Cell Structure and Functions Test

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Cell Structure and Functions Test - 9

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Weekly Quiz Competition

Question 1
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Which of the following statements is/are correct?

(i) The nucleoplasm and the cytoplasm together make up the protoplasm.

(ii) Chloroplasts are a type of plastids, which occur in plant cells.

(iii) In many multicellular organisms, all cells have projections called cilia and flagella.

(iv) Cell destruction occurs by centrosomes.

A
(i) and (ii) only

B
(i), (ii) and (iii) only

C
(i) only

D
(iii) and (iv) only

Solution

In multicellular organisms few cells have cilia and flagella e.g., in humans, cells lining the respiratory tract have cilia and sperm has flagellum. Cell destruction occurs by lysosomes as they contain hydrolytic enzymes.
Question 2
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Which of the following organelles differentiate between plant cell and animal cell?

(i) Cytoplasm (ii) Nucleus

(iii) Cell wall (iv) Large vacuole

A
(i) and (ii) only

B
(i) and (iii) only

C
(ii) and (iv) only

D
(iii) and (iv) only
Question 3
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Which of the following pairs are correctly matched?

(i) Protoplasm - Purkinje

(ii) Discovery of cell - Leeuwenhoek

(iii) Cell theory - Schwann

(iv) Omnis cellula-e-cellula - Virchow

(v) Nucleolus - Robert Brown

A
(i), (iii) and (iv) only

B
(i), (iii), (iv) and (v) only

C
(i), (ii) and (iv) only

D
(ii), (iv) and (v) only

Solution

Robert Hook discovered cell. Robert Brown discovered nucleus.
Question 4
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What is the major difference between a human skin cell and a human egg cell?

A
The egg cell has twice as many chromosomes as the skin cell.

B
The egg cell has half as many chromosomes as the skin cell.

C
The skin cell has no genetic information in its chromosomes.

D
Only the egg cell has a nucleus.
Question 5
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Endoplasmic reticulum is a network of interconnecting membranous structures filled with fluid. Which of the following cells would most likely have high concentration of densely packed rough endoplasmic reticulum?

A
A bioluminescent bacterial cell

B
A functional phloem at maturity

C
An amoeba engulfing small ciliates

D
A pancreatic cell engaged in the production of digestive enzymes

Solution

Endoplasmic reticulum helps in the transport of substances within the cell. Rough endoplasmic reticulum (RER) bears ribosomes on the cytoplasmic surface and synthesises secretory and membranous proteins. Then the modified proteins move into the transitional area where they are further processed and packed into secretory vesicles. Thus, RER is rich in cells which are actively engaged in protein synthesis and secretory activity, e.g., pancreatic cells engaged in the production of digestive enzymes, etc.
Question 6
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Directions For Questions

Refer to the given paragraph.

X and Y are the two type of cells. The X have a well organised nucleus which is separated from the cytoplasm by the nuclear membrane. On the other hand, Y do not have a true nucleus and their nuclear material is in direct contact with cytoplasm.

...view full instructions

Identify X and Y and select the correct option.

A
X could be Mycoplasma whereas Y could be Amoeba.

B
X could be Amoeba whereas Y could be Mycoplasma.

C
X could be nerve cells whereas Y could be xylem cells.

D
X could be xylem cells whereas Y could be nerve cells.

Solution

In the given paragraph, X and Y could be eukaryotic and prokaryotic cell respectively. Amoeba is an eukaryotic organism while Mycoplasma is a prokaryotic organism. Nerve cells and xylem cells are tissues.
Question 7
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Which of the following statements is/are incorrect regarding genes?

(i) They control the transfer of hereditary characteristics.

(ii) Nucleolus carries all the genes.

(iii) They are part of chromosomes.

(iv) They are found only in the nucleus.

A
(iii) only

B
(iii) and (iv) only

C
(i) only

D
(ii) and (iv) only

Solution

Nucleus carries genes as they are part of chromosomes (made up of DNA) and chromosomes are present in the nucleus. Genes are also found in mitochondria and chloroplasts as these organelles contain their own DNA.

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(i) Cytoplasm	(ii) Nucleus
(iii) Cell wall	(iv) Large vacuole

Cell Structure and Functions Test - 9

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Cell Structure and Functions Test - 9

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Question 1

(i) and (ii) only

(i), (ii) and (iii) only

(i) only

(iii) and (iv) only

Solution

Question 2

(i) and (ii) only

(i) and (iii) only

(ii) and (iv) only

(iii) and (iv) only

Question 3

(i), (iii) and (iv) only

(i), (iii), (iv) and (v) only

(i), (ii) and (iv) only

(ii), (iv) and (v) only

Solution

Question 4

The egg cell has twice as many chromosomes as the skin cell.

The egg cell has half as many chromosomes as the skin cell.

The skin cell has no genetic information in its chromosomes.

Only the egg cell has a nucleus.

Question 5

A bioluminescent bacterial cell

A functional phloem at maturity

An amoeba engulfing small ciliates

A pancreatic cell engaged in the production of digestive enzymes

Solution

Question 6

X could be Mycoplasma whereas Y could be Amoeba.

X could be Amoeba whereas Y could be Mycoplasma.

X could be nerve cells whereas Y could be xylem cells.

X could be xylem cells whereas Y could be nerve cells.

Solution

Question 7

(iii) only

(iii) and (iv) only

(i) only

(ii) and (iv) only

Solution

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