Biology Ch 2: Reproduction

Question 1

What is the order of phases of the cell cycle?

Answer 1

G1 –> S –> G2 –> M

Question 2

G1, S, and G2 phases are collectively known as?

Answer 2

Interphase

Question 3

What occurs during G1?

Answer 3

Replication of organelles

Increase in size

Question 4

What occurs during S phase?

Answer 4

Replication of genetic material, creating sister chromatids

Question 5

What occurs during G2?

Answer 5

DNA quality control checkpoint

Question 6

What occurs during M phase?

Answer 6

Mitosis and cytokinesis

Question 7

What is the order of stages of mitosis?

Answer 7

Prophase –> Metaphase –> Anaphase –> Telophase

Question 8

What occurs during prophase?

Answer 8

Condensation of chromatin into chromosomes

Question 9

What occurs during metaphase?

Answer 9

Chromosomes line up along the metaphase plate

Question 10

What occurs during anaphase?

Answer 10

Centromeres split so that each chromatid has its own centromere

Question 11

What occurs during telophase?

Answer 11

*Reverse of prophase

Spindle apparatus disappears

Nuclear membrane reforms around each set of chromosomes

Nucleoli reappear

Question 12

What occurs during cytokinesis?

Answer 12

Separation of the cytoplasm and organelles, giving rise to two daughter cells

Question 13

How many times can a given human somatic cell divide before programmed cell death?

Answer 13

20-50

Question 14

What is the correct sequence of the development of a mature sperm cell

Answer 14

Spermatogonia –> primary spermatocyte –> secondary spermatocyte –> spermatid –> mature spermatozoa