1 Cell Division and Replication Flashcards

1
Q

Undifferentiated cells able to divide and replace cells when required are known as:

A

Stem cells

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2
Q

Cells which do not normally divide but can perform mitosis should the need arise are known as:

A

Facultative dividers

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3
Q

Embryonic stem cells are:

Totipotent

or

Multipotent

A

Totipotent

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4
Q

________

Prometaphase

Metaphase

Anaphase

Telophase

A

Prophase

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5
Q

Prophase

___________

Metaphase

Anaphase

Telophase

A

Prometaphase

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6
Q

Prophase

Prometaphase

_________

Anaphase

Telophase

A

Metaphase

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7
Q

Prophase

Prometaphase

Metaphase

________

Telophase

A

Anaphase

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8
Q

Prophase

Prometaphase

Metaphase

Anaphase

_________

A

Telophase

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9
Q

Kinetochores control the entry of a cell into anaphase at the equatorial plate - what is this called?

A

Metaphase checkpoint

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10
Q

The sorting, paring and comparison of chromosomes is known as what?

A

Karyotyping

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11
Q

A patient is found to display a Trisomy 21 Karyotype, what does this mean?

A

Three copies of chromosome 21

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12
Q

Most of the lifecycle of a cell is spent in a non-dividing phase - what is it called?

A

Interphase

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13
Q

DNA replication occurs prior to or during mitosis?

A

prior to

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14
Q

the S Phase, where DNA is replicated, occurs before or after the G2 phase?

A

Before

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15
Q

What is the phase of the cell cycle between G1 and G2?

A

S Phase

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16
Q

Terminally differentiated cells and facultative dividers both enter what phase after mitosis?

A

G0 Phase

17
Q

What does the metaphase checkpoint prevent?

A

Progression to anaphase before the chromosomes are properly lined up

18
Q

What are the two phases of somatic cell division?

A

S Phase (synthesis)

Mitotic Phase

19
Q

during S phase, two chromosomes affixed at the centromere are known as:

A

Sister Chromatids

20
Q

the 22 homologous pairs of chromosomes are known as:

A

Autosomes

21
Q

What is the human diploid number?

A

46

22
Q

Do gamete cells contain the diploid or haploid number of chromosomes?

A

Haploid

23
Q

How many gametes are formed by meiosis in females?

A

1

24
Q

How many gametes are formed by meiosis in males?

A

4

25
Q

Does meiosis result in an increase or a reduction in genetic material

A

Reduction

26
Q

Two different copies of the same chromosome are known as what?

A

Homologous chromosomes

27
Q

At what point during meiosis does the crossing over of the chromosomes occur?

A

Prophase I

28
Q
A