Biology · Chemistry
Biomolecules and Enzymes
1,432 Questions
This topic focuses on biomolecules, specifically proteins, enzymes, and amino acids. It includes questions on enzyme structures, protein folding, and catalysis. These concepts are crucial for medical and biology competitive exams.
Enzyme catalysisProtein structuresAmino acid synthesisPolypeptide chainsBiomolecule properties
Biomolecules and Enzymes Questions
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Thermus aquaticus
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Taq polymerase
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Cellulase
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Lysozyme
B
Correct answer
Explanation
Correct..The enzyme is used in PCR as it can withstand high temperature.
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Antibody
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Insulin
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Pepsin
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NAD+
D
Correct answer
Explanation
Antibodies, insulin, and pepsin are proteins. NAD+ (Nicotinamide adenine dinucleotide) is a coenzyme, not a protein.
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Pepsin
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Carotene
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Keratin
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Progesterone
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Saccharopine
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Allysine
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α-Aminoadipic acid
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α-Ketoadipic acid
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Isovaleryl-coenzyme A
A
Correct answer
Explanation
Saccharopine is an intermediate in the metabolism of amino acid lysine.
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Asparagines
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Cystine
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Glutamine
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Glycine
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Cysteine
D
Correct answer
Explanation
It acts as a neurotransmitter and plays a vital role in healing wounds.
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Phosphoprotein
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Glycoprotein
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Lipoprotein
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Chromoprotein
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Nucleoprotein
B
Correct answer
Explanation
Glycoproteins contain carbohydrates as the prosthetic group.
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Gelsolin
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Gamma-catenin
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Delta-2-catenin
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Alpha-catenin
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Beta-catenin
B
Correct answer
Explanation
This protein is a member of the catenin family.
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neuroglobin
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myoglobin
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cytoglobin
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haemoglobin
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chlorocruorin
E
Correct answer
Explanation
Chlorocruorin is an oxygen-binding hemeprotein present in the blood plasma of many annelids.
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The two-dimensional structure of the enzyme determines the appearance of the active site.
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No two enzymes are alike.
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The arrangement of amino acids determines the enzyme's function.
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Enzymes are regarded as the environmentally friendly solution to industrial problems.
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Enzymes neither live nor die.
A
Correct answer
Explanation
The three-dimensional structure of the enzyme determines the appearance of the active site.
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Only A
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Only B
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Only B and D
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Only D
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Only A, C and D
E
Correct answer
Explanation
This option is correct because carbonic anhydrase does not hydrolyse protein to α-amino acids, but chymotripsin, trypsin and pepsin all hydrolyse protein into α-amino acids.
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bacillus subtilis
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mutants of Ecoli
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brevibacterium
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corynebacterium glutamicum
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pseudomonas
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Antibodies
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Fibrinogen
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Thrombin
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Serum albumin
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None of the above
D
Correct answer
Explanation
It is a transport protein in blood.
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Phenylalanine : F
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Tyrosine : Y
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Asparagine : N
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Glutamic acid : E
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Aspartic acid : C
E
Correct answer
Explanation
Yes, it is correct. Single-letter codes used by FASTA for aspartic acid is D.
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PDBsum
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BMRB
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MMDB
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FSSP
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RasMol
B
Correct answer
Explanation
Yes, it is the correct answer. Biological Magnetic Resonance Bank (BMRB) is a database for NMR spectroscopy information on biomolecules hosted at the University of Wisconsin at Madison.
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Building Blocks
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as Precursors
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as Source of Sulphur
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They transport oxygen throughout the body
D
Correct answer
Explanation
This is not a function of protein.