Mitosis Flashcards

0
Q

What are other cells that rarely or never divide?

A

Brain cell, spinal cord cell, cardiac cell

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1
Q

What are examples of cells that are constantly dividing?

A

Cells in the embryo, skin cells,gut lining cells, etc.

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2
Q

A body cell; a cell whose genes will not be passed on to future generations (Ex. Skin cell)

A

Somatic cell

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3
Q

A cell that is destined to becomes a gamete (egg or sperm); a cell whose genes can be passed on to future generations

A

Sex or germ cell

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4
Q

A cell with 2 sets of chromosomes in each of its cells; all body (somatic) cells

A

Diploid (2N)

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5
Q

A cell with 1 set of chromosomes in each of its cells; all gametes (sperm, eggs)

A

Haploid (N)

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6
Q

Division of somatic cells

A

Mitosis

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7
Q

Creation of new sex cells

A

Meiosis

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8
Q

What does a typical cell go through during the cell cycle?

A

Growth, development, and reproduction

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9
Q

What is the longest phase in the cell cycle?

A

Interphase

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10
Q

What’re the 3 stages of interphase?

A

G1, S, G2

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11
Q

What happens during stage G1?

A

The cell grows and performs its normal function

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12
Q

What is the S phase?

A

“Synthesis”; when DNA is replicated

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13
Q

What happens during G2?

A

DNA replication is checked and the cell is getting ready to divide.

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14
Q

What happens during mitosis?

A

The nucleus of the cell divides, forming two nuclei with identical genetic information

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15
Q

What are the stages of mitosis?

A

Prophase, metaphase, anaphase, telophase

16
Q

What happens during prophase?

A
  • chromosomes condense
  • nuclear envelope disappears
  • centrioles migrate to opposite poles of the cell
  • spindle fibers form
17
Q

What happens during metaphase?

A
  • chromosomes line up in the middle of the cell
  • the centrioles are at the opposite ends
  • spindle fibers attach to centromeres
18
Q

What happens during anaphase?

A
  • sister chromatids pull apart
  • 2 sister chromatids -> 2 separate chromosomes
  • spindle fibers contract
  • chromosomes are pulled to opposite sides of the cell
19
Q

What happens during telophase?

A
  • Cell begins to split
  • chromosomes are at the poles of the cell
  • Nuclear envelope reforms around the two sets of chromosomes
20
Q

What happens during cytokinesis?

A
  • Division of cytoplasm
    ~ animal: cleavage furrow; centriole present
    ~ plant: cell plate; centriole not present