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25 Cards in this Set
- Front
- Back
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Which of the following organisms contain chlorophyll?
A. Viruses B. Fungi C. Bacteria D. Blue-green algae |
D. Blue-green algae, green plants, and some euglenans contain chlorophyll. Other organisms do not contain chlorophyll
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Kangaroos are best classified as...
A. carnivores B. primates C. marsupials D. ungulates |
C. Kangaroos are marsupials because they carry their young in a pouch in the mother's body.
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Bryophytes...
A. make seeds B. are nonvascular C. produce wood D. have roots |
B. Bryophytes are nonvascular plants represented by mosses, algae, and liverworts. Only Tracheophytes (vascular plants) fit answers A,C, and D.
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The large intestine is part of the ______ system.
A. digestive B. respiratory C. endocrine D. circulatory |
A. The large intestine retrieves water and minerals from waste matter. It is part of the digestive system, which breaks down food into usable components and absorbs them.
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Which of the following do not provide calories in your diet?
A. Protein B. Carboyhdrates C. Fiber D. Fats |
C. Fiber produces bulk to aid in the elimination of wastes. Protein, carbohydrates, and fats all provide calories.
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The traditional chromosome representation for a human female is...
A. XX B. YY C. XY D. XYX |
A. A genetic human female has tow chromosomes, one X from the mother and one X from the fater. Answer C represents a male, and answers B and D are not normally occurring.
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The study of the relationship between living things and their environment is called...
A. botany B. biology C. ecology D. geology |
C. The following scientific disciplines are matched with their areas of study: biology/living things, botany/plants, geology/land forms and structures, ecology/living things and their environment.
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The storage areas in cells are called...
A. mitochondria B. ribosomes C. nuclei D. vacuoles |
D. Vacuoles are storage areas. Robosomes form protein. Mitochondria release energy. Nuclei control cell activity.
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An example of a lever is a(n)..
A. doorknob B. seesaw C. screw D. elevator |
B. All choices are examples of simple machines: seesaw/lever, doorknob/wheel and axle, screw/inclined plane, elevator/pulley
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The capacity to do work is called...
A. energy B. power C. force D. efficiency |
A. Energy is the capacity to do work. Force is a push or pull on an object. Work = force x distance.
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Electric current in metals results form the flow of ______ from one place to another.
A. ions B. protons C. neutrons D. electrons |
D. Electrons in metals are loosely connected to atoms and therefore can travel. Protons and neutrons are tightly held in the nuclei of atoms. Ions area charged atoms, and can't flow easily through solid materials.
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When two simple magnets are brought together, the north pole of one will attract _______ of the other.
A. the north pole B. the south pole C. any part D. no part |
B. The north pole of one magnet will attract the south pole of another magnet while repelling the north pole of the other magnet.
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Mirages are caused by...
A. reflection B. diffraction C. refraction D. diffusion |
C. A mirage is caused when refraction occurs between air of different densities, such as cool autumn air and very hot air immediately above a sunny road.
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When working with waves, frequency x _____ = speed.
A. hertz B. amplitude C. crest D. wavelength |
D. Frequency x wavelength = speed. Hertz is the measurement for frequency. Amplitude is the height of a wave. The crest is the high point of the wave.
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The periodic table lists elements according to...
A. mass B. charge C. order of discovery D. atomic number |
D. The periodic table lists elements according to atomic number. Mass and charge are not used to arrange elements, because atoms of the same element may vary in mass (isotopes) or charge (ions).
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Movement of molecules in matter ceases near...
A. -273 degrees C. B. 0 degrees C. C. 100 degrees C. D. 212 degrees C. |
A. Molecules move almost constantly in proportion to their relative temperature. Molecules at lower temperatures move less, until they cease movement near absolute zero which is -273 degrees C.
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A solution in which more solute can dissolve at a given pressure and temperature may best be called...
A. concentrated B. saturated C. unsaturated D. superaturated |
C. Unstaturated solutions are able to dissolve more solute, while saturated solutions are not. Supersaturated solutions are unstable and will readily form crystals due to an excess of solute.
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An example of a chemical change is...
A. burning B. melting C. shredding D. denting |
A. A chemical change results in the formation of new molecules. Choices B, C, and D represent physical changes. In burning, chemicals are broken down in the presence of oxygen to form new chemicals, including water and carbon dioxide.
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Which of the following is not an agent of erosion?
A. Running water B. Wind C. Glaciers D. Oxidation |
D. Erosion is the breaking down of rock and movement of soil by physical means. Oxidation is a chemical process.
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Wind is most directly caused by differences in
A. air pressure B. humidity C. temperature D. pollution |
A. Wind is caused by differences in air pressure. The boundaries between areas of different pressure are called fronts. Fronts are where most winds are formed.
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Seasons occur because Earth's axis is tilted ______ from perpendicular to its plane of orbit.
A. 23 1/2 degrees B. 67 degrees C. 90 degrees D. 180 degrees |
A. The earth is tilted on its axis 23 1/2 degrees. This causes the seasons as well as changes in day length to occur during the year.
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Fiber's primary role in the diet is...
A. providing energy B. growth and repair of body tissues C. metabolic functioning D. aiding in removal of body wastes |
D. Fiber's main role is providing bulk to aid the large intestine in carrying away wastes.
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Water freezes at...
A. 0 degrees C. B. 32 degrees C. C. 0 degrees F. D. 212 degrees F. |
A. Water freezes at 0 degrees C, which is equal to 32 degrees F. 212 degrees F is the boiling point of water.
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Broad, flat, low-hanging clouds are called...
A. cirrus B. Cumulus C. stratus D. altostratus |
C. All the answers are cloud types: cirrus/wispy; cumulus/fluffy; stratus/low, flat; altostratus/high, flat.
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A mixture of sugar and a water is best called a ..
A. compound B. solution C. suspension D. colloid |
B. All choices represent mixtures. Solutions are mixtures in liquid or gas phase, in which one material is dissolved in another.
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