Stem Calls

Question 1

What are stem cells?

Answer 1

Stem cells are undifferentiated cells that have the ability to develop into different cell types.

Question 2

True or False: All stem cells are the same.

Answer 2

False

Question 3

What is the primary function of stem cells?

Answer 3

The primary function of stem cells is to divide and produce more cells, which can differentiate into specialized cells.

Question 4

Fill in the blank: Stem cells can be classified into _____ and _____ stem cells.

Answer 4

embryonic, adult

Question 5

Which type of stem cell is capable of developing into any cell type?

Answer 5

Embryonic stem cells

Question 6

What is the term for the process by which stem cells become specialized?

Answer 6

Differentiation

Question 7

True or False: Adult stem cells are more versatile than embryonic stem cells.

Answer 7

False

Question 8

What is a key ethical concern regarding embryonic stem cell research?

Answer 8

The destruction of human embryos.

Question 9

What is the main source of adult stem cells?

Answer 9

Tissues such as bone marrow, blood, and fat.

Question 10

Multiple Choice: Which of the following is NOT a potential use of stem cells? A) Regenerating damaged tissues B) Cloning organisms C) Treating diseases

Answer 10

B) Cloning organisms

Question 11

What type of stem cells are found in umbilical cord blood?

Answer 11

Hematopoietic stem cells

Question 12

Fill in the blank: Stem cells have the unique ability to _____ indefinitely.

Answer 12

self-renew

Question 13

What are induced pluripotent stem cells (iPSCs)?

Answer 13

iPSCs are adult cells that have been genetically reprogrammed to an embryonic stem cell-like state.

Question 14

True or False: Stem cells can only be used for research and not for treatment.

Answer 14

False

Question 15

What is the significance of stem cell therapy?

Answer 15

It has the potential to treat a variety of diseases and injuries by regenerating damaged tissues.

Question 16

Multiple Choice: Which condition has been treated using stem cells? A) Diabetes B) Broken bones C) Both A and B

Answer 16

C) Both A and B

Question 17

What is a stem cell niche?

Answer 17

A specialized microenvironment that supports the maintenance and function of stem cells.

Question 18

Fill in the blank: Stem cells are used in _____ to replace damaged or diseased tissues.

Answer 18

regenerative medicine

Question 19

What is the role of signaling molecules in stem cell differentiation?

Answer 19

They guide the process of differentiation by influencing gene expression.

Question 20

True or False: All stem cells can divide an unlimited number of times.

Answer 20

False

Question 21

What are the two main types of embryonic stem cells?

Answer 21

Totipotent and pluripotent stem cells.

Question 22

Fill in the blank: The process of creating iPSCs involves introducing _____ into adult cells.

Answer 22

specific genes

Question 23

What is the importance of stem cell research?

Answer 23

It helps in understanding development, disease mechanisms, and potential treatments.

Question 24

Multiple Choice: Which of the following is a characteristic of stem cells? A) They can only become one type of cell B) They can self-renew C) They cannot divide

Answer 24

B) They can self-renew

Question 25

What is the difference between totipotent and pluripotent stem cells?

Answer 25

Totipotent stem cells can develop into any cell type, including placental tissue, while pluripotent stem cells can develop into almost any cell type but not placental tissue.