Chapter 10 Quest

Question 0

What is cell division?

Answer 0

the process by which a cell divides into two new daughter cells

Question 1

What are two reasons why cells divide rather than continue to grow indefinitely?

Answer 1

the larger a cell becomes, the more demands the cell places on its DNA
the ore trouble the cell has moving enough nutrients and wastes across the cell membrane

Question 2

how does cel division solve the problem of increasing size?

Answer 2

each daughter cell gets one complete set of genetic info

Question 3

What are the two main stages of cell division?

Answer 3

mitosis, cytokinesis

Question 4

When chromosomes become visible at the beginning of cell division, what does each chromosome consist of?

Answer 4

Chromatids and centromeres

Question 5

Each pair of chromatids is attached at an area called the

Answer 5

centromere

Question 6

What is the period of growth in between cell divisions called?

Answer 6

interphase

Question 7

What is the cell cycle?

Answer 7

the series of events that cells go through as they grow and divide

Question 8

The division of the cell nucleus during the M phase of the cell cycle is called

Answer 8

mitosis

Question 9

Interphase is divided into what three phases

Answer 9

prophase
metaphase
anaphase

Question 10

What happens during the G1 phase?

Answer 10

cell growth

Question 11

What happens during the S phase?

Answer 11

DNA replication

Question 12

What happens during the G2 phase?

Answer 12

preparation for mitosis

Question 13

What are the four phases of mitosis?

Answer 13

prophase
metaphase
anaphase
telophase

Question 14

What are the two tiny structures located in the cytoplasm near the nuclear envelope at the beginning of prophase?

Answer 14

centrioles, spindle

Question 15

What is the spindle?

Answer 15

Where the centrioles are located

Question 16

What is cytokinesis?

Answer 16

the division of the cytoplasm

Question 17

How does cytokkinesis occur in most animal cells?

Answer 17

the cell membrane is drawn inward until the cytoplasm is pinched into equal parts

Question 18

What forms midway between the divided nucleus during cytokinesis in plant cells?

Answer 18

cell wall

Question 19

What happens to the cells at the edges of an injury when a cut in the skin or a break in a bone occurs?

Answer 19

they divide rapidly

Question 20

What happens to the rapidly dividing cells when the healing process nears completion

Answer 20

slows down

Question 21

What do cyclins regulate?

Answer 21

the timing of the cell cycle in eukaryotic cells

Question 22

What are internal regulators

Answer 22

proteins that respond to events inside the cell

Question 23

What is cancer?

Answer 23

a disorder in which some of the body’s own cells lose the ability to control growth