Biomolecules Test

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Biomolecules Test - 60

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Weekly Quiz Competition

Question 1
1 / -0

Match column I with column II and mark the appropriate choice.
Column I Column II
(A) Pentise sugar in DNA (i) Ascorbic acid
(B) Nucleic acid (ii) Uracil
(C) RNA (iii) Genetic material
(D) Vitamin (iv) Furanose structure

A
(A) $$\rightarrow$$ (iv); (B) $$\rightarrow$$ (iii); (C) $$\rightarrow$$ (ii); (D) $$\rightarrow$$ (i)

B
(A) $$\rightarrow$$ (iii); (B) $$\rightarrow$$ (ii); (C) $$\rightarrow$$ (iv); (D) $$\rightarrow$$ (i)

C
(A) $$\rightarrow$$ (ii); (B) $$\rightarrow$$ (iii); (C) $$\rightarrow$$ (iv); (D) $$\rightarrow$$ (i)

D
(A) $$\rightarrow$$ (i); (B) $$\rightarrow$$ (ii); (C) $$\rightarrow$$ (iii); (D) $$\rightarrow$$ (iv)

Solution

$$A.$$ Pentise sugar in DNA is fructose (Furanose structure)
$$B.$$ Neucleic acid contains genetic materic
$$C.$$ RNA has uracil
$$D.$$ Vitamin is ascorbic acid.
Question 2
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Within the list shown below, the correct pair of structures of alanine in $$pH$$ range $$2-4$$ and $$9-11$$ is:
I. $${H}_{3}{N}^{+}CH({CH}_{3}){CO}_{2}H$$
II. $${H}_{2}NCH({CH}_{3}){CO}_{2}^{-}$$
III. $${H}_{3}{N}^{+}CH({CH}_{3}){CO}_{2}^{-}$$
IV. $${H}_{2}NCH({CH}_{3}){CO}_{2}H$$

A
I, II

B
I, III

C
II, III

D
III, IV

Solution

As the isoelectric point of Alanine is 6.1.

At $$ p{H} $$ below p$$ ^{I} $$ it has $$ NH_{3}^{\bigoplus} $$

At $$ p{H} $$ above p$$ ^{I} $$ it has $$ COO^{\ominus } $$

Option A is correct.
Question 3
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If one strand of DNA has the sequence ATGCTTGA, the sequence in the complementary strand would be:

A
TCCGAACT

B
TACGTAGT

C
TACGAATC

D
TACGAACT

Solution

The base pairs on one strand of the DNA bind with the base pairs of the other strand specifically. A always pairs with T with two hydrogen bonds and G always pairs with C with three hydrogen bonds. So if one strand is ATGCTTGA then the complementary strand will be TACGAACT.
Question 4
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Which substance is not present in nucleic acids?

A
Cytosine

B
Adenine

C
Thymine

D
Guanidine

Solution

A nucleotide consists of a sugar molecule (either ribose in RNA or deoxyribose in DNA) attached to a phosphate group and a nitrogen-containing base.

The bases used in DNA are adenine (A), cytosine (C), guanine (G), and thymine (T). In RNA, the base uracil (U) takes the place of thymine.
Question 5
1 / -0

Glycogen, a naturally occurring polymer stored in animals is a:

A
monosaccharide

B
disaccharide

C
trisaccharide

D
polysaccharide

Solution

Glycogen is a polysaccharide made up of almost $$2000-200000$$ units of $$\alpha-D$$ glucose, it is a branched structure, there are two types of bonds present in glycogen as the $$\alpha$$ 1-4 glycosidic and $$\alpha$$ 1-6 glycosidic bond.
Glycogen stores in cells of liver and muscles and gives the red color with iodine also it is named as animal starch.
Question 6
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Which of the following pairs form the same osazone?

A
Glucose and Fructose

B
Glucose and Galactose

C
Glucose and Arabinose

D
Lactose and Maltose

Solution

When sugars react with an excess of phenylhydrazine, a class of compounds known as osazone is formed.

Glucose and fructose differ in the arrangement of atoms around the $$C-1$$ and $$C-2$$ carbon. When both of them react with three molecules of phenylhydrazine, the formation of osazone crystals makes the difference between the carbon atoms in their chain and hence they form the same osazone.

Hence, the correct answer is option $$\text{A}$$.
Question 7
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Which of the following compounds is found in abundance in nature?

A
Fructose

B
Glucose

C
Starch

D
Cellulose

Solution

Cellulose is a type of carbohydrate, containing chains of glucose rings. The cell walls, which are responsible for providing support and rigidity to the plants are made of cellulose.

It is also the primary constituent of wood, making it the most abundant organic compound found in nature.

Hence, the correct answer is option $$\text{D}$$.
Question 8
1 / -0

Which of the following vitamin is insoluble in water and fat both?

A
E

B
K

C
H

D
C

Solution

Vitamin H is insoluble in water and fat both. Vitamin B and C are soluble in water. Vitamin A, D, E, K, and P are soluble in fat.
Question 9
1 / -0

Which of the following is a fat soluble vitamin?

A
Vitamin A

B
Vitamin C

C
Pyridoxine

D
Vitamin B - Complex

Solution

Vitamin A, D, E, K are fat soluble whereas vitamin B and C are water soluble. Pyridoxine(Vitamin B6) is water soluble as well
Question 10
1 / -0

Which carbohydrate does not have $$C_x(H_2O)_y$$ general formula?

A
Melitriose

B
Stachyose

C
Fructose

D
Rhamnose

Solution

Rhamnose is a carbohydrate which does not have $$C_x(H_2O)_y$$ general formula. The formula of Rhamnose is $$ \displaystyle C_6H_{12}O_5$$

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Re-Attempt Weekly Quiz Competition

Column I	Column II
(A) Pentise sugar in DNA	(i) Ascorbic acid
(B) Nucleic acid	(ii) Uracil
(C) RNA	(iii) Genetic material
(D) Vitamin	(iv) Furanose structure

Biomolecules Test - 60

Result

Biomolecules Test - 60

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Question 1

(A) $$\rightarrow$$ (iv); (B) $$\rightarrow$$ (iii); (C) $$\rightarrow$$ (ii); (D) $$\rightarrow$$ (i)

(A) $$\rightarrow$$ (iii); (B) $$\rightarrow$$ (ii); (C) $$\rightarrow$$ (iv); (D) $$\rightarrow$$ (i)

(A) $$\rightarrow$$ (ii); (B) $$\rightarrow$$ (iii); (C) $$\rightarrow$$ (iv); (D) $$\rightarrow$$ (i)

(A) $$\rightarrow$$ (i); (B) $$\rightarrow$$ (ii); (C) $$\rightarrow$$ (iii); (D) $$\rightarrow$$ (iv)

Solution

Question 2

I, II

I, III

II, III

III, IV

Solution

Question 3

TCCGAACT

TACGTAGT

TACGAATC

TACGAACT

Solution

Question 4

Cytosine

Adenine

Thymine

Guanidine

Solution

Question 5

monosaccharide

disaccharide

trisaccharide

polysaccharide

Solution

Question 6

Glucose and Fructose

Glucose and Galactose

Glucose and Arabinose

Lactose and Maltose

Solution

Question 7

Fructose

Glucose

Starch

Cellulose

Solution

Question 8

E

K

H

C

Solution

Question 9

Vitamin A

Vitamin C

Pyridoxine

Vitamin B - Complex

Solution

Question 10

Melitriose

Stachyose

Fructose

Rhamnose

Solution

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