CCBC BIO 110 UPDATED EXAM QUESTIONS
AND CORRECT ANSWERS
●● During which phase does crossing-over occur?
Answer: prophase-I
●● What is the function of nucleosomes?
Answer: To prevent DNA strands from tangling.
●● Which of the following combinations of letters accurately represents
two sister chromatids?
Answer: A and C
●● During which of the following stages of meiosis do the sister
chromatids separate?
Answer: anaphase II
●● Which of the following combinations of letters accurately represents
two homologous chromatids?
Answer: A and D
●● A maternal homologue and a paternal homologue synapse to form:
,Answer: a tetrad.
●● Once nerve cells become mature, they don't usually undergo cell
division. Based on your knowledge of the cell cycle, you would predict
that mature nerve cells become arrested in the __________ of the cell
cycle.
Answer: G0 phase
●● The M phase of the cell cycle involves two main processes:
Answer: mitosis and cytokinesis.
●● The mitotic spindle is made of:
Answer: microtubules.
●● A cell is in metaphase if:
Answer: the chromosomes are aligned at the midplane of the cell.
●● During prophase, __________ is(are) compacted into visible
chromosomes.
Answer: chromatin
●● __________ contain identical DNA sequences and are held together
by __________ during mitosis.
, Answer: Sister chromatids; centromeres
●● Duplicated centrioles start moving to opposite poles of a dividing
__________ cell during __________ of the cell cycle.
Answer: animal; prophase
●● Cytokinesis in animal cells involves contraction of a ring of
__________ microfilaments.
Answers:
cyclin plus actin
Answer: actin plus myosin
●● If mitosis produced gametes in sexually reproducing organisms,
then:
Answer: chromosome number would double in each generation
●● Which of the following events does not occur during meiosis I?
Answer: separation of sister chromatids
●● The correct number of chromosomes is maintained during sexual
reproduction by:
Answer: meiosis, which reduces the chromosome number by half.
AND CORRECT ANSWERS
●● During which phase does crossing-over occur?
Answer: prophase-I
●● What is the function of nucleosomes?
Answer: To prevent DNA strands from tangling.
●● Which of the following combinations of letters accurately represents
two sister chromatids?
Answer: A and C
●● During which of the following stages of meiosis do the sister
chromatids separate?
Answer: anaphase II
●● Which of the following combinations of letters accurately represents
two homologous chromatids?
Answer: A and D
●● A maternal homologue and a paternal homologue synapse to form:
,Answer: a tetrad.
●● Once nerve cells become mature, they don't usually undergo cell
division. Based on your knowledge of the cell cycle, you would predict
that mature nerve cells become arrested in the __________ of the cell
cycle.
Answer: G0 phase
●● The M phase of the cell cycle involves two main processes:
Answer: mitosis and cytokinesis.
●● The mitotic spindle is made of:
Answer: microtubules.
●● A cell is in metaphase if:
Answer: the chromosomes are aligned at the midplane of the cell.
●● During prophase, __________ is(are) compacted into visible
chromosomes.
Answer: chromatin
●● __________ contain identical DNA sequences and are held together
by __________ during mitosis.
, Answer: Sister chromatids; centromeres
●● Duplicated centrioles start moving to opposite poles of a dividing
__________ cell during __________ of the cell cycle.
Answer: animal; prophase
●● Cytokinesis in animal cells involves contraction of a ring of
__________ microfilaments.
Answers:
cyclin plus actin
Answer: actin plus myosin
●● If mitosis produced gametes in sexually reproducing organisms,
then:
Answer: chromosome number would double in each generation
●● Which of the following events does not occur during meiosis I?
Answer: separation of sister chromatids
●● The correct number of chromosomes is maintained during sexual
reproduction by:
Answer: meiosis, which reduces the chromosome number by half.
