Exam 5: Cell Division

A) prophase
B) anaphase I
C) anaphase II
D) metaphase I
E) metaphase II

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A) a growth factor receptor
B) a DNA repair protein
C) a protein involved with the G1 checkpoint
D) a caspase
E) a DNA replication protein

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A) It occurs in the ovary.
B) The egg will contain 23 chromosomes.
C) Four equal size daughter cells will form.
D) Three nonfunctional polar bodies will form.
E) Once started, it will not necessarily go to completion.

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A) Histones play a role in coding for hereditary features.
B) Histones make RNA synthesis possible.
C) Histones determine the structure of the chromosome.
D) Histones are not thought to play any role in the cell.
E) Histones determine the diploid number of chromosomes.

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A) tumor suppressor genes
B) initator caspase genes
C) proto-oncogenes
D) DNA repair protein genes
E) executioner caspase genes

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A) cell rounds up
B) cells lose contact with neighbors
C) nucleus fragments
D) DNA is duplicated
E) plasma membrane develops blisters

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A) mitosis and interphase.
B) meiosis and interphase.
C) prophase and interphase.
D) metaphase and interphase.
E) changes from a haploid to a diploid state.

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A) interphase
B) prophase
C) metaphase
D) anaphase
E) telophase

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A) M phase
B) S phase
C) G1 phase
D) G2 phase
E) cytokinesis

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Interphase - prophas...

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A) DNA synthesis and DNA degradation.
B) mitosis and cytokinesis.
C) duplication and division.
D) cell growth and cell death.
E) meiosis and mitosis.

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A) each chromosome composed of two sister chromatids at both
B) homologous chromosomes at both
C) each chromosome composed of two sister chromatids for meiosis, each chromosome composed of one sister chromatid for mitosis
D) homologous chromosomes for meiosis, each chromosome composed of two sister chromatids for mitosis
E) each chromosome composed of two sister chromatids for meiosis, homologous chromosomes for mitosis

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A) Anaphase I
B) Anaphase II
C) Prophase
D) Anaphase
E) Metaphase I

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A) spermatogenesis results in three times more cells.
B) spermatogenesis produces polar bodies in an effort to keep nutrients for the one sperm cell.
C) oogenesis stops at the second meiotic division and awaits fertilization by a sperm before finishing meiosis.
D) spermatogenesis results after fertilization.
E) oogensis produces 2 eggs and spermatogenesis produces 4 sperms.

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A) No. Crossing-over is not observable.
B) No. Sister chromatids are not present within the same nucleus.
C) No. Since they are genetically identical you could not tell the difference without labeling the chromatids.
D) Yes. Sister chromatids look different from each other.
E) Yes. One sister chromatid comes from mother and one comes from father.

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A) Crossing over recombines portions of sister chromatids.
B) Fertilization provides a new pairing of chromosomes.
C) Each sperm or egg has a random assortment of chromosomes, half from each pair.
D) Chromosomes align themselves independently during meiosis I.
E) Since though they are produced at different times, all sperm will be genetically different from all other sperm.

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