Cell Size and The Cell Cycle

As you grow from a toddler to a teenager, you increase in size. This is because:

• Your cells stretch to become bigger.

• The space between your cells expands.

• Your cells replicate and increase in number.

• The world around you shrinks.

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At the end of the cell cycle, there are:

• Two genetically identical daughter cells.

• One bigger cell.

• One big cell and one small cell.

• Two genetically different daughter cells.

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The correct order of phases in the cell cycle is:

• Cytokinesis, mitosis, interphase

• Interphase, cytokinesis, mitosis.

• Interphase, mitosis, cytokinesis.

• Mitosis, interphase, cytokinesis.

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Why do cells replicate? (Choose all that apply)

• Growth of an organism

• Replace old cells

• Repair damaged cells

• To make a new organism

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Why are cells so darn small?

• So they can fit into tiny spaces.

• Because diffusion is more efficient across small distances.

• Because they're so cute when they're small!

• Because diffusion is more efficient across big spaces.

What happens during the G₁ phase of interphase?

• The cell's DNA duplicates (copies).

• The cell grows in size and duplicates its organelles.

• The cell checks for DNA mutations and prepares for mitosis.

• The cell clones separate.

What happens during the G₂ phase of interphase?

• The cell's DNA duplicates (copies).

• The cell grows in size and duplicates its organelles.

• The cell checks for DNA mutations and prepares for mitosis.

• The cell clones separate.

What happens during the S phase of interphase?

• The cell's DNA duplicates (copies).

• The cell grows in size and duplicates its organelles.

• The cell checks for DNA mutations and prepares for mitosis.

• The cell clones separate.

What happens during cytokinesis?

• The cell's DNA duplicates (copies).

• The cell grows in size and duplicates its organelles.

• The cell checks for DNA mutations and prepares for mitosis.

• The cell clones separate.

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An organism has 23 chromosomes in each of its somatic (body cells). At the end of mitosis, each daughter cells will have exactly:

• 46 chromosomes

• 11.5 chromosomes

• 23 chromosomes

• 2.3 chromosomes

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