Multiple Choice
Identify the
letter of the choice that best completes the statement or answers the question.
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1.
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What would a
researcher use to show comparisons between variables? a. | Hypothesis | c. | Word-processing
program | b. | Conclusion | d. | Graph | | | | |
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2.
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What is the
main difference between a prokaryote and a eukaryote? a. | The need for
nutrients | c. | Organelles | b. | Plasma membranes | d. | Algae | | | | |
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3.
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How many
carbon atoms are in this nucleotide?
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4.
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Why is DNA
replication important? a. | Replication forms the characteristic structure of a strand of
DNA. | b. | The process changes
messenger RNA into transfer RNA. | c. | A species could not survive and individuals in the species could not
successfully grow and reproduce without DNA replication. | d. | Replication is the
process that results in the formation of amino acids that make up a
protein. | | |
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5.
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Which of the
following bases pairs with adenine in RNA? a. | thymine | c. | uracil | b. | guanine | d. | cytosine | | | | |
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6.
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Which of the
following pairs of terms are NOT related? a. | transfer RNA—translation | c. | DNA molecule—replication | b. | messenger
RNA—transcription | d. | transfer
RNA—replication | | | | |
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7.
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What kind of
genetic mutation is shown in the art below?
a. | chromosomal
inversion | c. | deletion | b. | point mutation | d. | chromosomal translocation | | | | |
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8.
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Using the
art above, what is the phenotype of each parent? a. | both dominant | c. | one dominant and one recessive | b. | both
recessive | d. | unable to tell from the
square | | | | |
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9.
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A plant
shows incomplete dominance. First generation offspring of a cross between plants with white flowers
and plants with purple flowers will produce flowers with which of the following
colors? a. | white | c. | purple | b. | light blue | d. | deep purple | | | | |
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10.
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Which of the
following best describes the shape and arrangement of the bacteria shown in C in the
diagram? a. | streptococci | c. | diplococci | b. | staphylococci | d. | diplobacilli | | | | |
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11.
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Bacteria
that grow in the presence of the antibiotic, penicillin, develop holes in their cell walls. Which of
the following explains why penicillin is effective against some bacteria? a. | Water enters the holes
in these bacteria and causes osmotic rupture. | b. | Penicillin causes the
flagella to become inactive. | c. | The pili of the bacteria puncture the
penicillin. | d. | Penicillin produces oxygen, which kills any kind of bacteria.
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12.
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How is an
open circulatory system beneficial to an organism? a. | It allows gases to
enter and leave the body through pores. | b. | It exposes body organs directly to blood that contains nutrients and
oxygen. | c. | It keeps blood flowing in the vessels. | d. | It allows wastes to
easily leave the body. | | |
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13.
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Which
of these systems would best protect you from getting a cold? a. | Digestive
system | c. | Excretory
system | b. | Circulatory system | d. | Immune system | | | | |
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14.
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Using
the art above, human body temperature is approximately 310 K. What is human body temperature in
C°? a. | 0°C | c. | 37°C | b. | 20°C | d. | 98.6°C | | | | |
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15.
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An
apple has a mass of 167 g. A store worker found the mass of the apple to be 167 g, and 166 g on
different balances. Which of the following statements is true? a. | The measurements
were accurate but not precise. | b. | The measurements were precise but not
accurate. | c. | The measurements were both precise and
accurate. | d. | The measurements were neither accurate nor
precise. | | |
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Percent of Each Base in DNA Samples | Source of Sample | A | G | C | T | Human
liver | 30.3 | 19.5 | 19.9 | 30.3 | Human
thymus | 30.9 | 19.9 | 19.8 | 29.4 | Herring
sperm | 27.8 | 22.2 | 22.6 | 27.5 | Yeast | 31.7 | 18.2 | 17.4 | 32.6 | | | | | |
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16.
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Based on the
art above, which of the following is true? a. | The ratio of A:T and G:C is 1:1 no matter what the source of the
DNA. | b. | The ratio of A:C and
G:T is 1:1 no matter what the source of the DNA. | c. | The ratio of A:G and
C:T is 1:1 no matter what the source of the DNA. | d. | There are no 1:1 ratios
between the bases because the DNA is from different sources. | | |
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17.
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One type of
natural selection favors average individuals in a population. This type of evolution is called
stabilizing selection. Which of the following statements does NOT support stabilizing
selection? a. | Larger than average
individuals may be at a disadvantage because they can be seen and captured more
easily. | b. | Smaller than average individuals may be at a disadvantage because they
might not be able to obtain enough food to survive and reproduce. | c. | Individuals with either
of two extreme forms of a trait are at a selective advantage. | d. | Individuals of average
size are more likely to survive and reproduce. | | |
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18.
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How does
parasitism differ from predation? a. | No organism is harmed in a parasitic
relationship. | b. | No organism is harmed in a predator-prey
relationship. | c. | Parasitism does not always result in the death of an
organism. | d. | Parasitism does not occur among mammals. | | |
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19.
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What word is
most closely related to the meaning of symbiosis? a. | Family | c. | Neighborhood | b. | Continent | d. | Ocean | | | | |
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20.
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What
advantage do food webs have over food chains as models? a. | A food web shows
numerous feeding relationships. | b. | A food web shows how energy moves through an
ecosystem. | c. | A food web shows how matter moves through an
ecosystem. | d. | A food web represents feeding steps, or trophic
levels. | | |
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21.
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Imagine a
food chain as an electrical outlet with several sockets lined up in a row. What type of organism can
be thought of as a plug that can fit into the food chain at any point? a. | Autotroph | c. | Decomposer | b. | Omnivore | d. | Herbivore | | | | |
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22.
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Which of the
following is NOT a characteristic shared by green algae and plants? a. | Cell walls with
cellulose | c. | Chlorophyll | b. | Root systems | d. | Stored food | | | | |
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23.
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How is
energy replenished in ecosystems? a. | By the Sun | c. | By recycling | b. | By body
functions | d. | By food
chains | | | | |
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24.
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What
distinguishes producers from other organisms? a. | They consume a variety of foods. | c. | They photosynthesize. | b. | They feed at different
trophic levels. | d. | They are
abiotic. | | | | |
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25.
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You
are working with your lab partner, and your lab partner burns his hand. How do you apply first
aid? a. | Apply direct
pressure | b. | Apply cold water and inform the
instructor | c. | Use the safety shower | d. | Apply cold
compresses | | |
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