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CCBC BIO 110 final UPDATED Actual Questions and CORRECT Answers

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CCBC BIO 110 final UPDATED Actual Questions and CORRECT Answers Why is only one strand of DNA transcribed into mRNA? - CORRECT ANSWER- Because the other strand would produce the same amino acid sequence in reverse order During which phase does crossing-over occur? - CORRECT ANSWER- prophase-I ...

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  • September 22, 2024
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  • CCBC BIO 110
  • CCBC BIO 110
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CCBC BIO 110 final UPDATED Actual
Questions and CORRECT Answers
Why is only one strand of DNA transcribed into mRNA? - CORRECT ANSWER-
✔✔Because the other strand would produce the same amino acid sequence in reverse order



During which phase does crossing-over occur? - CORRECT ANSWER- ✔✔prophase-I



What is the function of nucleosomes? - CORRECT ANSWER- ✔✔To prevent DNA strands
from tangling.


Which of the following combinations of letters accurately represents two sister chromatids? -
CORRECT ANSWER- ✔✔A and C


During which of the following stages of meiosis do the sister chromatids separate? -
CORRECT ANSWER- ✔✔anaphase II


Which of the following combinations of letters accurately represents two homologous
chromatids? - CORRECT ANSWER- ✔✔A and D


A maternal homologue and a paternal homologue synapse to form: - CORRECT 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. - CORRECT ANSWER- ✔✔G0 phase


The M phase of the cell cycle involves two main processes: - CORRECT ANSWER-
✔✔mitosis and cytokinesis.



The mitotic spindle is made of: - CORRECT ANSWER- ✔✔microtubules.

, A cell is in metaphase if: - CORRECT ANSWER- ✔✔the chromosomes are aligned at the
midplane of the cell.


During prophase, __________ is(are) compacted into visible chromosomes. - CORRECT
ANSWER- ✔✔chromatin


__________ contain identical DNA sequences and are held together by __________ during
mitosis. - CORRECT ANSWER- ✔✔Sister chromatids; centromeres


Duplicated centrioles start moving to opposite poles of a dividing __________ cell during
__________ of the cell cycle. - CORRECT ANSWER- ✔✔animal; prophase


Cytokinesis in animal cells involves contraction of a ring of __________ microfilaments.
Answers:

cyclin plus actin - CORRECT ANSWER- ✔✔actin plus myosin


If mitosis produced gametes in sexually reproducing organisms, then: - CORRECT
ANSWER- ✔✔chromosome number would double in each generation


Which of the following events does not occur during meiosis I? - CORRECT ANSWER-
✔✔separation of sister chromatids


The correct number of chromosomes is maintained during sexual reproduction by: -
CORRECT ANSWER- ✔✔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. - CORRECT ANSWER-
✔✔18;36



DNA is duplicated during __________ of the cell cycle. - CORRECT ANSWER- ✔✔S phase


Which of the following represents the overall sequence of events during mitosis? -
CORRECT ANSWER- ✔✔prophase − metaphase − anaphase − telophase

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