Free Protein Metabolism practice for NEET PG and INI-CET Biochemistry, with a written explanation on every question.
6 questions · Free explanations
Showing 1–6 of 6 questions
Q1 · Urea Cycle
NEET PGMediumExplanation
The urea cycle occurs in the liver, partly in mitochondria and partly in cytoplasm, converting toxic ammonia to urea for excretion. Enzyme defects cause hyperammonaemia and encephalopathy.
Q2 · Transamination
MediumExplanation
Pyridoxal phosphate, from vitamin B6, is the coenzyme for aminotransferases such as AST and ALT, transferring amino groups between amino acids and keto acids.
Q3 · Essential Amino Acids
EasyExplanation
Lysine is essential and must be obtained from the diet. Others include leucine, isoleucine, valine, threonine, methionine, phenylalanine, tryptophan and histidine. Alanine, glutamate and serine are non-essential.
Q4 · Collagen Synthesis
HardExplanation
Vitamin C, or ascorbate, is a cofactor for prolyl and lysyl hydroxylases, essential for stable collagen triple-helix formation. Deficiency, or scurvy, causes fragile collagen, poor wound healing and bleeding gums.
Q5 · Protein Structure
MediumExplanation
Secondary structure refers to local folding patterns such as the alpha-helix and beta-sheet, stabilised by hydrogen bonds. Primary is the amino-acid sequence, tertiary is the overall three-dimensional fold and quaternary is the assembly of subunits.
Q6 · Nitrogen Balance
EasyExplanation
Negative nitrogen balance means nitrogen loss exceeds intake, reflecting net protein catabolism as seen in starvation, trauma, sepsis or severe illness. Positive balance occurs during growth, pregnancy and recovery.
Protein Metabolism sits within Biochemistry, which carries the same syllabus in both exams. This set runs to 6 questions, each tagged Easy, Medium or Hard, 1 of them at Hard, and 1 drawn from previous-year papers.
Answer first, then read the explanation even on the ones you got right — the reasoning is where Protein Metabolism marks are actually won, and it is what separates a recalled fact from a question you can solve in a new form. Once the Easy set feels comfortable, filter to Hard to find the gaps Biochemistry examiners keep returning to.
FAQ
Yes. Every question and explanation in this Protein Metabolism set is free and open — no login, no form and no payment. The explanation appears the moment you answer.
Protein Metabolism sits within Biochemistry, which appears in the same form in both syllabuses. Metabolism, enzymes and molecular biology, distilled to the pathways and deficiency states that repeat in previous year papers.
No. No account, no password, no OTP. Answer in the browser and your answers stay on your device for the session.