BIO 183 EXAM 4 | COMPREHENSIVE BIOLOGY STUDY GUIDE, PRACTICE
QUESTIONS & ANSWERS 2026/2027
Which of the following is a major function of cytotoxic T lymphocytes? - ANS ✔✔Attacking cells infected
by a virus
The main function of an antibody is to - ANS ✔✔initiate the destruction of bacteria.
Which of the following is a true statement about bacteria? - ANS ✔✔They enable some bacteria to
become pathogens.
A viroid is? - ANS ✔✔piece of RNA that infects plant cells.
Which of the following best describes the enzyme "reverse transcriptase"? - ANS ✔✔It is an enzyme that
RNA-viruses use to make the host cell copy DNA from viral RNA.
What is the purpose of restriction enzymes in nature? - ANS ✔✔They are used by bacteria to prevent
infection by viruses.
In a DNA fingerprint using the RFLP method, what forms the bands of the "fingerprint"? - ANS
✔✔determine which genes have been expressed by a given cell type
Which of the following is true of a cell's proteome? - ANS ✔✔It represents all of the proteins within a
cell.
Where is DNA located within plant cells? - ANS ✔✔In chloroplasts and the nucleus only
In chloroplasts only
In the nucleus only
In mitochondria only
Analysis of human mitochondrial DNA can be use to determine - ANS ✔✔whether a person is related to
a dead person
in what region of the world a person's ancestors lived
none of these
whether a person is related to another living person
How can a researcher locate species that have genes which are homologous to a given human gene? -
ANS ✔✔By using the computer program BLAST
What was the source of DNA used in the human genome project? - ANS ✔✔DNA was obtained
anonymously from 100 people, but only a few samples were used.
What is the purpose of a vector in gene cloning procedures? - ANS ✔✔The vector allows a gene of
interest to be taken up and replicated by bacteria.
QUESTIONS & ANSWERS 2026/2027
Which of the following is a major function of cytotoxic T lymphocytes? - ANS ✔✔Attacking cells infected
by a virus
The main function of an antibody is to - ANS ✔✔initiate the destruction of bacteria.
Which of the following is a true statement about bacteria? - ANS ✔✔They enable some bacteria to
become pathogens.
A viroid is? - ANS ✔✔piece of RNA that infects plant cells.
Which of the following best describes the enzyme "reverse transcriptase"? - ANS ✔✔It is an enzyme that
RNA-viruses use to make the host cell copy DNA from viral RNA.
What is the purpose of restriction enzymes in nature? - ANS ✔✔They are used by bacteria to prevent
infection by viruses.
In a DNA fingerprint using the RFLP method, what forms the bands of the "fingerprint"? - ANS
✔✔determine which genes have been expressed by a given cell type
Which of the following is true of a cell's proteome? - ANS ✔✔It represents all of the proteins within a
cell.
Where is DNA located within plant cells? - ANS ✔✔In chloroplasts and the nucleus only
In chloroplasts only
In the nucleus only
In mitochondria only
Analysis of human mitochondrial DNA can be use to determine - ANS ✔✔whether a person is related to
a dead person
in what region of the world a person's ancestors lived
none of these
whether a person is related to another living person
How can a researcher locate species that have genes which are homologous to a given human gene? -
ANS ✔✔By using the computer program BLAST
What was the source of DNA used in the human genome project? - ANS ✔✔DNA was obtained
anonymously from 100 people, but only a few samples were used.
What is the purpose of a vector in gene cloning procedures? - ANS ✔✔The vector allows a gene of
interest to be taken up and replicated by bacteria.
