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CLEP BIOLOGY EXAM REVIEW QUESTIONS
AND VERIFIED ANSWERS| GRADE A | 100%
CORRECT
**Question 1: What is the key limiting factor on cell size?**
Answer: The size of a cell is limited by the ratio of its surface
area to volume.
**Question 2: Under what condition will a cell remain stable?**
Answer: A cell will only remain stable if the surface area of the
plasma membrane maintains a balance with the volume of the cytoplasm.
**Question 3: What does the salivary gland do?**
Answer: The salivary gland secretes saliva which enters the
digestive tract and aids the digestive process.
**Question 4: What did Gregor Mendel study?**
Answer: Studied the relationships between traits expressed in
parents and offspring and the genes that caused the traits to be expressed.
**Question 5: What is required for a population to become an
established part of an island ecosystem?**
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Answer: In order to become an established part of an island
ecosystem there must be a population large enough to ensure successful reproduction, a food source, a suitable habitat, and a source of moisture.
**Question 6: What are lymphocytes?**
Answer: Are cells involved in immunity and are produced in
bone marrow as stem cells.
**Question 7: What do B cells do?**
Answer: Produce antibodies into the bloodstream that find and
attach themselves to foreign antigens (toxins, bacteria).
**Question 8: What do T cells do?**
Answer: Some patrol the blood for antigens, but are also
equipped to destroy antigens. They may regulate immune responses as well.
**Question 9: How do mass extinctions promote
diversification?**
Answer: Mass extinctions promote diversification because
ecological niches open up, making conditions favorable for the establishment of new, diverse species.
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**Question 10: What are the common elements found in
proteins?**
Answer: Carbon, Hydrogen, Oxygen, and Nitrogen
**Question 11: What phylum are snakes in?**
Answer: Chordata
**Question 12: What is cellular respiration?**
Answer: Is the process that releases energy for use by the cell.
**Question 13: How does a hydrogen bond compare in strength
to other bonds?**
Answer: Is weaker than ionic, covalent, disulfide, or double
bonds.
**Question 14: What does a hydrogen bond involve?**
Answer: The attraction of atoms of different polarity and can be
easily broken.
**Question 15: What do ionic bonds involve?**
Answer: The transfer of electrons.
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**Question 16: What do covalent bonds do?**
Answer: Share electrons.
**Question 17: How are chimpanzees related to Homo
sapiens?**
Answer: Are more closely related to Homo Sapiens than to other
apes, but Homo Sapiens did not evolve from chimpanzees.
**Question 18: When did the lineage of Homo sapiens diverge
from chimpanzees?**
Answer: About five million years ago the lineage that led to the
modern Homo Sapiens diverged from the lineage that led to the modern chimpanzee.
**Question 19: What is the evolution leading to Homo sapiens
like?**
Answer: Is more like branching out of a tree with dead ends and
new branches appearing simultaneously than like steps on a ladder.
**Question 20: What characteristic developed first in early
hominids?**
Answer: Early hominids stood upright before there was an
increase in brain size.