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Test: Biomolecules Level - 2 - Chemistry MCQ


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30 Questions MCQ Test - Test: Biomolecules Level - 2

Test: Biomolecules Level - 2 for Chemistry 2024 is part of Chemistry preparation. The Test: Biomolecules Level - 2 questions and answers have been prepared according to the Chemistry exam syllabus.The Test: Biomolecules Level - 2 MCQs are made for Chemistry 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Biomolecules Level - 2 below.
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Test: Biomolecules Level - 2 - Question 1

The decreasing order of isoelectric point for the following a-amino acids is:
(I) Lysine            (II) Alanine         (III) Glutamic acid

Detailed Solution for Test: Biomolecules Level - 2 - Question 1

I. Lysine: pI = 9.87

II. Alanine: pI = 6.02

III. Glutamic acid: pl = 3.22

Test: Biomolecules Level - 2 - Question 2

In the reaction sequence 

The major product, X and Y respectively, are:

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Test: Biomolecules Level - 2 - Question 3

Which of the following is a monosaccharide:

Test: Biomolecules Level - 2 - Question 4

Sucrose on hydrolysis gives:

Test: Biomolecules Level - 2 - Question 5

Which gives red colour with Fehling’s solut ion:

Test: Biomolecules Level - 2 - Question 6

Glucose when heated with CH3OH in presence of dry HCl gas, α-and β-methyl glucosides are formed. This is because it contains:

Test: Biomolecules Level - 2 - Question 7

Which of the following carbohydrates is used in silvering of mirrors:

Test: Biomolecules Level - 2 - Question 8

Starch undergoes hydrolysis in presence of mineral acids to:

Test: Biomolecules Level - 2 - Question 9

When glucose is reacted with bromine water, the major product is:

Test: Biomolecules Level - 2 - Question 10

A certain compound gives negative test with ninhydrin and positive test with Benedict’s solution, the compound is:

Test: Biomolecules Level - 2 - Question 11

A disaccharide which give only glucose on hydrolysis is:

Test: Biomolecules Level - 2 - Question 12

Biuret test is not given by:

Test: Biomolecules Level - 2 - Question 13

The pH value of a solution in which a polar amino acid does not migrate under the influence of electric field is called:

Test: Biomolecules Level - 2 - Question 14

Which of the following amino acids is not optically act ive:

Test: Biomolecules Level - 2 - Question 15

Hydrolysis of sucrose is called:

Test: Biomolecules Level - 2 - Question 16

Which of the following bases in not present in DNA:

Test: Biomolecules Level - 2 - Question 17

Which one of the following is not present in RNA:

Test: Biomolecules Level - 2 - Question 18

At the isoelectric po int, amino acids are present as:

Test: Biomolecules Level - 2 - Question 19

Glucose and fructose can also be distinguished by:

Test: Biomolecules Level - 2 - Question 20

Which of the following does not show mutarotation:

Test: Biomolecules Level - 2 - Question 21

Glucose and mannose are:

Test: Biomolecules Level - 2 - Question 22

There are 20 naturally occurring amino acids. The maximum number of tripeptides that can be obtained is:

Detailed Solution for Test: Biomolecules Level - 2 - Question 22

 

Naturally occurring amino acids are 20. Hence, number of possible tripeptides

= 20= 8000

Test: Biomolecules Level - 2 - Question 23

Lactose is made of:

Test: Biomolecules Level - 2 - Question 24

The beta and alpha glucose have different specific rotations. When either is dissolved in water, their rotation changes until the same fixed value results. This is called:

Test: Biomolecules Level - 2 - Question 25

Fructose reduces Tollen’s reagent due to:

Test: Biomolecules Level - 2 - Question 26

Which of the following is a heterocyclic amino acid:

Detailed Solution for Test: Biomolecules Level - 2 - Question 26

- Tryptophan is the correct answer because:
- It contains an indole ring, which is a heterocyclic structure.
- A heterocyclic compound has a cyclic structure with at least two different elements as members of its ring(s).
- Phenylalanine, glycine, and alanine do not have heterocyclic rings:
- Phenylalanine has a benzene ring, which is not heterocyclic.
- Glycine and alanine have no rings in their structures.

Test: Biomolecules Level - 2 - Question 27

The sugar moiety present in RNA molecule is:

Test: Biomolecules Level - 2 - Question 28

In transfer RNA anticodon for the messenger RNA codon G-C-A is:

Test: Biomolecules Level - 2 - Question 29

Which of the following structures represents the peptide chain:

Test: Biomolecules Level - 2 - Question 30

RNA differ from DNA in respect of a base:

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