Cell The Unit of Life Test

Result

Cell The Unit of Life Test - 93

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Weekly Quiz Competition

Question 1
1 / -0

Match column I with column II and select the correct option from the codes given below:
Column I Column II
(A) Mitochondria (i) Without membrane
(B) Lysosome (ii) Single membrane
(C) Ribosomes (iii) Double membrane
(D) Nucleus

A
A- (i); B- (ii); C- (iii); D- (iii)

B
A- (iii); B- (i); C- (i); D- (ii)

C
A- (iii); B- (ii); C- (i); D- (iii)

D
A- (ii); B- (iii); C- (i); D- (iii)
Solution
- Mitochondria is a double membrane bound structure involved in aerobic respiration and ATP production.
- Lysosomes are the single membrane bound vesicular structure involved in digesting carbohydrates, proteins, lipids and nucleic acids.
- Ribosomes are the granular structure not bound by any membrane.
- Nucleus is a double membrane structure . The outer membrane usually remains continuous with ER and the inner membrane called nuclear membrane.
- So, the correct option is 'Option C' .
Question 2
1 / -0

Endoplasmic reticulum is involved in all of the following except:

A
Production of ribosomes

B
Synthesis of lipids

C
Synthesis of proteins

D
Transportation of molecules to the cell membrane for export

Solution

Endoplasmic reticulum function is for the synthesis of lipids, synthesis of proteins, transportation of molecules to the cell membrane for export but not for the production of ribosomes. It is done by the nucleolus present within the nucleus.
Hence, the correct answer is 'Production of ribosomes'.
Question 3
1 / -0

Consider the following statements and select the correct option.
(A) The endomembrane system includes plasma membrane, ER, Golgi complex, Lysosomes and vacuoles.
(B) ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen.
(C) Ribosomes are involved in protein synthesis.
(D) Mitochondria help on oxidative phosphorylation and generation of ATP.

A
(B), (C) and (D) are correct

B
(A) alone is correct

C
(B) alone is correct

D
(C) alone is correct

E
(D) alone is correct

Solution

ER helps in the transport of substances, synthesis of proteins, lipoproteins and glycogen, Ribosomes are involved in protein synthesis and Mitochondria help in oxidative phosphorylation and generation of ATP. However the endomembrane system includes plasma membrane, ER, Golgi complex, Lysosomes but not vacuoles. Thus vacuoles are not a part of the endomembrane system of the cell.

So the correct option is '(B), (C) and (D) are correct'.
Question 4
1 / -0

The following organism is

A
Eukaryotic

B
Prokaryotic

C
Multicellular

D
None of the above

Solution

Prokaryotic cells are the unicellular organisms that lack organelles in them. They even don't have nucleus. Instead of nucleus they have a double stranded DNA located at the area of nucleoid. Bacteria are the example of prokaryotes.
So, the correct option is 'Prokaryotic'.
Question 5
1 / -0

Ribosomes , when associated with ER,attach with their

A
Smaller subunit

B
Large subunit (60S)

C
$$80S$$ subunit

D
Either by smaller or by larger subunits
Solution
- Ribosomes get attached to the endoplasmic reticulum firstly by its small subunit and then the large subunit gets attached to the small unit forming a proper structure of the ribosome.
So the correct answer is 'Smaller subunit'.
Question 6
1 / -0

The cytoskeleton is a proteinaceous network of fibers in the cytoplasm. It is involved in

A
Mechanical support

B
Motility

C
Maintenance of cell -shape

D
All of the above

Solution

Cytoskeleton network consists of protein microfilaments, intermediate filaments, and microtubules. Functions include cellular movement, organelle trafficking, protect against mechanical stress and maintenance of eukaryotic cell shape.
So the correct answer is 'All of the above'.
Question 7
1 / -0

In which type of muscles, mitochondria are expected to be found in largest numbers?

A
Eye muscles

B
Thigh muscles

C
Cardiac muscles

D
Thoracic muscles of birds

Solution

Mitochondria is a double membrane-bound organelle found in most eukaryotic organisms. The roles of mitochondria are to produce the energy currency of the cell. As it provides the energy it is present in thoracic muscles of birds because these muscles help in flight adaptations in birds. Flying birds require more energy which is supplied to them by mitochondria.
So, the correct option is 'Thoracic muscles of birds'.
Question 8
1 / -0

Both the membranes of mitochondria are

A
Structurally different but functionally similar.

B
Structurally as well as functionally different.

C
Structurally similar but functionally different.

D
None of these

Solution

The outer membrane of mitochondria protein-to-phospholipid ratio in 1:1 ratio and contains integral membrane proteins called porins. Whereas the inner membrane protein-to-phospholipid ratio of 3:1 and contains unusual phospholipid, cardiolipin. Outer membrane imports proproteins and inner membrane also imports proteins but involved in ATP synthesis which outer membrane does not perform.
So the correct answer is 'Structurally as well as functionally different.'
Question 9
1 / -0

Which of the following is /are function (s) of lipochondria?
(I)Chemical modification of lipids and proteins
(II) Detoxification
(III) Formation of acrosome
(IV) Glycogen synthesis & breakdown

A
I and II are correct

B
I and III are correct

C
II is incorrect and remaining are correct

D
II and III are incorrect

Solution

The Golgi body also called as lipochondria's major function is the modifying, sorting and packaging of proteins for secretion . It is also involved int he transport of lipids around the cell and the creation of lysosomes.
So, the correct option is 'I and III are correct'.
Question 10
1 / -0

Which of the following is related to glycosylation of proteins

A
Lysosome

B
Mitochondria

C
Peroxisome

D
Rough endoplasmic reticulum

Solution

Glycosylation is the biochemical reaction in which the carbohydrates get attached to a hydroxyl or other functional group of another molecule. This process takes place in the endoplasmic reticulum and Golgi apparatus.
'.So, the correct option is 'Rough Endoplasmic reticulum

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Column I	Column II
(A) Mitochondria	(i) Without membrane
(B) Lysosome	(ii) Single membrane
(C) Ribosomes	(iii) Double membrane
(D) Nucleus

Cell The Unit of Life Test - 93

Result

Cell The Unit of Life Test - 93

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Question 1

A- (i); B- (ii); C- (iii); D- (iii)

A- (iii); B- (i); C- (i); D- (ii)

A- (iii); B- (ii); C- (i); D- (iii)

A- (ii); B- (iii); C- (i); D- (iii)

Solution

Question 2

Production of ribosomes

Synthesis of lipids

Synthesis of proteins

Transportation of molecules to the cell membrane for export

Solution

Question 3

(B), (C) and (D) are correct

(A) alone is correct

(B) alone is correct

(C) alone is correct

(D) alone is correct

Solution

Question 4

Eukaryotic

Prokaryotic

Multicellular

None of the above

Solution

Question 5

Smaller subunit

Large subunit (60S)

$$80S$$ subunit

Either by smaller or by larger subunits

Solution

Question 6

Mechanical support

Motility

Maintenance of cell -shape

All of the above

Solution

Question 7

Eye muscles

Thigh muscles

Cardiac muscles

Thoracic muscles of birds

Solution

Question 8

Structurally different but functionally similar.

Structurally as well as functionally different.

Structurally similar but functionally different.

None of these

Solution

Question 9

I and II are correct

I and III are correct

II is incorrect and remaining are correct

II and III are incorrect

Solution

Question 10

Lysosome

Mitochondria

Peroxisome

Rough endoplasmic reticulum

Solution

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