Question # 1

Pick out the phospholipid from the following

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Phosphatidylserine

Lecithin

Phosphatidylcholine

All

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

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1

2

Both

3

RNA and Proteins are components of

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Chromosomes

Receptors

Secretions

Ribosome

Secondary structure is the ultimate structural level of which of the following proteins?

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Trypsin

Insulin

Keratin

Glucose

Glycine can be converted to alanine by

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Addition of carbon and 2 hydrogens

Removal of carbon and 2 hydrogens

Addition of Methyl group

Removal of hydrogen and 2 carbons

Nucleotide is to ___ as amino acid is to ___

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Nucleic acids, Lipids

Nucleic acids, Proteins

Proteins, Lipids

Lipids, proteins

Highest number of carbons are present in

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Butyric acid

Acetic acid

Palmitic acid

Oleic acid

Pick a non-reducing sugar

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Lactose

Sucrose

Glucose

Fructose

Which of the following is not a homopolysccharide?

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Starch

Chitin

Pectin

Glycogen

Both Glycoprotein and glycolipids are components of

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Plant Cell walls

Algal Cell Walls

Fungal Cell Wall

Biological Membranes

Lipids store double amount of energy as compared to same amount of carbohydrates, because of

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Higher proportion of C-H bonds

Higher proportion of C-N bonds

Higher proportion of C-O bonds

Lower proportion of C-O-P bonds

Which part of amino acid give its physical and chemical properties

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Amino group

Carboxylic group

Alpha carbon

Alkyl group

When Fructose form ring structure, It is

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6 Cornered

5 cornered

4 cornered

3 cornered

In deoxyribose, oxygen is removed from carbon number

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1

2

3

4

The next to simplest amino acid is

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Alanine

Glycine

Serine

Glutamine

Chemical formula of pentose sugar present in DNA

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C₅H₉O₅

C₅H₁₀O₅

C₅H₁₀O₄

None

The simplest mono saccharide containing keto group is:

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Glyceraldehyde

Glucose

Dihydroxyacetone

Ribose

The Organic biomolecule which is widespread in bacterial animal and plant cells is

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Wax

Glucose

Acyl glycerol

Phospholipids

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

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

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Primary

Secondary

Tertiary

Quaternary

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MDCAT Biology Chapter 3 Biological Molecules Online Test MCQs With Answers

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