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This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Biomolecules-2 Set 6

Q1 | Which one is not a nucleotide? [AFMC 1998]
  • Adenine
  • Guanine
  • Thymine
  • Lysine
Q2 | Which one is a molecule of ATP? [C.B.S.C. PMT 2000]
  • Nucleosome
  • Nucleoside
  • nucleotide
  • deoxyribose
Q3 | t-RNA is a polymer of: [MP PMT 1997]
  • Deoxyribonucleoside
  • ribonucleoside
  • Ribonucleotide
  • deoxyribotide
Q4 | Which one is Purine base of RNA? [C.B.S.E. PMT 1996]
  • Guanine
  • Thymine
  • Uracil
  • Cytosine
Q5 | Enzymes are formed by conjunction of which molecule? [AFMC 1994]
  • Fatty acid
  • glucose
  • amino acid
  • carbon
Q6 | Co-enzyme means [B.H.U. 1997]
  • Metal
  • Vitamin
  • Inorganic compound
  • a & c both
Q7 | Enzymes in boiling water [CPMT1995]
  • Destroyed
  • Denatured
  • Uneffective
  • Inactive
Q8 | Which one is the contractile protein [CBSE.PMT 1998]
  • Collagen
  • globular
  • tropomycin
  • keratin
Q9 | How many nucleotide present in DNA molecule which consist pair of 2000 N2 base? [MP.PMT 1994]
  • 2,000
  • 5,000
  • 10,000
  • 40,000
Q10 | Which one is not gain by the hydrolysis of nucleoside? [DPMT 1996]
  • Purine
  • Pentose sugar
  • Phosphoric acid
  • Pyrimidine
Q11 | Enzyme by natured: [CET chd 1998]
  • vitamin
  • carbohydrate
  • polypeptide
  • Fatty acid
Q12 | The pair of nitrogen base in DNA is conjugated with [PB PMT 1997]
  • Disulphide bond
  • Hydrogen bond
  • Peptide bond
  • Glycosidic bond
Q13 | The prosthetic group which is in the structure of enzyme [Manipal PMT 1997]
  • Loosely combining
  • tightly binding
  • It contain organic or inorganic structure
  • only inorganic
Q14 | Enzyme speed up rate of reaction by [C.B.S.E. 2000]
  • Combining with product
  • Forming reaction product complex
  • Changing equilibrium of reaction
  • Covering activation energy
Q15 | The catalytic efficiency of two different enzymes can be compared by the
  • The Km value
  • The PH qutimum value
  • Formation of the product
  • Molecular size of the enzyme
Q16 | Which of the following cell organelles is rich in catabolic enzyme [PMT 2007]
  • Ribosome
  • chloroplast
  • Mitochondria
  • Golgicomplex
Q17 | Enzyme which help in electron transfer are: [B.H.U. 1998]
  • Cytochrome
  • Isomerase
  • Protease
  • All of above
Q18 | The enzyme which fixes CO2 in C4 plant is [C.B.S.E. 2000]
  • Hydrogenase
  • PEP carboxyl ase
  • Reductase
  • RuBp carboxylase
Q19 | Enzyme involved in hydrolysis of starch to maltose is called: [PMT 1999]
  • Sucrase
  • Amylase
  • Lactase
  • Maltase
Q20 | In which of the following industrial areas biotechnology is applicable?
  • Health care
  • Environment
  • Agriculture
  • all of the above
Q21 | Due to what food supply has increased during green revolution?
  • use of chemical
  • use of biochemicals
  • use of photochemicals
  • use of agrochemicals
Q22 | The organizations whose genetic material has been altered using genetic engineering is called as -
  • Genetically mutant organism
  • Genetically modern organism
  • Genetically modified organism
  • Genetically transferred organism.
Q23 | Full form of GMO is -
  • Genetically mutant organism
  • Genetically modern organism
  • Genetically modified organism
  • Genetically transferred organism
Q24 | Which of the following is responsible for causing disease in plants?
  • viru
  • pesticide
  • Herbicide
  • all the above
Q25 | Bt stands for -
  • Biotechnology
  • Bacteria tolerant
  • Bacillus thuringiensis
  • Bollworm toxin