Biology · Chemistry
Biomolecules and Enzymes
1,501 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
-
Asparagines
-
Cystine
-
Glutamine
-
Glycine
-
Cysteine
D
Correct answer
Explanation
It acts as a neurotransmitter and plays a vital role in healing wounds.
-
Phosphoprotein
-
Glycoprotein
-
Lipoprotein
-
Chromoprotein
-
Nucleoprotein
B
Correct answer
Explanation
Glycoproteins contain carbohydrates as the prosthetic group.
-
Atropine
-
Flavonoids
-
Phytic acid
-
Gossypol
-
Carotenoids
B
Correct answer
Explanation
Flavonoids are also known as vitamin P or citrin.
-
Gelsolin
-
Gamma-catenin
-
Delta-2-catenin
-
Alpha-catenin
-
Beta-catenin
B
Correct answer
Explanation
This protein is a member of the catenin family.
-
neuroglobin
-
myoglobin
-
cytoglobin
-
haemoglobin
-
chlorocruorin
E
Correct answer
Explanation
Chlorocruorin is an oxygen-binding hemeprotein present in the blood plasma of many annelids.
-
The two-dimensional structure of the enzyme determines the appearance of the active site.
-
No two enzymes are alike.
-
The arrangement of amino acids determines the enzyme's function.
-
Enzymes are regarded as the environmentally friendly solution to industrial problems.
-
Enzymes neither live nor die.
A
Correct answer
Explanation
The three-dimensional structure of the enzyme determines the appearance of the active site.
-
Only A
-
Only B
-
Only B and D
-
Only D
-
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.
-
bacillus subtilis
-
mutants of Ecoli
-
brevibacterium
-
corynebacterium glutamicum
-
pseudomonas
-
Antibodies
-
Fibrinogen
-
Thrombin
-
Serum albumin
-
None of the above
D
Correct answer
Explanation
It is a transport protein in blood.
-
Only P and Q
-
Only P and R
-
Only P and S
-
Only Q and R
-
Only Q and S
B
Correct answer
Explanation
It is correct. Both P and R are enzyme database.
REBASE is a database of information about restriction enzymes and DNA methyltransferases.
BRENDA (BRaunschweig ENzyme DAtabase) is an enzyme information system representing one of the most comprehensive enzyme repositories.
-
Phenylalanine : F
-
Tyrosine : Y
-
Asparagine : N
-
Glutamic acid : E
-
Aspartic acid : C
E
Correct answer
Explanation
Yes, it is correct. Single-letter codes used by FASTA for aspartic acid is D.
-
Building Blocks
-
as Precursors
-
as Source of Sulphur
-
They transport oxygen throughout the body
D
Correct answer
Explanation
This is not a function of protein.
-
Albumins
-
Globulins
-
Sclero-proteins
-
Lipo-proteins
D
Correct answer
Explanation
It is an example of conjugated proteins.
-
Glyco-proteins
-
Chromo-proteins
-
Lipo-proteins
-
Nucleo-proteins
B
Correct answer
Explanation
Chromo-proteins are pigmented proteins, e.g., haemoglobin (red), haemocyanin (blue) and chlorocruorin (green).
-
Simple Proteins
-
Conjugated Proteins
-
Derived Proteins
-
Structural Proteins
A
Correct answer
Explanation
These are naturally occurring proteins which yield only amino acids or their derivatives on hydrolysis. Examples are albumins, globulins and scleroproteins.