AP BIOLOGY

CELL DIVISION

CELL DIVISION AND CANCEROUS CELLS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do stem cells do?
A
Responsible for replication.
B
They lay dormant until they are needed to replicate and regrow cells.
C
Make blood.
D
Kill germs.
Explanation: 

Detailed explanation-1: -Stem cells are pretty ubiquitous in the body, appearing in many different organs and tissues including the brain, blood, bone marrow, muscle, skin, heart, and liver tissues. In these areas, they lie dormant until needed to regenerate lost or damaged tissue.

Detailed explanation-2: -In the absence of stress, most blood stem cells remain inactive or dormant in order to protect their unique potential of generating mature cells within our blood.

Detailed explanation-3: -Stem cells are the body’s raw materials-cells from which all other cells with specialized functions are generated. Under the right conditions in the body or a laboratory, stem cells divide to form more cells called daughter cells.

Detailed explanation-4: -Although stem cells have a high potential to proliferate, they are rather inactive in terms of cell cycle, most likely to prevent their own exhaustion [2] and to protect themselves from acquiring potentially tumorigenic mutations [3, 4].

Detailed explanation-5: -Stem cells produce new cells by dividing. In the right conditions, these new cells can then continue to divide and differentiate into specialized cells. Stem cells can also divide to produce new stem cells to replace themselves. They are self-replicating.

There is 1 question to complete.