HL Cell Biology Cancer and Adaptations to Cells Review Questions

A disorder in which some of the body's cells lose the ability to control growth.

• growth factor

• human growth hormone

• cancer

• tumor

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NGSS.HS-LS1-4

NGSS.HS-LS3-2

Cyclin is a family of proteins that regulates what?

• Mitosis

• Meiosis

• Cell Cycle

• Interphase

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NGSS.HS-LS1-4

Which item listed below is not associated with the cell cycle?

• CDK

• Cyclins

• Phosphorylation

• GDP

Which phase is known as the rest phase, when cells are not growing or preparing to divide?

• G1

• S

• G0

• G2

Which of the following is not a checkpoint in the cell cycle?

• G1 checkpoint

• G2 checkpoint

• M checkpoint

• S checkpoint

An intestinal virus infects and destroys cells lining the intestine. Normal intestinal cells have infoldings of the plasma membrane call microvilli where the cells absorb nutrients through the membrane. As cells regrow, the microvilli are short and incomplete. Affected cells are on the left. Which of the following would best describe the effect of the shorter microvilli

• it decreases the space for more Golgi bodies , which reduces production of proteins

• it decreases the number of mitochondria, which affects energy production

• shorter microvilli decrease the surface area of the membranes, which means less absorption of nurtients

• shorter microvilli reduces the amount of lipids, affecting the fluidity of the membrane

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NGSS.HS-LS2-4

Microvilli are tiny projections that extend off the cell to increase the Surface Area.  What purpose might that serve? 

• Increased absorption
• Better communication among cells
• Maintain homeostasis 
• Decreased oxygen use

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NGSS.HS-LS1-2

How has the shape of pneumocytes in the lungs help to maintain homeostasis?

• pneumocytes are flat and thin to increase surface area for gas exchange

• pneumocytes are flat and thick to increase surface area for gas exchange

• pneumocytes are big to help increase surface area for gas exchange

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NGSS.HS-LS1-3

what is cyclin-dependent kinase (CDK)?

• uncontrolled cell growth and division. It is basically related to the abnormal functioning of cell cycle regulators

• an enzyme that controls the cell cycle and is activated by cyclin

• achieved by a group of proteins, called cyclins, and enzymes, known as cyclin-dependent kinases.

• enter the blood vessels which may carry them to different parts of the body. In this way, cancer will be spread throughout the body.

Tags

NGSS.HS-LS1-4

A(n) _____ is a stage in the eukaryotic cell cycle at which the cell examines internal and external cues and "decides" whether or not to move forward with division.

• checkpoint

• chromosome

• interphase

• tumor

Tags

NGSS.HS-LS1-4