CELL CYCLE QUIZ | EXAMIANS

Which of the following from a blood clot stimulates the growth of cells in the healing process?

EGF

MPF

PDGF

NGF

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At the center of the cell cycle control system is Cdk, a protein that

manufactures growth factors

is only active during mitosis

is phosphorylated to become active

binds to different cyclins

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How many chromatids are there in a duplicated chromosome?

Two

Three

One

Four

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The cell cycle is controlled in most cells by

cell size (when the cell reaches a certain size, it divides)

a series of checkpoints

different cells exhibit different control strategies

time (after a certain length of time the cell divides)

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Which phase of mitosis is associated with chromosomes aligned at the center of the cell and centromeres divide?

prophase

metaphase

anaphase

interphase

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Cdks bind with __________ , enabling the Cdks to function as enzymes.

cyclins

p53

MPF

histones

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The event(s) which does not occur during interphase, is/are

Organelles replication

DNA replication

Chromatin condenses

Protein Synthesis

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Which of the following is not a part of a human chromosome in any phase?

Centromere

Histone

Nucleosome

Centriole

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Which of the following statements about mitosis is incorrect?

Chromosomes separate during anaphase when the kinetochore microtubules shorten as they depolymerize

The daughter nuclei are genetically identical to the parent nucleus

Chromosomes separate during anaphase due to the interaction of polar microtubules from opposite poles pushing against each other

Chromosomes move to the metaphase plate using motor proteins, a kind of kinesin, attached to spindle fibers

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In which phase, each chromosome replicates to produce two sister chromatids?

Prophase

Anaphase

Metaphase

Interphase

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