BIO 1500 QUIZ QUESTIONS WITH
COMPLETE SOLUTIONS
If all chromosomes are not attached to the mitotic spindle at the M phase checkpoint,
the cells would most likely be arrested at which of the following points in the cell
division cycle or mitosis?
a. prophase
b. telophase
c. G2
d. metaphase - ANSWER-metaphase
Females of many insect species, including honeybee queens, can store gametes
shed by their mating partners in which of the following structures?
a. uterus
b. spermatheca
c. nests
d. abdominal tract - ANSWER-spermatheca
Which of the following occurs during S phase?
a. spindle formation
b. condensation of the chromosomes
c. separation of sister chromatids
d. replication of the DNA - ANSWER-replication of the DNA
Which of the following statements best describes scaffolding proteins?
a. large molecules to which several relay proteins attach to facilitate cascade effects
b. microtubule arrays that allow lipid-soluble hormones to get from the cell
membrane to the nuclear pores
c. proteins that enter the nucleus of a cell to regulate transcription
d. relay proteins that orient receptors and their ligands in appropriate directions to
facilitate complex formation - ANSWER-large molecules to which several relay
proteins attach to facilitate cascade effects
Which of the following statements best describes the effect of a mutation that alters
the structure of the a factor so that it no longer binds to the corresponding receptor
on a cells?
a. the a cells will fail to initiate the shape changes necessary for mating after binding
a factor
b. the a cells will mate with other a cells rather than a cells
c. the a cells will fail to initiate the shape changes necessary for mating
d. the a cells will fail to secrete the a factor - ANSWER-the a cells will fail to initiate
the shape changes necessary for mating
How does natural selection apply to sexual reproduction as opposed to asexual
reproduction?
a. sexual reproduction results in more new mutations, some of which will be better
adapted
b. sexual reproduction utilizes far less energy than asexual reproduction
, c sexual reproduction results in new gene combinations, some of which will have
increased reproductive fitness
d. sexual reproduction allows more offspring to be produced increasing odds of
survival - ANSWER-sexual reproduction results in new gene combinations, some of
which will have increased reproductive fitness
A female lizard is kept isolated in a zoo for five years. Then, to everyone's surprise,
she lays four viable eggs that hatch to produce offspring that are genetically identical
to her. What type of reproduction most likely occurred?
a. sexual
b. budding
c. parthenogenesis
d. fission - ANSWER-parthenogenesis
In which phase of mitosis do the sister chromatids become daughter chromosomes?
a. telophase
b. anaphase
c. metaphase
d. prophase - ANSWER-anaphase
Which of the following conditions is required for a target organ to respond to a
particular hormone?
a. The target organ must be the same as the organ that produced the hormone
b. Cells in the target organ must modify their plasma membranes to allow the
hormone to enter the cytoplasm
c. the target organ must have receptors that recognizer and bind the hormone
molecule
d. the target organ must have the opposite mating type of the organ that produced
the hormone - ANSWER-the target organ must have receptors that recognizer and
bind the hormone molecule
Which of the sequences below best describes the sequential steps (numbered 1-5)
in a signal transduction pathway that utilizes a G protein-coupled receptor?
1. The signal-receptor complex activates a G protein
2. Protein kinases are activated
3. A signal molecule binds to a receptor
4. Target proteins are phosphorylated
5. cAMP is produced
a. 3, 1, 2, 4, 5
b. 1, 2, 3, 4, 5
c. 1, 2, 5, 3, 4
d. 3, 1, 5, 2, 4 - ANSWER-3, 1, 5, 2, 4
Independent assortment of chromosomes is a result of which of the following?
a. the random distribution of sister chromatids to the two daughter cells during
anaphase II
b. the diverse combination of alleles that may be found within any given
chromosomes
c. the random combinations of eggs and sperm during fertilization
COMPLETE SOLUTIONS
If all chromosomes are not attached to the mitotic spindle at the M phase checkpoint,
the cells would most likely be arrested at which of the following points in the cell
division cycle or mitosis?
a. prophase
b. telophase
c. G2
d. metaphase - ANSWER-metaphase
Females of many insect species, including honeybee queens, can store gametes
shed by their mating partners in which of the following structures?
a. uterus
b. spermatheca
c. nests
d. abdominal tract - ANSWER-spermatheca
Which of the following occurs during S phase?
a. spindle formation
b. condensation of the chromosomes
c. separation of sister chromatids
d. replication of the DNA - ANSWER-replication of the DNA
Which of the following statements best describes scaffolding proteins?
a. large molecules to which several relay proteins attach to facilitate cascade effects
b. microtubule arrays that allow lipid-soluble hormones to get from the cell
membrane to the nuclear pores
c. proteins that enter the nucleus of a cell to regulate transcription
d. relay proteins that orient receptors and their ligands in appropriate directions to
facilitate complex formation - ANSWER-large molecules to which several relay
proteins attach to facilitate cascade effects
Which of the following statements best describes the effect of a mutation that alters
the structure of the a factor so that it no longer binds to the corresponding receptor
on a cells?
a. the a cells will fail to initiate the shape changes necessary for mating after binding
a factor
b. the a cells will mate with other a cells rather than a cells
c. the a cells will fail to initiate the shape changes necessary for mating
d. the a cells will fail to secrete the a factor - ANSWER-the a cells will fail to initiate
the shape changes necessary for mating
How does natural selection apply to sexual reproduction as opposed to asexual
reproduction?
a. sexual reproduction results in more new mutations, some of which will be better
adapted
b. sexual reproduction utilizes far less energy than asexual reproduction
, c sexual reproduction results in new gene combinations, some of which will have
increased reproductive fitness
d. sexual reproduction allows more offspring to be produced increasing odds of
survival - ANSWER-sexual reproduction results in new gene combinations, some of
which will have increased reproductive fitness
A female lizard is kept isolated in a zoo for five years. Then, to everyone's surprise,
she lays four viable eggs that hatch to produce offspring that are genetically identical
to her. What type of reproduction most likely occurred?
a. sexual
b. budding
c. parthenogenesis
d. fission - ANSWER-parthenogenesis
In which phase of mitosis do the sister chromatids become daughter chromosomes?
a. telophase
b. anaphase
c. metaphase
d. prophase - ANSWER-anaphase
Which of the following conditions is required for a target organ to respond to a
particular hormone?
a. The target organ must be the same as the organ that produced the hormone
b. Cells in the target organ must modify their plasma membranes to allow the
hormone to enter the cytoplasm
c. the target organ must have receptors that recognizer and bind the hormone
molecule
d. the target organ must have the opposite mating type of the organ that produced
the hormone - ANSWER-the target organ must have receptors that recognizer and
bind the hormone molecule
Which of the sequences below best describes the sequential steps (numbered 1-5)
in a signal transduction pathway that utilizes a G protein-coupled receptor?
1. The signal-receptor complex activates a G protein
2. Protein kinases are activated
3. A signal molecule binds to a receptor
4. Target proteins are phosphorylated
5. cAMP is produced
a. 3, 1, 2, 4, 5
b. 1, 2, 3, 4, 5
c. 1, 2, 5, 3, 4
d. 3, 1, 5, 2, 4 - ANSWER-3, 1, 5, 2, 4
Independent assortment of chromosomes is a result of which of the following?
a. the random distribution of sister chromatids to the two daughter cells during
anaphase II
b. the diverse combination of alleles that may be found within any given
chromosomes
c. the random combinations of eggs and sperm during fertilization
