| PART A -
Answer all 35 questions in this part. (35)
Directions (l-35): For each statement or question, write on the separate
sheet the number of the word or expression that, of those given,
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
(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
(4) The scientist observed 300 deer in various locations in captivity, but
none in natural
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
5 If a human system fails to function properly,
what is the most likely result?
(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
(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
(2) The cell membrane is capable of receiving
and recognizing chemical
(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
(1) pathogenic agents (3) antibiotics
(2) chloroplasts (4) receptor molecules