Cell Cycle

Open Ended

Based on your prior knowledge or the interactive last week, name one thing you know about the cell cycle.

Draw

Based on your prior knowledge or the interactive last week, draw a model you think represents the cell cycle.

​Question: Explain why cells divide.

Poll

Poll: Do you think all cells divide?

• Yes

• No

Why do cells divide rather than get bigger?

Big cells are inefficient!

Genetics Terminology

Multiple Select

Select all of the scenarios where a eukaryotic cell would divide.

• You cut off the tip of your thumb and need to replace the cells.

• A child gets COVID and it damages some lung cells.

• You have an athletic accident and cut a major nerve in your knee.

• A baby is growing and developing into a toddler.

Multiple Choice

What would happen if a cell were to continue growing while never dividing?

• surface area would increase and transport would be faster

• the organism would be giant but otherwise metabolism would be normal

• all cellular processes would slow down

• the cell would have a very large fat deposit in the central vacuole

​Let's Watch First

Match

Match the following stages with the event that occurs there

• G1

• S

• G2

• M

• C

The cell grows and organelles replicate.

The genetic material is replicated.

The cell grows and prepares to divide.

The cell divides the genetic material in half to create identical genetic material in daughter cells

Two cells are created with equal DNA.

• The cell grows and organelles replicate.

• The genetic material is replicated.

• The cell grows and prepares to divide.

• The cell divides the genetic material in half to create identical genetic material in daughter cells

• Two cells are created with equal DNA.

Draw

Draw a cell as it goes through the cell cycle.

Draw

Draw a cell as it goes through the cell cycle paying attention to genetic continuity.

Notice the DNA as it goes through the stages of the cell cycle

Multiple Choice

What is the purpose of mitosis?

• To allow the cell to replicate genetic material and organelles.

• To divide the genetic material into two identical parts for future cells.

• To divide the cytoplasm and organelles into two new daughter cells.

• To allow the cell time to build up energy and grow large enough to divide.

Draw

If the original cell has 2 chromosomes, complete the rest of the cell cycle by drawing in the circles below.

Multiple Choice

Does prokaryotic cell division, binary fission, also maintain genetic continuity?

• Yes--DNA replicates and then divides equally between the two daughter cells

• Yes--The cells grow and divide their cytoplasms equally.

• No--The cells grow and divide their cytoplasm and genetic material unequally.

• No--DNA replicates but does not divide equally between the daughter cells.

Multiple Choice

Mitosis creates...

• two genetically identical daughter cells.

• two genetically different daughter cells.

• four genetically different daughter cells.

• four genetically identical daughter cells.