Question

identify the stage of mitosis each lettered plant cell is in:

1. a
2. b
3. c
4. d
5. e

regulation of the cell cycle

1. a mass of cancerous cells is called a t______.
2. what is the purpose of checkpoints in the cell cycle?
3. what is a carcinogen? ____ give 2 examples of carcinogens: __ and ____
4. cancer is defined as uncontrolled growth and division of cells due to a failure in the regulation of the cell cycle. do cancerous cells spend much of their time in g₀, the resting period of the cell cycle? explain why or why not.

use the word box below to answer questions 42 - 44
apoptosis daughter chromosome chromatin develop divide grow repair

1. programmed cell death is called ______ and is often triggered by cells that are damaged beyond repair. this process can help protect against cancerous growth.

big ideas

1. what are reasons eukaryotic cells divide?

a. to ____ & ____.
b. to ______ tissue.

1. what is the relationship between chromatin and chromosomes?

____ is thread - like dna and is the form usually found in a cell that is not dividing. when a cell is going to divide, chromatin coils up to form a(n) __. condensing and packaging dna this way makes it much more manageable and easier to __ dna evenly among the 2 new identical ____ cells.

Explanation:

33 - 37: Without seeing the cell - specific details, we can't identify the mitosis stage. But generally, mitosis stages are identified by chromosome and nuclear envelope appearance.
38: A mass of cancerous cells is called a tumor.
39: Checkpoints in the cell cycle ensure proper cell division by verifying DNA integrity, growth conditions, and chromosome attachment to the spindle.
40: A carcinogen is a substance, radiation, or virus that can cause cancer. Examples include tobacco smoke and UV radiation.
41: Cancerous cells do not spend much time in G₀. They bypass normal cell - cycle controls and keep dividing instead of entering a resting state.
42: Programmed cell death is called apoptosis.
43: Eukaryotic cells divide to grow and develop (a) and to repair tissue (b).
44: Chromatin is thread - like DNA and is the form usually found in a non - dividing cell. When a cell is going to divide, chromatin coils up to form a chromosome. Condensing and packaging DNA this way makes it easier to divide DNA evenly among the 2 new identical daughter cells.

Answer:

1. Cannot be determined without more cell - specific details
2. Cannot be determined without more cell - specific details
3. Cannot be determined without more cell - specific details
4. Cannot be determined without more cell - specific details
5. Cannot be determined without more cell - specific details
6. tumor
7. To ensure proper cell division by verifying DNA integrity, growth conditions, and chromosome attachment to the spindle
8. A substance, radiation, or virus that can cause cancer; tobacco smoke; UV radiation
9. No. Cancerous cells bypass normal cell - cycle controls and keep dividing instead of entering a resting state.
10. apoptosis
11. a. Grow; Develop

b. Repair

1. Chromatin; chromosome; divide; daughter