Cellular Reproduction

Question 1

What are the phases of the cell cycle?

Answer 1

Interphase, Mitotic phase, and Cytokinesis

Question 2

What are the three phases of the interphase?

Answer 2

G1 phase, S phase, and the G2 phase

Question 3

What happens during the G1 phase?

Answer 3

The cell grows and normal cellular functions occur

Question 4

What happens during the S phase?

Answer 4

DNA replication happens

Question 5

What happens during the G2 phase?

Answer 5

Cell grows and prepares for division

Question 6

What are the 5 phases of the Mitotic phase?

Answer 6

Prophase, Prometaphase, Metaphase, Metaphase, Anaphase, Telophase.

Question 7

What happens during the Prophase?

Answer 7

The replicated DNA condenses and becomes visible with a light microscope; the centrioles start to produce spindle fibers and move to the opposite ends (the poles) of the cell

Question 8

What happens during the Prometaphase?

Answer 8

The nuclear envelope breaks down; spindle fibers attach to doubled chromosomes at the centromeres.

Question 9

What happens during the Metaphase?

Answer 9

The spindle fibers move the chromosomes to line up, single file, down the centre (the equator) of the cell.

Question 10

What happens during the Anaphase?

Answer 10

The spindle fibers are pulled back towards the centrioles; the centromeres are torn and the sister chromatids are separated; the chromosomes are pulled towards the opposite poles of the cell.

Question 11

What happens during the Telophase?

Answer 11

The two groups of chromosomes reach the poles of the cell; a nuclear envelope starts to form around each group; the spindle breaks down; and the chromosomes start to unwind.

Question 12

What happens during cytokinesis?

Answer 12

It is the process of dividing the cytoplasm.

Question 13

What are the phases of meiosis?

Answer 13

Prophase I and II, Metaphase I and II, Anaphase I and II, Telophase I and II, and cytokinesis

Question 14

What happens during Prophase I

Answer 14

The replicated DNA condenses; the centrioles start to produce spindle fibers and move to the opposite ends of the cell; the nuclear envelope breaks down; spindle fibers attach to condensed doubled chromosomes at the centromeres; homologs pair up.

Question 15

What happens during Metaphase I

Answer 15

The spindle fibers move the chromosomes to line up in homologous pairs, down the equator of the cell.

Question 16

What happens during Anaphase I

Answer 16

The spindle fibers are pulled back towards the centrioles; the homologous pairs are separated; the doubled homologs are pulled towards the opposite poles of the cell; sister chromatids remain together.

Question 17

What happens during Telophase I and Cytokinesis

Answer 17

Often occur at the same time; a cleavage furrow or cell plate forms and separates the cytoplasm into two separate cells; in some species a temporary nuclear envelop forms around the two groups of chromosomes.

Question 18

What are the phases of Meiosis II? (Similar to Mitosis btw)

Answer 18

Prophase II, Metaphase II, Anaphase II, Telophase II and cytokinesis again

Question 19

What happens during Prophase II?

Answer 19

The spindle reforms and attaches to the centromeres of the condensed double chromosomes.

Question 20

What happens during Metaphase II?

Answer 20

the spindle fibers move the chromosomes to line up, single file, down the equator of the cell.

Question 21

What happens during Anaphase II?

Answer 21

the spindle fibers are pulled back towards the centrioles; the sister chromatids are separated; the chromosomes are pulled towards the opposite poles of the cell.

Question 22

What happens during Telophase II, and cytokinesis?

Answer 22

The groups of chromosomes reach the poles of the cell; a nuclear envelope starts to form around each group; the spindle breaks down; the chromosomes start to unwind; and a cleavage furrow or cell plate forms to separate the cytoplasm into separate cells.