CCBC BIO 110 final exam actual questions
and answers 100% correct
Why is only one strand of DNA transcribed into mRNA? - -Because
the other strand would produce the same amino acid sequence in
reverse order
-During which phase does crossing-over occur? - -prophase-I
-What is the function of nucleosomes? - -To prevent DNA strands
from tangling.
-Which of the following combinations of letters accurately
represents two sister chromatids? - -A and C
-During which of the following stages of meiosis do the sister
chromatids separate? - -anaphase II
-Which of the following combinations of letters accurately
represents two homologous chromatids? - -A and D
-A maternal homologue and a paternal homologue synapse to
form: - -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. - -G0 phase
-The M phase of the cell cycle involves two main processes: - -
mitosis and cytokinesis.
-The mitotic spindle is made of: - -microtubules.
-A cell is in metaphase if: - -the chromosomes are aligned at the
midplane of the cell.
-During prophase, __________ is(are) compacted into visible
chromosomes. - -chromatin
, -__________ contain identical DNA sequences and are held
together by __________ during mitosis. - -Sister chromatids;
centromeres
-Duplicated centrioles start moving to opposite poles of a dividing
__________ cell during __________ of the cell cycle. - -animal;
prophase
-Cytokinesis in animal cells involves contraction of a ring of
__________ microfilaments.
Answers:
cyclin plus actin - -actin plus myosin
-If mitosis produced gametes in sexually reproducing organisms,
then: - -chromosome number would double in each generation
-Which of the following events does not occur during meiosis I? - -
separation of sister chromatids
-The correct number of chromosomes is maintained during
sexual reproduction by: - -meiosis, which reduces the
chromosome number by half.
-An animal with a diploid number of 36 chromosomes will have
__________ chromosomes in its gametes and __________
chromosomes in its somatic cells. - -18;36
-DNA is duplicated during __________ of the cell cycle. - -S phase
-Which of the following represents the overall sequence of events
during mitosis? - -prophase − metaphase − anaphase −
telophase
-Nucleosomes are best described as: - -eukaryotic DNA
associated with histone proteins.
-Cytokinesis in plant cells begins with the formation of a(n): - -cell
plate
and answers 100% correct
Why is only one strand of DNA transcribed into mRNA? - -Because
the other strand would produce the same amino acid sequence in
reverse order
-During which phase does crossing-over occur? - -prophase-I
-What is the function of nucleosomes? - -To prevent DNA strands
from tangling.
-Which of the following combinations of letters accurately
represents two sister chromatids? - -A and C
-During which of the following stages of meiosis do the sister
chromatids separate? - -anaphase II
-Which of the following combinations of letters accurately
represents two homologous chromatids? - -A and D
-A maternal homologue and a paternal homologue synapse to
form: - -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. - -G0 phase
-The M phase of the cell cycle involves two main processes: - -
mitosis and cytokinesis.
-The mitotic spindle is made of: - -microtubules.
-A cell is in metaphase if: - -the chromosomes are aligned at the
midplane of the cell.
-During prophase, __________ is(are) compacted into visible
chromosomes. - -chromatin
, -__________ contain identical DNA sequences and are held
together by __________ during mitosis. - -Sister chromatids;
centromeres
-Duplicated centrioles start moving to opposite poles of a dividing
__________ cell during __________ of the cell cycle. - -animal;
prophase
-Cytokinesis in animal cells involves contraction of a ring of
__________ microfilaments.
Answers:
cyclin plus actin - -actin plus myosin
-If mitosis produced gametes in sexually reproducing organisms,
then: - -chromosome number would double in each generation
-Which of the following events does not occur during meiosis I? - -
separation of sister chromatids
-The correct number of chromosomes is maintained during
sexual reproduction by: - -meiosis, which reduces the
chromosome number by half.
-An animal with a diploid number of 36 chromosomes will have
__________ chromosomes in its gametes and __________
chromosomes in its somatic cells. - -18;36
-DNA is duplicated during __________ of the cell cycle. - -S phase
-Which of the following represents the overall sequence of events
during mitosis? - -prophase − metaphase − anaphase −
telophase
-Nucleosomes are best described as: - -eukaryotic DNA
associated with histone proteins.
-Cytokinesis in plant cells begins with the formation of a(n): - -cell
plate
