Cell The Unit of Life Test

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Cell The Unit of Life Test - 80

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following option is not related with mitochondria?

A
Photophosphorylation

B
Formation of ATP

C
Endosymbiotic origin

D
Division by fission

Solution

Photosynthesis is the process of converting the energy of light into the energy of chemical bonds. This occurs in the chloroplasts of cells, specifically, in the thylakoid membranes. The formation of ATP during the photosynthesis is called the photophosphorylation.
Hence, the correct answer is 'Photophosphorylation'
Question 2
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Consider the following processes

(i) Breakdown of extra-cellular materials by releasing enzymes into the surrounding medium.
(ii) Providing nourishment during starvation.
(iii) Help during remodeling of the bone.
(iv) The massive production of membrane glycoproteins, ribophorins-I, and II for the stabilization of lysosomal investment.

Which of the given is/are functions of lysosomes?

A
(i) only

B
(i), (ii) and (iv)

C
(i), (ii) and (iii)

D
(ii), (iii) and (iv)

Solution

The interactions between extracellular fibronectin fibrils and intracellular actin filaments across the fibroblast plasma membrane are mediated mainly by integrin transmembrane adhesion proteins. The contractile actin and myosin cytoskeleton thereby pulls on the fibronectin matrix to generate tension.
So, the correct option is ' (i) only'.
Question 3
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Digestion of reserve food during starvation by lysosomes are called?

A
Autophagy

B
Autolysis

C
Extracellular

D
Heterophagy

Solution

Lysosomes are also called as heterophagous. Lysosome fuses with the food containing phagosome. They are also called acid hydrolases because these digestive enzymes usually function in acidic medium or pH of 4—5. The covering membrane of lysosomes keeps the hydrolytic enzymes out of contact from the cellular contents. It is itself protected from them by high glycosylation of its proteins and lipids. Thus Lysosomes help in digestion.
So the correct answer is 'Heterophagy'.
Question 4
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SER helps in manufacture of

A
Starch

B
Proteins

C
Fats

D
Ribosomes
Solution
- starch is a polymeric carbohydrate , which is synthesize by glucose by aprocess called glucogenesis and regulated by hormon insulin which is secreated by pancrease. major source of starch is potato,rice,peas,etc.
- protein is a macromolecule synthesized by RER due to presence of ribosome by prcess called translation.
- SER mainly carry out the synthesis of lipids, and lipids are nothing but fats and fatty acids existing in vegitable and animal kingdom.
- ribosomes are not present in SER they are found on surface of RER,hence they are not synthesize by SER.
hence the correct answer is "Fat"
So,option C is correct.
Question 5
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Match the columns and identify the correct option
Column I Column II
a. Amyloplast i. Red chilli
b. Elaioplast ii. Stores oil in castor
c. Aleuroplast iii. Potato tuber
d. Chromoplast iv. Proteinaceous cells of maize

A
a - iii, b - ii, c - iv, d - i

B
a - iii, b - iv, c - ii, d - i

C
a - ii, b - i, c - iii, d - i

D
a - ii, b- iv, c - iii, d - i

Solution

Amyloplasts are organelles found in plant cells which store starch and are found in vegetables like potato tuber.
Elaioplasts store lipids and oil bodies in plants like castor.
Aleuroplasts are also called proteinoplasts and they have crystalline protein structures and they can be sites of enzyme activity. These are found in maize.
Chromoplasts are responsible for synthesis of pigments in plants mostly orange or yellow pigments. Colour red of red-chili is because of these pigments.
Thus, the correct answer is 'a - iii, b - ii, c - iv, d - i.'
Question 6
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Which group of organelles are involved in anabolic processes in a cell?

A
Lysosome, vacuole, Ribosome

B
Ribosome, Rough ER, Smooth ER

C
Vacuole, RER, SER

D
SER, Ribosome vacuole

Solution

The lysosome is involved in the catabolic process.
The ribosome, Rough ER, Smooth ER are involved in the anabolic process like protein synthesis, gluconeogenesis and catabolic process glycogenolysis.
So the correct option is 'Ribosome, Rough ER, Smooth ER'
Question 7
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Single envelope system is characteristic feature of

A
Prokaryotic cell

B
Eukaryotic cell

C
Mesokaryotic cell

D
More than one option is correct.

Solution

In prokaryotic cells, membrane-bound cell organelles are absent. So there is a single membrane that surrounds the cell and they are said to be single membrane or one-envelope system.
So, the correct option is 'Prokaryotic cell'.
Question 8
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Identify the site where synthesis of lipid takes place.

A
Rough ER

B
Smooth ER

C
Ribosome

D
Chloroplast

Solution

Lipid synthesis takes place at the interface of the SER (smooth endoplasmic reticulum) membrane and the cytosol . The initial starting material is embedded in the membrane while cytosolic enzymes and building materials continually modify it until the lipid production is complete.
Thus, the correct answer is 'Smooth ER.'
Question 9
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Hydrolytic enzymes are stored in

A
Golgi bodies

B
Lysosomes

C
Endoplasmic reticulum

D
Mitochondria

Solution

Lysosomes are membrane-enclosed compartments filled with hydrolytic enzymes that are used for the controlled intracellular digestion of macromolecules. They contain about 40 types of hydrolytic enzymes, including proteases, nucleases, glycosidases, lipases, phospholipases, phosphatases, and sulfatases. So, the correct option is "B" (Lysosomes).
Question 10
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All of the following are components of coenzyme nicotinamide adenine dinucleotide except

A
Ribose

B
Deoxyribose

C
Niacin

D
Phosphate

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Re-Attempt Weekly Quiz Competition

	Column I		Column II
a.	Amyloplast	i.	Red chilli
b.	Elaioplast	ii.	Stores oil in castor
c.	Aleuroplast	iii.	Potato tuber
d.	Chromoplast	iv.	Proteinaceous cells of maize

Cell The Unit of Life Test - 80

Result

Cell The Unit of Life Test - 80

Score

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SHARING IS CARING

Question 1

Photophosphorylation

Formation of ATP

Endosymbiotic origin

Division by fission

Solution

Question 2

(i) only

(i), (ii) and (iv)

(i), (ii) and (iii)

(ii), (iii) and (iv)

Solution

Question 3

Autophagy

Autolysis

Extracellular

Heterophagy

Solution

Question 4

Starch

Proteins

Fats

Ribosomes

Solution

Question 5

a - iii, b - ii, c - iv, d - i

a - iii, b - iv, c - ii, d - i

a - ii, b - i, c - iii, d - i

a - ii, b- iv, c - iii, d - i

Solution

Question 6

Lysosome, vacuole, Ribosome

Ribosome, Rough ER, Smooth ER

Vacuole, RER, SER

SER, Ribosome vacuole

Solution

Question 7

Prokaryotic cell

Eukaryotic cell

Mesokaryotic cell

More than one option is correct.

Solution

Question 8

Rough ER

Smooth ER

Ribosome

Chloroplast

Solution

Question 9

Golgi bodies

Lysosomes

Endoplasmic reticulum

Mitochondria

Solution

Question 10

Ribose

Deoxyribose

Niacin

Phosphate

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