Biomolecules-2 Set 2 MCQs

Q1 | What does the following diagram show?

Quaternary structure of protein

polypeptide chain

Molecule structure of protein

Secondary structure of protein

Q2 | The classification of the protein in two types depends on

Structure and function

Types of amino acid

Numbers of amino acid

none above

Q3 | Nuclein separated in to which components?

Protein + chromosome

Protein + Nucleic acid

Nucleic acid + nitrogen base

Nuceicoside + Nucleotide

Q4 | Which one of the following is the major component of chromosome?

Nucleic acid

Protein

Nitrogen base

Lipid

Q5 | Nucleic acid contains which group of molecules in their constitution?

C, H, N and S

C, H, O, N and S

C, H, N, O, and P

C, H, N and O

Q6 | Nucleic acids means

A major components of chromosomes

Polynucleotide of structural units known as nucleotides

Small gene carrying bodies in the nuclei of complex cells

Both a & b

Q7 | Which are the structural units of DNA?

Nitrogen base

Pentose sugar

nucleotide

phosphoric acid

Q8 | Which one group is the subunit of nucleotide?

Pentose sugar, nitrogen

Purina, pyrimidine, phosphorus

Nitrogen base, sugar

pentose sugar, Nitrogen base , phosphoric acid

Q9 | Which of the following will be characteristically different in different living organism?

Protein

Nucleic acid

Enzyme

Carbohydrate

Q10 | Which one is not a polymer?

ATP

Hemoglobin

Nucleotide

Enzyme

Q11 | The illustration given below is which nitrogen base:

Uracil

Cytosine

Thymine

Ribose

Q12 | The illustration given below is which nitrogen base:

Guanine

Cytosine

Uracil

Adenine

Q13 | The following diagram represents the nitrogenous bases of nucleic acid Molecules Identify the correct combination:

A= Guanine , B= Uracil

A= Adenine , B= Thymine

A= Cytosine , B= Adenine

A= thymine , B= Guanine

Q14 | What is Ribonucleoside?

Ribose + Nucleic acid

Ribose + Nitrogen base

Ribose + Phosphate

Ribose + Adenine

Q15 | What ‘A’ and ‘B’ indicates in the given diagram?

A= CH2OH, B= OH

A= CH2OH, B= H

A= CH, B= OH

CH2, B= H

Q16 | Which two sequential carbon number of nucleotides join through phosphodiaster bond?

3 and 5

1 and 4

1 and 6

2 and 5

Q17 | What is Guanine?

Purine

Hormone

Enzyme

Pyrimidine

Q18 | Ribonucleoside formed from ribonucleotide while:-

It made from sugar

It made from nitrogen base

It made from phosphate

a, b, c all above

Q19 | DNA is localized in which cell organelle?

Vacuoles

Lysosomes

Golgi apparatus

Nucleus, mitochondria, chloroplast

Q20 | A DNA stand is directly involved in the synthesis of all the following except –

Another DNA Stand

t- RNA

m-RNA

Protein

Q21 | Nucleic acids were discovered by whom?

Crick

Wilkinson

meischer

Watson

Q22 | Nucleic acids are related with which activity?

Digestion

Respiration

Reproduction

Heredity

Q23 | What ‘A’ and ‘B’ indicates in the given structure?

A= CH2, B= N

A= (>C=0), B= NH

A= NH, B= NH

A=NH2, B=NH

Q24 | Chemically DNA differs from RNA by:

Thymine and deoxyribose present in DNA and Uracil and ribose in RNA

Uracil and deoxyribose in DNA and thymine and ribose in RNA

Deoxyribose in DNA and ribose in RNA

Two nucleotide in DNA and one nucleotide in RNA

Q25 | Nucleic acids are polymers of which molecules?

Nucleosides

Nucleotides

Polypeptides

polysomes