Biology 9th Chap 3 : Topic 8 - Maryam Publications

Biology Chapter 3 : Topic 8

Stem Cells

1 / 15

What is meant by a stem cell?

A) An unspecialized cell capable of developing into different cell types

B) A dead cell providing support to tissues

C) A cell specialized for carrying oxygen

D) A cell that can no longer divide

2 / 15

Which characteristic best identifies a stem cell?

A) It contains no nucleus

B) It remains unspecialized and can produce specialized cells

C) It lacks the ability to divide

D) It performs a specific function permanently

3 / 15

Why are stem cells called "unspecialized" cells?

A) They lack genetic material

B) They do not yet perform a specific function

C) They cannot reproduce

D) They have no cell membrane

4 / 15

Which of the following is the best example of a specialized cell?

A) Stem cell

B) Blood cell

C) Undifferentiated cell

D) Embryonic stem cell

5 / 15

A cell can become a muscle cell, nerve cell, or blood cell. This cell is most likely a:

A) Skin cell

B) Bone cell

C) Stem cell

D) Red blood cell

6 / 15

Which statement correctly describes stem cells?

A) They are permanently specialized

B) They exist only in plants

C) They can divide and produce new cells

D) They cannot change into other cell types

7 / 15

What is the main difference between a stem cell and a nerve cell?

A) Nerve cells cannot carry out metabolism

B) Stem cells are unspecialized, while nerve cells are specialized

C) Stem cells lack a nucleus

D) Nerve cells contain DNA, stem cells do not

8 / 15

Which property makes stem cells important in growth and repair?

A) They can photosynthesize

B) They can produce specialized cells when needed

C) They cannot divide

D) They contain more chromosomes

9 / 15

If a tissue is damaged, stem cells can help by:

A) Destroying healthy cells

B) Preventing cell division

C) Replacing damaged cells with new specialized cells

D) Producing energy directly

10 / 15

Which statement about stem cells is incorrect?

A) They can give rise to specialized cells

B) They are unspecialized cells

C) They perform highly specific functions from birth

D) They can divide repeatedly

11 / 15

A scientist observes cells that have not yet developed a specific structure or function. These cells are most likely:

A) Muscle cells

B) Nerve cells

C) Stem cells

D) Red blood cells

12 / 15

Which feature is common to all stem cells?

A) Ability to transmit nerve impulses

B) Ability to carry oxygen

C) Ability to remain unspecialized

D) Ability to secrete hormones

13 / 15

During development, stem cells are important because they:

A) Replace DNA

B) Form only blood cells

C) Give rise to different specialized tissues

D) Prevent cell growth

14 / 15

Which of the following best defines differentiation?

A) Movement of substances across membranes

B) Process by which stem cells become specialized cells

C) Production of energy in cells

D) Replication of DNA

15 / 15

Why are stem cells not considered specialized cells?

A) They lack cytoplasm

B) They do not contain chromosomes

C) They have not developed a specific function

D) They cannot divide

Your score is

0%