of a given crystal lattice. One way would be to measure the amount of energy needed to completely pull apart an ionic substance into isolated ions. This value, known as the lattice energy , cannot be measured directly, but it can be calculated based on measur... | science |
Evolving from a single common ancestor, what group of organisms was perhaps the dominant life form on earth 250 million years ago? | [
"atoms",
"proteins",
"acids",
"fungi"
] | D | Almost all fungi have a single common ancestor. The earliest fungi may have evolved about 600 million years ago. Fungi colonized land at least 460 million years ago. By 250 million years ago, they may have been the dominant life forms on Earth. | science |
When referring to genes, what term describes the property of having multiple phenotypic effects? | [
"prototype",
"pleiotrophy",
"xerophyte",
"archetype"
] | B | Many genes have multiple phenotypic effects, a property called pleiotropy. | science |
How can we reduce use of energy resources? | [
"restoration",
"modification",
"conservation",
"liberation"
] | C | We can reduce our use of energy resources and the pollution they cause by conserving energy. Conservation means saving resources by using them more efficiently or not using them at all. Figure below shows several ways that people can conserve energy in their daily lives. You can find more energy-saving tips at the URL ... | science |
An example of thermal conductivity is | [
"Leaving a fire log poker in the fire place",
"Sitting down on a bed",
"Throwing a large ball",
"Yelling into a megaphone at a crowd"
] | A | science | |
What term describes a drug that has an effect on the central nervous system? | [
"psychoactive drug",
"steroidal drug",
"elemental drug",
"nonaddictive drug"
] | A | Caffeine is an example of a psychoactive drug. It is found in coffee and many other products (see Table below ). Caffeine is a central nervous system stimulant . Like other stimulant drugs, it makes you feel more awake and alert. Other psychoactive drugs include alcohol, nicotine, and marijuana. Each has a different ef... | science |
How can it be shown that an electrical conductor is a vehicle for the flow of electricity? | [
"holding an electrified fence can kill you",
"electricity is unable to conduct well through rubber shoe soles",
"sticking a fork into an electrical outlet is safe if it is plastic",
"electricity is a volatile thing"
] | A | science | |
Where is glycogen created and stored in the body? | [
"extracts and muscles",
"Sore muscle",
"liver and muscles",
"Healing Muscles"
] | C | Connections of Other Sugars to Glucose Metabolism Glycogen, a polymer of glucose, is an energy storage molecule in animals. When there is adequate ATP present, excess glucose is shunted into glycogen for storage. Glycogen is made and stored in both liver and muscle. The glycogen will be hydrolyzed into glucose monomers... | science |
Some people put metal tags on their dog's collars, because in darkness, these collars can | [
"melt wax",
"reflect light",
"read books",
"stain clothes"
] | B | science | |
Which organisms break down either organic or inorganic molecules to supply energy for the cell? | [
"asexual organisms",
"photoreactive organisms",
"spicule organisms",
"chemotrophic organisms"
] | D | Chemotrophic organisms break down either organic or inorganic molecules to supply energy for the cell. Some chemotrophic organisms can also use their organic energy-supplying molecules as a carbon supply, which would make them chemoheterotrophs. | science |
The term science comes from a latin word that means? | [
"only knowledge",
"having information",
"having knowledge",
"were knowledge"
] | C | Understanding the "hows" and "whys" of the world is the goal of science. The term science comes from a Latin word that means "having knowledge. " But science is as much about adding to knowledge as it is about having knowledge. Science is a way of thinking as well as a set of facts. Science can be defined as a way of l... | science |
Generators usually transform kinetic energy into what kind of energy? | [
"electrical energy",
"nuclear energy",
"subsequent energy",
"potential energy"
] | A | Generators may produce either alternating or direct current, but they all change kinetic energy to electrical energy. | science |
When two decorative items for a refrigerator are placed back to back, | [
"they will refuse to touch",
"they will stick together",
"they will be sticky",
"they will be charged"
] | A | science | |
In a transverse wave, the highest point the wave reaches is known as the? | [
"flow",
"valley",
"crest",
"axis"
] | C | In a transverse wave, particles of the medium move up and down at right angles to the direction of the wave. Wave amplitude of a transverse wave is the difference in height between the crest and the resting position. The crest is the highest point particles of the medium reach. The higher the crests are, the greater th... | science |
Two animals with similar diets living in the same environments leads to them | [
"vying for the same prey",
"forming a strong friendship",
"moving to disparate environments",
"adopting different types of diets"
] | A | science | |
Living things that use energy to make food, both for themselves and other living things, are what part of an ecosystem? | [
"decomposers",
"producers",
"growers",
"consumers"
] | B | Producers are living things that use energy to make food. Producers make food for themselves and other living things. There are two types of producers:. | science |
What kind of relationship between glucagon and insulin is vital to managing fuel storage and consumption by body cells? | [
"antagonistic",
"commensalism",
"opportunistic",
"sympathetic"
] | A | science | |
What is the accelerating pattern of increasing population size called? | [
"exponential growth",
"reproducing growth",
"induced growth",
"limited growth"
] | A | Exponential Growth Charles Darwin, in his theory of natural selection, was greatly influenced by the English clergyman Thomas Malthus. Malthus published a book in 1798 stating that populations with unlimited natural resources grow very rapidly, and then population growth decreases as resources become depleted. This acc... | science |
The paranasal sinuses are hollow, air-filled spaces located within certain bones of the skull. all of the sinuses communicate with the nasal cavity (paranasal = “next to nasal cavity”) and are lined with this? | [
"fluid mucosa",
"oral mucosa",
"nasal mucosa",
"respiration mucosa"
] | C | Paranasal Sinuses The paranasal sinuses are hollow, air-filled spaces located within certain bones of the skull (Figure 7.18). All of the sinuses communicate with the nasal cavity (paranasal = “next to nasal cavity”) and are lined with nasal mucosa. They serve to reduce bone mass and thus lighten the skull, and they al... | science |
Because lack of sustenance 1 out of 4 people are | [
"chronically craving",
"fairies",
"unicorns",
"wizards"
] | A | science | |
An amoeba is a unique individual that | [
"makes friends",
"has multiple uses",
"works together",
"exists solitary"
] | D | science | |
What is an organic compound made up of small molecules called amino acids called? | [
"a fat",
"a carbohydrate",
"a compound",
"a protein"
] | D | A protein is an organic compound made up of small molecules called amino acids . There are 20 different amino acids commonly found in the proteins of living things. Small proteins may contain just a few hundred amino acids, whereas large proteins may contain thousands of amino acids. | science |
All living things require what, which most ecosystems obtain from the sun? | [
"heat",
"oxygen",
"energy",
"water"
] | C | All living things need energy. Most ecosystems get energy from the Sun. Producers use the energy to make food. They pass some of the energy to consumers. Food chains and food webs show how energy flows through ecosystems. | science |
When would most people wear shorts? | [
"a ski trip",
"a cold night",
"a cold morning",
"a noon picnic"
] | D | science | |
What type of light is composed of many rays having random polarization directions? | [
"reflected light",
"polarized light",
"unpolarized light",
"diffracted light"
] | C | 27.8 Polarization • Polarization is the attribute that wave oscillations have a definite direction relative to the direction of propagation of the wave. • EM waves are transverse waves that may be polarized. • The direction of polarization is defined to be the direction parallel to the electric field of the EM wave. • ... | science |
In which state of matter are particles completely separate from one another? | [
"solid state",
"phosphorus state",
"liquid state",
"gaseous state"
] | D | Most substances may exist in any of the three common states of matter. In the gaseous state, the molecular motion has completely overcome any attraction between the particles and the particles are totally separate from each other. There are large spaces between the particles and they move large distances between collis... | science |
What debated therapy offers a potential method for replacing neurons lost to injury or disease? | [
"stem cell therapy",
"cell production therapy",
"cell duplication",
"stem cell reduction"
] | A | science | |
To see evaporation you can wrap | [
"a metal in plastic",
"a bowl of water in plastic",
"a cat in a bag",
"money in plastic bags"
] | B | science | |
How can you prevent your ice cream from getting a sandy texture? | [
"by using fructose",
"by adding salt",
"by adding oil",
"by using lowfat milk"
] | A | Fructose, a sugar found in fruit, contains only carbon, oxygen, and hydrogen. It is used in ice cream to prevent a sandy texture. Complete combustion of 32.4 mg of fructose in oxygen produced 47.6 mg of CO2 and 19.4 mg of H2O. What is the empirical formula of fructose? 11. Coniine, the primary toxin in hemlock, contain... | science |
Atoms of the same element that have different masses are called what? | [
"mutations",
"variations",
"radioactive",
"isotopes"
] | D | Isotopes are atoms of the same element that have different masses. | science |
How many hydrogen atoms does a nitrogen atom of a primary amine have? | [
"six",
"two",
"four",
"ten"
] | B | The nitrogen atom of a primary amine is bonded to two hydrogen atoms and one carbon. The nitrogen atom of a secondary amine is bonded to one hydrogen and two carbons. The nitrogen atom of a tertiary amine is bonded to three carbon atoms. Amines are typically named by a common system rather than by IUPAC guidelines. The... | science |
In a glass of sweet tea the sugar is known as the solute and the water is known as what? | [
"solid",
"calcium",
"pigment",
"solvent"
] | D | If you’re like Tanya in this picture, you prefer your iced tea sweetened with sugar. Sweetened iced tea is a solution in which solid sugar (the solute) is dissolved in cold liquid tea, which is mostly water (the solvent). When you add sugar to tea, particles of water pull apart particles of sugar. The particles of suga... | science |
A blue colored item will only reflect | [
"all colors in the spectrum",
"only the color white",
"a combination of colors",
"an exact matching color"
] | D | science | |
A creature that is lacking domestication, and is also lacking a wild space, perhaps occupies | [
"a wild time",
"a distant planet",
"a small crater",
"a displayed habitat"
] | D | science | |
A painted turtle will have natural coloring, but a turtle that has been painted will have | [
"cold colors",
"thirty colors",
"artificial colors",
"natural colors"
] | C | science | |
What is the study of the chemical elements necessary for plant growth called? | [
"plant propagation",
"plant nutrition",
"photosynthesis",
"phototropism"
] | B | science | |
A storm moving over the earth will dump more rain on a | [
"meadow",
"sandy area",
"arctic",
"desert"
] | A | science | |
How thick is the earth's continental crust, on average? | [
"60 kilometers",
"15 kilometers",
"25 kilometers",
"35 kilometers"
] | D | Continental crust is much thicker than oceanic crust. It is 35 kilometers (22 miles) thick on average, but it varies a lot. Continental crust is made up of many different rocks. All three major rock types — igneous, metamorphic, and sedimentary — are found in the crust. On average, continental crust is much less dense ... | science |
Light produced by deep sea animals is used for? | [
"Navigation",
"Camouflage",
"Sexual Display",
"Catching Pray"
] | D | science | |
Monatomic cations have the same name as their parent element. what happens to monatomic anions? | [
"ends in - se",
"ends in - be",
"ends in - fe",
"ends in - de"
] | D | Monatomic cations have the same name as their parent element, whereas monatomic anions end in - ide . | science |
What is the common term for erythrocytesare, specialized cells that circulate delivering oxygen to cells and are formed from stem cells in the bone marrow? | [
"plateletes",
"red blood cells",
"white blood cells",
"monocytes"
] | B | Red Blood Cells Red blood cells, or erythrocytes (erythro- = “red”; -cyte = “cell”), are specialized cells that circulate through the body delivering oxygen to cells; they are formed from stem cells in the bone marrow. In mammals, red blood cells are small biconcave cells that at maturity do not contain a nucleus or mi... | science |
When liquefied soil flows over carcasses and drys it will become | [
"lakes",
"diamonds",
"bubbles",
"fossilized"
] | D | science | |
What is the fan-like superior region that forms the largest part of the hip bone and is united to the sacrum at the largely immobile sacroiliac joint? | [
"pica",
"spine",
"ilium",
"septum"
] | C | The ilium is the fan-like, superior region that forms the largest part of the hip bone. It is firmly united to the sacrum at the largely immobile sacroiliac joint (see Figure 8.12). The ischium forms the posteroinferior region of each hip bone. It supports the body when sitting. The pubis forms the anterior portion of ... | science |
What are the two types of vascular tissue? | [
"ectoderm and phloem",
"cytoplasm and ectoplasm",
"xylem and phloem",
"phloem and phlegm"
] | C | science | |
Potential energy changes to kinetic energy when using a | [
"computer",
"light bulb",
"television",
"bicycle"
] | D | science | |
What are steroid hormones made of? | [
"amino acid",
"organisms",
"water",
"lipids"
] | D | Steroid hormones are made of lipids, such as phospholipids and cholesterol. They are fat soluble, so they can diffuse across the plasma membrane of target cells and bind with receptors in the cytoplasm of the cell (see Figure below ). The steroid hormone and receptor form a complex that moves into the nucleus and influ... | science |
Through what does urine enter the bladder? | [
"the vas deferens",
"the enterocytes",
"the ureters",
"the tubules"
] | C | Nephrons filter about ¼ cup of body fluid per minute. In a 24-hour period, nephrons filter 180 liters of fluid, and 1.5 liters of the fluid is released as urine. Urine enters the bladder through the ureters. Similar to a balloon, the walls of the bladder are stretchy. The stretchy walls allow the bladder to hold a larg... | science |
When did we learn there was a hole in the ozone layer? | [
"1950s",
"1980s",
"1990's",
"1970s"
] | B | Ozone near the ground harms human health. Ground-level ozone is a pollutant. But the ozone layer in the stratosphere protects us from harmful solar rays. That’s why people were alarmed in the 1980s to learn that there was a hole in the ozone layer. | science |
Bryophyta is the formal taxonomic name for the phylum that consists solely of what? | [
"lichens",
"grasses",
"trees",
"mosses"
] | D | science | |
What triggers the fight-or-flight response? | [
"amphetamine",
"endorphine",
"epinephrine",
"respiration"
] | C | science |
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