BIL 150 GAINES TEST 3 QUESTIONS
AND ANSWERS
An otherwise healthy student in BIL 150 is infected with Epstein-Barr virus (EBV), the
double stranded DNA virus that causes infectious mononucleosis. The same student
had already been infected when she was a child, and she had merely experienced a
mild sore throat and swollen lymph nodes in her neck. This time, though infected, she
does not get sick.
The EBV antigen fragments will be presented by the virus-infected cells along with
which of the following?
A. dendritic cells
B. antibodies
C. class I MHC molecules
D. class II MHC molecules
E. complement - Correct Answers -C. class I MHC molecules
Which of the following directing embryonic development can be found in the unfertilized
egg?
A. tissue-specific proteins
B. proteins in the organizer region
C. cytoplasmic determinants
D. mRNAs from embryonic genome
E. proteins in the dorsal lip of the blastopore - Correct Answers -C. cytoplasmic
determinants
The extraordinary diversity of antibodies results in part from
A. The action of monoclonal antibodies
B. The splicing of protein molecules
C. The action of cytotoxic T cells
D. The rearrangement of genes
E. Their remarkable nonspecificity - Correct Answers -D. The rearrangement of genes
Which of the following secretes progesterone?
A. placenta
B. corpus luteum
C. follicle
D. Both A and B are correct
, E. A, B and C - Correct Answers -E. A, B and C
The role of cytotoxic T cells is the secretion of _____, which plays a role in the _____
immune response.
A. antibodies ... antibody-mediated
B. perforin ... humoral
C. interleukin ... humoral
D. antibodies ... humoral
E. perforin ... cell-mediated - Correct Answers -E. perforin ... cell-mediated
Suppose there was a mutation in the segment-polarity genes of Drosophila. What do
you suppose might be the outcome?
A. Legs will appear in the place of antennae.
B. Antennae will appear in a different part of their usual segment.
C. Several segments of the embryo will be missing.
D. Every other segment of the embryo will be missing.
E. Two heads would develop - Correct Answers -B. Antennae will appear in a different
part of their usual segment.
Which of the following is released into the oviduct during ovulation?
A. secondary oocyte
B. primary oocyte
C. mature ovum
D. oogonium
E. second polar body - Correct Answers -A. secondary oocyte
Quaking aspen can send out underground stems. New trees can sprout from these
stems. This is an example of what type of reproduction?
A. asexual
B. vegetative reproduction
C. alternation of generations
D. Both A and B are correct
E. Both A and C are correct - Correct Answers -D. Both A and B are correct
Which statement about the homeobox is NOT true?
A. It is transcribed and translated
B. It is found only in Drosophila
C. Proteins containing the homeodomain bind to DNA
D. It is a sequence of DNA that is 180 nucleotides long
E. It occurs in Hox genes - Correct Answers -B. It is found only in Drosophila
AND ANSWERS
An otherwise healthy student in BIL 150 is infected with Epstein-Barr virus (EBV), the
double stranded DNA virus that causes infectious mononucleosis. The same student
had already been infected when she was a child, and she had merely experienced a
mild sore throat and swollen lymph nodes in her neck. This time, though infected, she
does not get sick.
The EBV antigen fragments will be presented by the virus-infected cells along with
which of the following?
A. dendritic cells
B. antibodies
C. class I MHC molecules
D. class II MHC molecules
E. complement - Correct Answers -C. class I MHC molecules
Which of the following directing embryonic development can be found in the unfertilized
egg?
A. tissue-specific proteins
B. proteins in the organizer region
C. cytoplasmic determinants
D. mRNAs from embryonic genome
E. proteins in the dorsal lip of the blastopore - Correct Answers -C. cytoplasmic
determinants
The extraordinary diversity of antibodies results in part from
A. The action of monoclonal antibodies
B. The splicing of protein molecules
C. The action of cytotoxic T cells
D. The rearrangement of genes
E. Their remarkable nonspecificity - Correct Answers -D. The rearrangement of genes
Which of the following secretes progesterone?
A. placenta
B. corpus luteum
C. follicle
D. Both A and B are correct
, E. A, B and C - Correct Answers -E. A, B and C
The role of cytotoxic T cells is the secretion of _____, which plays a role in the _____
immune response.
A. antibodies ... antibody-mediated
B. perforin ... humoral
C. interleukin ... humoral
D. antibodies ... humoral
E. perforin ... cell-mediated - Correct Answers -E. perforin ... cell-mediated
Suppose there was a mutation in the segment-polarity genes of Drosophila. What do
you suppose might be the outcome?
A. Legs will appear in the place of antennae.
B. Antennae will appear in a different part of their usual segment.
C. Several segments of the embryo will be missing.
D. Every other segment of the embryo will be missing.
E. Two heads would develop - Correct Answers -B. Antennae will appear in a different
part of their usual segment.
Which of the following is released into the oviduct during ovulation?
A. secondary oocyte
B. primary oocyte
C. mature ovum
D. oogonium
E. second polar body - Correct Answers -A. secondary oocyte
Quaking aspen can send out underground stems. New trees can sprout from these
stems. This is an example of what type of reproduction?
A. asexual
B. vegetative reproduction
C. alternation of generations
D. Both A and B are correct
E. Both A and C are correct - Correct Answers -D. Both A and B are correct
Which statement about the homeobox is NOT true?
A. It is transcribed and translated
B. It is found only in Drosophila
C. Proteins containing the homeodomain bind to DNA
D. It is a sequence of DNA that is 180 nucleotides long
E. It occurs in Hox genes - Correct Answers -B. It is found only in Drosophila
