AP Cell Cycle & Regulation

What is apoptosis?

• A tumor

• A protein

• Programmed cell death

• Cell cycle checkpoints

Which of the following is a type of protein that regulates the cell cycle? 

• actin 
• myosin 
• cyclin 
• pepsin 

Why do cells go through cell division

• Growth
• Reproduction
• Repair
• All of the above

DNA is replicated during ______ of the cell cycle.

• G1
• S
• G2
• G0

Which of the following shows the correct sequence of the cell cycle?

• Mitosis-> G1->S->G2->cytokinesis
• S->G1-> G2-> mitosis-> cytokinesis
• cytokinesis->mitosis->G1->S->G2
•  G1->S->G2->mitosis->cytokinesis

What is cell differentiation?

• The process where unspecialized cells become different in structure and function.

• When DNA controls the cell cycle.

• The ability of cells to make more cells.

• The ability of cells to maintain homeostasis.

Which of the following happens when a cell divides?

• Each daughter cell receives its own copy of the parent cell’s DNA.
• The cell has DNA overload.
• It becomes more difficult for the cell to get enough oxygen and nutrients.
• The cell’s volume increases.

p53 activates which of the following?

• Tumor suppressor genes
• cell cycle
• DNA repair proteins
• uncontrolled cell division

The normal function of a tumor suppressor gene is 

• to produce growth signals
• to code for proteins that inhibit, or slow, cell division
• to cause the cell to move faster through the cell cycle
• to attack cancer cells in the body

Which of the following statements is true?

• Proto-oncogenes cause a loss of control of the cell cycle
• the products of oncogenes may inhibit the cell cycle
• tumor-suppressor-gene products inhibit the cell cycle
• a mutation in a proto-oncogene may convert it into a tumor suppresor gene