Cell Cycle Honors

What are sister chromatids?

• Duplicated chromosomes attached at the centromere (center)

• uncoiled/uncondensed DNA

• division of cytoplasm

• one division to create 2 identical cells

Tags

NGSS.HS-LS1-4

What is cytokinesis?

• duplicated chromosomes attached at the centromere

• uncoiled/uncondensed DNA

• keeps sister chromatids together

• division of cytoplasm

Tags

NGSS.HS-LS1-4

What is the function of spindle fibers?

• Replicates DNA

• Helps separate chromosomes evenly for the daughter cells

• Increases the growth of the cell

• Divides the cytoplasm

Tags

NGSS.HS-LS1-4

What happens during cell division?

• mitosis and cytokinesis

• preparation for mitosis

• DNA replication

• help separate chromosomes evenly for daughter cells

Tags

NGSS.HS-LS1-4

During mitosis, how is genetic material put into each daughter cell?

• The chromosomes split evenly between daughter cells

• The chromosomes are duplicated before cell division

• The chromosomes stay in the original cell

• The chromosomes are randomly distributed

Tags

NGSS.HS-LS1-4

The total number of chromosomes in a human cell is 46. How many chromosomes will be in each cell after mitosis?

• 23

• 46

• 92

• Varies

Tags

NGSS.HS-LS1-4

What is the correct order of the cell cycle?

• G2, G1, M, S

• G1, S, G2,M

• S, G1, G2, M

• G1, M, G2, S

What prevents normal cells from dividing?

• growth factors

• tissue damage

• contact inhibition when cells touch each other

• cyclins

Tags

NGSS.HS-LS1-4

What is true about cyclins?

• signal the cell to stop the cell cycle if DNA mutations are present

• is an inhibitory protein causing the cycle to stop

• is a stimulating protein causing the cycle to proceed

• if not functional, can lead to cancer cells dividing uncontrollably

Tags

NGSS.HS-LS1-4

What does the G1 checkpoint check for?

• DNA damage

• chromosome spindle attachement

• if DNA is replicated correctly

• if cells divide correctly