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) A dead cell providing support to tissues

B) A cell specialized for carrying oxygen

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

D) A cell that can no longer divide

2 / 15

Which characteristic best identifies a stem cell?

A) It performs a specific function permanently

B) It contains no nucleus

C) It remains unspecialized and can produce specialized cells

D) It lacks the ability to divide

3 / 15

Why are stem cells called "unspecialized" cells?

A) They cannot reproduce

B) They do not yet perform a specific function

C) They lack genetic material

D) They have no cell membrane

4 / 15

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

A) Embryonic stem cell

B) Undifferentiated cell

C) Blood cell

D) 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) Red blood cell

D) Stem cell

6 / 15

Which statement correctly describes stem cells?

A) They are permanently specialized

B) They exist only in plants

C) They cannot change into other cell types

D) They can divide and produce new cells

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

A) Nerve cells cannot carry out metabolism

B) Nerve cells contain DNA, stem cells do not

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

D) Stem cells lack a nucleus

8 / 15

Which property makes stem cells important in growth and repair?

A) They cannot divide

B) They can produce specialized cells when needed

C) They can photosynthesize

D) They contain more chromosomes

9 / 15

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

A) Destroying healthy cells

B) Replacing damaged cells with new specialized cells

C) Producing energy directly

D) Preventing cell division

10 / 15

Which statement about stem cells is incorrect?

A) They can give rise to specialized cells

B) They can divide repeatedly

C) They perform highly specific functions from birth

D) They are unspecialized cells

11 / 15

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

A) Red blood cells

B) Stem cells

C) Muscle cells

D) Nerve cells

12 / 15

Which feature is common to all stem cells?

A) Ability to carry oxygen

B) Ability to transmit nerve impulses

C) Ability to remain unspecialized

D) Ability to secrete hormones

13 / 15

During development, stem cells are important because they:

A) Form only blood cells

B) Prevent cell growth

C) Replace DNA

D) Give rise to different specialized tissues

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

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