Biomolecules Test

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Biomolecules Test - 55

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Weekly Quiz Competition

Question 1
1 / -0

The amino acid containing mercaptan unit is:

A
leucine

B
glutamine

C
cysteine

D
lysine

E
isoleucine

Solution

Amino acid cysteine have mercaptan unite i.e. $$-SH$$ unit
Question 2
1 / -0

Which of the following amino acid is neutral ?

A
Aspartic acid

B
Glycine

C
Lysine

D
Arginine

Solution

Neutral Amino acids: Glycine, Alanine, leucine, Isoleucine, valine, phenylalanine, Proline, methionine, serine, threonine, tyrosine, cysteine, glutamine, asparagine, tryptophan.

Acidic amino acids: Aspartic acid, glutamic acid

Basic amino acids: Lysine, histidine, Arginine

Therefore, option B is correct
Question 3
1 / -0

Progesterone is secreted by:

A
Thyroid

B
Ovaries

C
Adrenal

D
Testes

Solution

A steroid, progesteron is secreted chiefly by the corpus luteum, a group of cells formed in the ovary after the follicle ruptures during the release of egg cell.
Question 4
1 / -0

In which of the following compound, all the monosaccharide units are not joined by only $$C_1 - O - C_4$$ chain?

A
Lactos

B
Maltose

C
Cellulose

D
Amylopectin

Solution

Amylopectin is a branched chain polymer of $$\alpha-D-glucose$$ units in which chain is formed by $$C_1- C_4$$ glycosidic linkage whereas branching occurs by $$C_1- C_6$$ glycosidic linkage.
Thus, amylopectin contains linkage between $$C_1 \ and \ C_4$$ and also between $$C_1 \ and \ C_6$$.
Question 5
1 / -0

Which of the following differs in nature from others?

A
Vasopressin

B
Thyroid

C
Oxytocin

D
Insulin

Solution

Vasopressin, oxytocin, insulin, angiotensin, are peptide hormones whereas thyroid, adrenaline are amine hormones.

Option B is correct.
Question 6
1 / -0

Which of the following is a pheromone?

A
Linalool

B
Disparlure

C
BHA

D
Alitame

Solution

Disparlure is an pheromone.
Question 7
1 / -0

For which vitamin liver is not the source ?

A
Vitamin - $$B_2$$

B
Vitamin - $$B_1$$

C
Vitamin - $$B_{12}$$

D
Vitamin - $$H$$

Solution

Liver is not the source of Vitamin - $$B_1$$
Question 8
1 / -0

Which vitamin is not obtained from plants ?

A
Cyanocobalamine

B
Thiamine

C
Pyridoxine

D
$$\alpha-$$ tocopherol

Solution

Cyanocobalamine is vitamin $$B_{12}$$. It is manufactured by bacteria and can only be found naturally in animal products. Its main sources are liver of ox, fish, crab, milk, cheese, etc. Thus, it is not obtained from plants.
Question 9
1 / -0

The vitamin which is neither soluble in water nor in fat is:

A
Biotin

B
Phylloquinone

C
Thiamine

D
Pyridoxine

Solution

Biotin (vitamin$$ H$$) is neither soluble in water nor in fat.

Option A is correct.
Question 10
1 / -0

Many pathogens produce cellulolytic, enzymes which act upon the host cell wall. The correct sequence of the given cellulolytic enzymes that are involved in the breakdown of cellulose is?

A
Cellobiase, $$C_1$$ enzyme, Cx enzyme

B
Cellobiase, Cx enzyme, $$C_1$$ enzyme

C
$$C_1$$ enzyme, Cx enzyme, Cellobiase

D
Cx enzyme, $$C_1$$ enzyme, Cellobiase

Solution

Enzymatic hydrolysis of cellulose is an important reaction in nature for it marks the first step in the decay of cellulose, the most abundantly occurring organic material by which many pathogens enter the host cell wall. Whitaker (1953-1954) has concluded that his Myrothecium verrucaria cellulase is a single enzyme capable of hydrolyzing native cellulose C1 enzyme followed by Cx enzyme then at last cellobiase . Cellobiase is involved in the last step of the process of breaking down cellulose, a molecule made up of bundled long chains of glucose that are found in plant cell walls, to glucose. This is a natural process that is used by fungi to produce glucose as a food source.
So, the correct option is 'C'.

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Re-Attempt Weekly Quiz Competition

Biomolecules Test - 55

Result

Biomolecules Test - 55

Score

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Rank

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SHARING IS CARING

Question 1

leucine

glutamine

cysteine

lysine

isoleucine

Solution

Question 2

Aspartic acid

Glycine

Lysine

Arginine

Solution

Question 3

Thyroid

Ovaries

Adrenal

Testes

Solution

Question 4

Lactos

Maltose

Cellulose

Amylopectin

Solution

Question 5

Vasopressin

Thyroid

Oxytocin

Insulin

Solution

Question 6

Linalool

Disparlure

BHA

Alitame

Solution

Question 7

Vitamin - $$B_2$$

Vitamin - $$B_1$$

Vitamin - $$B_{12}$$

Vitamin - $$H$$

Solution

Question 8

Cyanocobalamine

Thiamine

Pyridoxine

$$\alpha-$$ tocopherol

Solution

Question 9

Biotin

Phylloquinone

Thiamine

Pyridoxine

Solution

Question 10

Cellobiase, $$C_1$$ enzyme, Cx enzyme

Cellobiase, Cx enzyme, $$C_1$$ enzyme

$$C_1$$ enzyme, Cx enzyme, Cellobiase

Cx enzyme, $$C_1$$ enzyme, Cellobiase

Solution

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