Biomolecules MCQs | Biomolecules Very Short Questions and Answers

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Questions
1 Ribosomes are composed of
A DNA and RNA
B RNA and proteins
C DNA and Proteins
D RNA only

Answer:RNA and proteins
2 Which particular nitrogenous base is present in DNA and not in RNA?
A Adenine
B Thymine
C Uracil
D Cytosine

Answer: Thymine
3 Which monomer unit after polymerization forms proteins?
A Monosaccharides
B Nucleotides
C Fatty acids
D Amino acids

Answer:Amino acids
4 Number of fatty acid residues found in one molecule of fat is:
A 1
B 2
C 3
D 4

Answer:3
5 An enzyme that brings about structural changes of a compound without altering its molecular weight is:
A Diastase
B Ligase
C Lyase
D Isomerase

Answer: Isomerase
6 Which is the most abundant enzyme on the earth?
A Catalase
B Invertase
C Rubisco
D Nitrogenas

Answer: Rubisco
7 An organic substance bound to an enzyme and essential for its activity is called:
A coenzyme
B holoenzyme
C apoenzyme
D isoenzyme

Answer: coenzyme
8 The scientist who coined the term enzyme is:
A Kuhne
B Berzilius
C Bloor
D Sumner

Answer:Kuhne
9 Which of the following does not contain DNA:
A Sperm
B Ovum
C Mature RBCs
D Chloroplast

Answer:Mature RBCs
10 Cytoskeleton is made up of:
A Cellulosic microfibrils
B Proteinaceous filaments
C Calcium carbonate filaments
D callose deposits

Answer:Proteinaceous filaments
11 An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell shape is called:
A thylakoid
B endoplasmic reticulum
C plasmalemma
D cytoskeleton

Answer:cytoskeleton
12 The plasma memebrane consists mainly of:
A proteins embedded in a carbohydrate bilayer
B phospholipids embedded in a protein bilayer
C proteins embedded in a phospholipid bilayer
D proteins embedded in a polymer of glucose molecules

Answer:proteins embedded in a phospholipid bilayer
13 Which biomolecule is distributed more widely in a cell?
A Chloroplast
B RNA
C DNA
D Spaherosomes

Answer:RNA
14 Which is a reducing sugar?
A Galactose
B Gluconic acid
C Sucrose
D β-methyl galactosidase

Answer:Galactose
15 Most abundant RNA in the cell
A rRNA
B mRNA
C tRNA
D tRNA threonine

Answer:rRNA

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