Question # 1

RNA and Proteins are components of

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Chromosomes

Receptors

Secretions

Ribosome

Pick up ester bond present in nucleotide

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P-O-C

C-O-C

N-O-C

S-O-C

Most of the proteins are composed of _____ types of amino acids

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170

150

25

20

In deoxyribose, oxygen is removed from carbon number

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1

2

3

4

Monosaccharides are major component of

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DNA, ATP, RuBP, Lecithin

DNA, NAD, Insulin

DNA, NAD, ATP, RuBP

DNA, RNA, Myosin

Which of the following does not contain peptide bond

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Hemoglobin

Myoglobin

Insulin

Cutin

Highest number of carbons are present in

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Butyric acid

Acetic acid

Palmitic acid

Oleic acid

Which part of amino acid give its physical and chemical properties

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Amino group

Carboxylic group

Alpha carbon

Alkyl group

In a phospholipid molecule, fatty acid is attached to the carbon number_____ of glycerol.

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1

2

Both

3

Pick the odd one

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Cellulose

Galactose

Agar

Pectin

What is the theoretical number of chemically different dipeptide that can be made from 2 different amino acids

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1

2

4

8

Chemical formula of pentose sugar present in DNA

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C₅H₉O₅

C₅H₁₀O₅

C₅H₁₀O₄

None

Both Glycoprotein and glycolipids are components of

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Plant Cell walls

Algal Cell Walls

Fungal Cell Wall

Biological Membranes

Pick up the example of a dinucleotide:

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ATP

GTP

ADP

NAD

Which level of protein structure is responsible for maintenance of helix shape of an enzyme

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Primary

Secondary

Tertiary

Quaternary

The next to simplest amino acid is

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Alanine

Glycine

Serine

Glutamine

In tertiary structure, presence of hydrophilic amino acids at the surface of proteins and hydrophobic amino acids buried inside, indicate

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Nature of bonding

Function of protein

Nature of medium

Shape of protein

In a phospholipid molecule, phosphoric acid is attached to the carbon number_____ of glycerol.

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1

2

3

4

F. Sanger was the first scientist who determined the ___ structure of a protein molecule

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Primary

Secondary

Tertiary

Quaternary

Pick a non-reducing sugar

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Lactose

Sucrose

Glucose

Fructose

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MDCAT Biology Chapter 3 Biological Molecules Online Test MCQs With Answers

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