Cells generally have reasons to divide.

Check ALL of the reasons that are true.

• To repair damaged tissues

• To replace old or damaged cells

• To grow the body larger

• To create new DNA

Tags

NGSS.MS-LS1-3

NGSS.MS-LS1-5

In mitosis, the two resulting cells are

• different from the starting cell and identical to each other.
• different from the starting cell and different from each other.
• identical to the starting cell and different from each other.
• identical to the starting cell and identical to each other.

Why would it be important to replicate DNA and store energy BEFORE a cell divides in mitosis?

• A cell in mitosis is no longer doing its normal job, and needs everything to be ready

• That is the only way for the cell to be able to increase in size.

• So that the DNA to be contained and stored in the nucleus.

• So the cell can scramble up the different Chromosomes for a new mix

What are the loose string like things in the drawing?

• Centrioles

• Chromosomes

• Nucleus

• Uncoiled loose DNA

Why must a cell copy all of its DNA and make sure each new cell gets exactly one copy?

• It isn't, DNA helps the cell organize but a few mistakes aren't a problem

• Because DNA is the cell's instruction book, it can't do anything without it

• It isn't, having too much DNA just means there is extra in case something breaks

Tags

NGSS.MS-LS3-1

NGSS.MS-LS3-2

DNA is replicated during which part of the cell cycle?

• Interphase

• Mitosis

• Cytokinesis

What would happen if a parent cell didn't make enough organelles, such as a mitochondria (which makes energy), to split between it's new daughter cells?

• Nothing, they would be just fine

• They would be very weak and have a hard time doing things

• They would die because they wouldn't be able to get food or do their jobs

• They would mutate and turn into a cancer cell

Tags

NGSS.HS-LS1-4

What are the "X" shaped things in the drawing.

• Centrioles

• Chromosomes

• Nucleus

• Uncoiled loose DNA

Tags

NGSS.MS-LS3-1

In which phase does the cell spend most of it's life?

• Interphase
• Nuclear Division
• Telophase
• Mitosis

Label each of the different parts of the cell cycle

d

e

f

c

b

a

S - DNA Copying

G2 - Growing

Cytokinesis

Interphase

G1 - Growing

Mitosis

Tags

NGSS.HS-LS1-4