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Biological Molecules Online Exam Quiz

Important questions about Biological Molecules. Biological Molecules MCQ questions with answers. Biological Molecules exam questions and answers for students and interviews.

Lipids provide insulation against cold and hot weather to exoskeleton of insects in form of


A : a. cutin

B : b. waxes

C : c. cholesterol

D : d. oil

On hydrolysis, sucrose gives one glucose and one


A : a. fructose

B : b. maltose

C : c. lactose

D : d. ribose

A large and important group of compound which can be made by repetition of simple isoprenoid units, is called


A : a. Terpenoids

B : b. steroids

C : c. carotenoids

D : d. terpenses

Scientist who first isolated nuclei of pus cells was


A : a. F.Sanger

B : b. M.steward

C : c. F.Miescher

D : d. A.Einstein

Tetroses are not very common, they are found rare in nature and in few


A : a. viruses

B : b. bacteria

C : c. plants

D : d. animals

NAD is an abbreviation for


A : a. Nicotine Abusive Department

B : b. Nicotine Avoid Directions

C : c. Nicotinamide adenine dinucleotide

D : d. Nicotinamide dinucleotide

A protein which act as a carrier and transport oxygen and carbon dioxide in human body is known as


A : a. hemoglobin

B : b. immunoglobulin

C : c. lipids

D : d. antibody

Greater number of carbon atoms in chain results in higher


A : a. melting point

B : b. boiling point

C : c. freezing point

D : d. stability

Number of nucleotide in a tRNA chain length is


A : a. 70-90

B : b. 75-95

C : c. 70-80

D : d. 75-90

Main sources of carbohydrates are


A : a. milk

B : b. water

C : c. green plants

D : d. proteins

Sequence if amino acids in DNA can be determined by order of


A : a. mRNA

B : b. tRNA

C : c. rRNA

D : d. nucleotides

Phosphoric acid can be joined with OH group of a pentose sugar with help of


A : a. phosphodiester bond

B : b. ionic bond

C : c. covalent bond

D : d. ester linkage

Proteins are classified into two groups, i.e. Fibrous proteins and


A : a. glandular proteins

B : b. globular proteins

C : c. Enzymatic proteins

D : d. Storage proteins

RNA is synthesized from DNA by process of


A : a. translation

B : b. transcription

C : c. transgenic

D : d. duplication

Anabolism and catabolism are types of


A : a. chemical reaction

B : b. chain reactions

C : c. metabolism

D : d. complex reactions

Chemical composition of an acylglycerols is esters of fatty acids and


A : a. bases

B : b. alcohol

C : c. water

D : d. acids

Microorganisms secrete an enzyme which helps in digestion of cellulose known as


A : a. cellulase

B : b. catalase

C : c. sucrase

D : d. pepsin

Derivatives of phosphatidic acid, which are composed of glycerol, fatty acids and phosphoric acids are known as


A : a. phospholipids

B : b. acylghycerols

C : c. triglycerides

D : d. esters

Maurice Wilkins and Rosalind Franklin determine structure of DNA using technique called


A : a. X-ray Diffraction

B : b. X-ray Refraction

C : c. X-ray Reflection

D : d. Y-ray Refraction

Lipids which are fats and oils are lighter, than water therefore have a specific gravity of about


A : a. 0.6

B : b. 0.8

C : c. 0.9

D : d. 0.1

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