Unit 6 - Cell Cycle, Mitosis, and Cancer

Question 1

What phase is the longest?

Answer 1

interphase

Question 2

What phase consists of G1, S, and G2?

Answer 2

interphase

Question 3

What is the division of the cytoplasm resulting in two identical daughter cells?

Answer 3

cytokinesis

Question 4

What does the G in G1 and G2 stand for?

Answer 4

growth

Question 5

What are the steps in the Cell Cycle in order?

Answer 5

G1, S, G2, Mitosis

Question 6

What phase of interphase makes proteins needed for replication of DNA?

Answer 6

G1

Question 7

What occurs during the S phase?

Answer 7

DNA is replicated or synthesizes. Result is two identical strands of DNA.

Question 8

What phase of interphase is when the cell gets ready to undergo mitosis?

Answer 8

G2

Question 9

What is chromatin?

Answer 9

uncondensed DNA

Question 10

What phase? Chromatin condenses to become chromosomes, nuclear envelope breaks down, and centrioles migrate to opposite poles in animal cells.

Answer 10

Prophase

Question 11

What are the phases of mitosis in order?

Answer 11

PMAT - prophase, metaphase, anaphase, telophase

Question 12

What phase? Sister chromatids line up along the metaphase plate in the middle. Spindle apparatus attaches at the centromere of the chromosomes.

Answer 12

Metaphase

Question 13

What phase? Sister chromatids separate and move to opposite sides of the cell. The spindle apparatus pulls them apart. This phase ends when the chromatids stop moving.

Answer 13

Anaphase

Question 14

What phase? Two nuclear enveloped begin reforming. Chromatids relax, uncoil and are now chromatin. Cytokinesis is occurring during this phase but is not considered a part of mitosis because it does not involve the nucleus of the cell. In plant cells, a cell plate begins to form while a cleavage furrow is visible in animal cells.

Answer 14

Telephase

Question 15

What is division of a cell’s nucleus?

Answer 15

mitosis

Question 16

Interphase or mitosis? Cell growth occurs

Answer 16

interphase

Question 17

Interphase or mitosis? Nuclear division occurs

Answer 17

mitosis

Question 18

Interphase or mitosis? Chromosomes are finishing moving into separate daughter cells

Answer 18

mitosis

Question 19

Interphase or mitosis? Chromosomes form (DNA/chromatin fully condenses)

Answer 19

mitosis

Question 20

Interphase or mitosis? DNA synthesis occurs

Answer 20

interphase

Question 21

Interphase or mitosis? Where cells spend most of their life

Answer 21

interphase

Question 22

Interphase or mitosis? Mitochondria and other organelles are made

Answer 22

interphase

Question 23

Chromosomes move to the middle of the cell during what phase?

Answer 23

metaphase

Question 24

What phase do the sister chromatids separate?

Answer 24

anaphase

Question 25

During which phase do chromosomes first become visible?

Answer 25

prophase

Question 26

During which phase does the cleavage furrow start forming on animal cells?

Answer 26

cytokinesis

Question 27

a mass of cancerous cells is called a…

Answer 27

tumor

Question 28

What is the purpose of checkpoints in the cells cycle? (3)

Answer 28

1. To ensure that DNA is replaced correctly
2. To ensure that cells are matured before going to the next phase
3. To avoid mutations and errors

Question 29

What is carcinogen?

Answer 29

cancer causing agents that can disrupt the cell cycle

Question 30

2 examples of carcinogens:

Answer 30

alcohol and tobacco

Question 31

Why do eukaryotic cells divide? (2)

Answer 31

1. To grow and develop
2. To repair damaged tissue

Question 32

What are the 4 R’s?

Answer 32

1. repair
2. replace
3. reproduce
4. resize

Question 33

What is thread-like DNA and is the form usually found in a cell that is not dividing?

Answer 33

chromatin

Question 34

When a cell is going to divide, chromatic coils up to form a…

Answer 34

chromosome