Unit 3 Cell cycle review

The diagram below shows the occurrence of three checkpoints in the cell cycle. At each checkpoint, the cell determines whether conditions are favorable for cell division to continue. If the conditions are not favorable, a protein called p53 stops the cell cycle and causes the cell to die.Which statement describes what would most likely happen if p53 mutated and could not perform its task?

• The cell would divide without control and lead to the formation of cancer.

• The cell would regain control of the cell cycle by using a type of lipid instead of p53

• The cell would divide without control and produce new cells that make p53 without the mutation

• the cell would regain control of the cell cycle by adding an additional checkpoint.

Tags

NGSS.HS-LS1-4

Match the following phases of the cell cycle to the diagram

• Mitosis

• D

• Synthesis phase

• C

• Growth phase 2

• A

• Growth Phase 1

• B

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NGSS.HS-LS1-4

What phase in the cell cycle does DNA replication happen?

• G1

• S

• G2

• M

​Which of the following activities occurs in the G1 phase?

• growth of the cell

• replication of DNA

• formation of the mitotic spindle

• breakdown of the nuclear membrane

What is the end result of the cell cycle?

• 2 identical cells

• 1 identical cell

• 2 different cells

• one cell that is unchanged

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NGSS.HS-LS1-4

Match the phase of the cell cycle with the correct description

• Prophase

• During this phase DNA begins to organize and condense to chromososomes

• Anaphase

• During this phase cells seperate their cytoplasm

• Synthesis Phase

• During this phase cells replicate their DNA

• Cytokinesis

• During this phase chromatids are pulled toward opposite ends

• Growth phase 2

• During this phase cells duplicate their organelles

Tags

NGSS.HS-LS1-4

Which phase of the cell cycle does the white arrow represent?

(The white arrow includes the yellow, blue, and red sections)

• Prophase

• Interphase

• Mitosis

• Cytokinesis

Tags

NGSS.HS-LS1-4

What is the other name for the cell division phase?

*This is the purple/pink phases on the left side of the cycle.

• Prophase

• Interphase

• Mitosis

• Cytokinesis

Tags

NGSS.HS-LS1-4

DNA Structure

Chargaff

Enabling a highlightable text passage that can be used across multiple items.
Around this same time, Austrian biochemist Erwin Chargaff examined the content of DNA in different species and found that the amounts of adenine, thymine, guanine, and cytosine were not found in equal quantities, and that it varied from species to species, but not between individuals of the same species. He found that the amount of adenine equals the amount of thymine, and the amount of cytosine equals the amount of guanine, or A = T and G = C. This is also known as Chargaff’s rules. This finding proved immensely useful when Watson and Crick were getting ready to propose their DNA double helix model.

The sides of the ladder (backbone) are made of?

• deoxyribose and thymine

• cytosine and phosphate

• deoxyribose and phosphate

• phosphate and adenine

DNA Structure

Chargaff

Enabling a highlightable text passage that can be used across multiple items.
Around this same time, Austrian biochemist Erwin Chargaff examined the content of DNA in different species and found that the amounts of adenine, thymine, guanine, and cytosine were not found in equal quantities, and that it varied from species to species, but not between individuals of the same species. He found that the amount of adenine equals the amount of thymine, and the amount of cytosine equals the amount of guanine, or A = T and G = C. This is also known as Chargaff’s rules. This finding proved immensely useful when Watson and Crick were getting ready to propose their DNA double helix model.

The middle (rungs) of the ladder are made of---------------------------

• deoxyribose

• cytosine

• Nitrogenous Bases

• phosphate