Cell Cycle Regulation

Question 1

What is cyclin?

Answer 1

a protein that regulates the cell cycle

Question 2

What are the two different cyclin?

Answer 2

protein cyclins and enzyme cyclin (CDK)

Question 3

How does cancer form?

Answer 3

uncontrolled growth and divison of cells, failure in the regulation of cell cycle

Question 4

What phase do cancer cells spend less time in?

Answer 4

Interphase

Question 5

What are carcinogens?

Answer 5

substances that are known to cause cancer

Question 6

What is apoptosis?

Answer 6

the process in which a cell that is no longer needed commits suicide

Question 7

How many cells die from apoptosis?

Answer 7

between 50 and 70 billion cells die each day due to apoptosis in the average human adult. Between 20 to 30 billion for children

Question 8

What are the two types of stem cells?

Answer 8

Embryonic stem cells and adult stem cells

Question 9

What are embryonic stem cells?

Answer 9

they are pluripotent stem cells that come from embryos

Question 10

What are the advantages of embryonic stem cells?

Answer 10

capable of turning into any cell or tissue

Question 11

What are the disadvantages of embryonic stem cells?

Answer 11

their research is controversial as there are concerns about where they come from

Question 12

What are adult stem cells?

Answer 12

they are found in the body after embryonic development

Question 13

What are some disadvantages of adult stem cells?

Answer 13

have caused patients with eye problems to go blind, have resulted in abnormal growth of organs when injected, have created clones but not long lasting