PART A -
Answer all 35 questions in this part. (35)
Directions (l-35): For each statement or question, write on the separate
answer
sheet the number of the word or expression that, of those given,
best completes
the statement or answers the question.1 Diagrams, tables, and graphs are used by scientists mainly to
(1) design a research plan for an experiment
(2) test a hypothesis
(3) organize data
(4) predict the independent variable
2 A scientist tested a hypothesis that white-tailed deer would prefer apples
over corn as a
primary food source. The findings of the test, in which the
scientist claimed that the deer
preferred apples, were published. Which
research technique, if used by the scientist, might
result in this claim being
questioned?
(1) The scientist observed four deer in different locations at various
times of the day.
(2) The scientist observed a total of 500 deer in
20 different locations
at various times
of the day.
(3) The scientist observed 200 deer in various natural settings, but none
in captivity.
(4) The scientist observed 300 deer in various locations in captivity, but
none in natural
settings.
3 What happens to certain nutrient molecules after they pass into muscle cells?
(1) They are replicated in the nucleus.
(2) They are acted on by enzymes and release the energy they contain.
(3) They are changed into tissues and organs in the cytoplasm.
(4) They enter chloroplasts, where they can absorb light energy.
4 A medical test indicates that a patient has a defective protein. This
condition is most likely due to a change in the directions coded in the
(1) number of hydrogen atoms in starch molecules
(2) sequence of inorganic molecules
(3) number of carbon atoms in sugar molecules
(4) sequence of subunits in DNA
5 If a human system fails to function properly,
what is the most likely result?
(1) a stable rate of metabolism
(2) a disturbance in homeostasis
(3) a change in the method of cellular respiration
(4) a change in the function of DNA
6 Which statement regarding the functioning of the
cell membrane of all
organisms is not correct?
(1) The cell membrane forms a boundary that
separates the cellular
contents from the
outside
environment.
(2) The cell membrane is capable of receiving
and recognizing chemical
signals.
(3) The cell membrane forms a barrier that
keeps all substances that
might harm the cell
from entering the cell.
(4) The cell membrane controls the movement of molecules into and
out of the cell.
7 In multicellular organisms, cells must be able to
communicate with each
other. Structures that
enable most cells to communicate with each
other are
known as
(1) pathogenic agents (3) antibiotics
(2) chloroplasts (4) receptor molecules
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