WorksheetsAmino Acids and Enzymes Quiz
Total questions: 20
Worksheet time: 10mins
Which amino acid is deficient in phenylketonuria (PKU)?
Tyrosine
Tryptophan
Glycine
Alanine
Alkaptonuria is due to deficiency of which enzyme?
Phenylalanine hydroxylase
Homogentisate oxidase
Tyrosinase
DOPA decarboxylase
Which test is used to detect PKU in newborns?
Biuret test
Benedict’s test
Guthrie test
Rothera’s test
Which amino acid gives rise to serotonin?
Tyrosine
Glycine
Tryptophan
Methionine
What is the function of nitric oxide in the body?
Blood clotting
Muscle contraction
Vasodilation
Digestion
Which amino acid is both ketogenic and glucogenic?
Leucine
Lysine
Phenylalanine
Valine
Which coenzyme is required for transamination?
NAD+
FAD
Pyridoxal phosphate (PLP)
TPP
Which of the following is a sulfur-containing amino acid?
Leucine
Serine
Methionine
Glutamine
All are aromatic amino acids EXCEPT?
Tryptophan
Tyrosine
Phenylalanine
Valine
Which amino acid is involved in the synthesis of melanin?
Glycine
Tyrosine
Histidine
Proline
The active form of folic acid is
Folinic acid
Tetrahydrobiopterin
Tetrahydrofolate (THF)
SAM
Which of the following is a one-carbon donor?
Acetyl-CoA
Biotin
THF
NADH
Which of the following is a polyamine?
Spermine
Dopamine
Epinephrine
Creatine
Which amino acid is glucogenic?
Leucine
Lysine
Valine
None
Which of the following enzymes has isoenzymes?
Amylase
Creatine kinase (CK)
Acetylcholinesterase
Hexokinase
In competitive inhibition, the inhibitor
Competes with enzyme
Competes with substrate
Binds to allosteric site
Prevents enzyme synthesis
In Lineweaver-Burk plot, the slope is equal to
Km/Vmax
Vmax/Km
Vmax²
1/Km
Which vitamin is involved in the synthesis of coenzymes like NAD+?
Vitamin B1
Vitamin B2
Niacin (B3)
Vitamin C
Which enzyme is raised in myocardial infarction?
AST
ALT
Amylase
CK-MB
Zymogens are also called as
Isoenzymes
Holoenzymes
Inactive precursors
Coenzymes
