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Previous year question hub

Central Carbon and Lipid Metabolism - Metabolic Pathways and Associated Disorders - Life Sciences Previous Year Questions

Practice Central Carbon and Lipid Metabolism - Metabolic Pathways and Associated Disorders - Life Sciences previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

11Papers
11Years
11Questions
1Topics

Central Carbon and Lipid Metabolism question pattern

Every graph below is calculated only from this selection.

Questions by year

Year-wise coverage for Central Carbon and Lipid Metabolism. Each bar uses a separate theme-derived color.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 7 63.6%
Medium 4 36.4%

Question type distribution

MCQ, numerical, multiple-select and other formats found in these papers.

MCQ 9 81.8%
Numerical Answer Type (NAT) 1 9.1%
MSQ 1 9.1%

Subject weightage

Top subjects by unique question coverage.

Life Sciences
11 Qs

Most asked topics

Top topics across the included previous year papers.

Metabolic Pathways and Associated Disorders
11 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Central Carbon and Lipid Metabolism
11 Qs

Paper coverage

Question coverage for the most populated papers. Every active PYP paper remains listed below.

Life Sciences (XL) 2025
1 Qs
Life Sciences (XL) 2023
1 Qs
Life Sciences (XL) 2019
1 Qs
Life Sciences (XL) 2018
1 Qs
Life Sciences (XL) 2016
1 Qs
Life Sciences (XL) 2015
1 Qs
Life Sciences (XL) 2014
1 Qs
Life Sciences (XL) 2012
1 Qs
Life Sciences (XL) 2010
1 Qs
Life Sciences (XL) 2009
1 Qs
Life Sciences (XL) 2007
1 Qs

Included previous year papers

Newest papers appear first. Sort by year, question coverage or name.

PaperYear / sessionQuestions in this viewOpen
Life Sciences (XL) 202520251View paper
Life Sciences (XL) 202320231View paper
Life Sciences (XL) 201920191View paper
Life Sciences (XL) 201820181View paper
Life Sciences (XL) 201620161View paper
Life Sciences (XL) 201520151View paper
Life Sciences (XL) 201420141View paper
Life Sciences (XL) 201220121View paper
Life Sciences (XL) 201020101View paper
Life Sciences (XL) 200920091View paper
Life Sciences (XL) 200720071View paper

All Central Carbon and Lipid Metabolism previous year questions

Practice every matching question in batches of 20, with every available option.

1
2007 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2007
Which of the following enzymes convert glucose-6-phosphate to 6-phosphoglucono-δ-lactone in the Entner-Doudoroff pathway?
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2
2009 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2009
Which one of the following metabolic intermediates is involved in the biosynthesis of Phenylalanine and Tyrosine in bacteria ?
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3
2010 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2010

A mutant of E. coli grows normally on glucose or on glycerol but not on acetate. The most likely metabolic pathway that is defective in this mutant is

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4
2012 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2012
An E.coli mutant defective for an enzyme is unable to grow on acetate but grows on glycerol as the sole carbon source. Which ONE of the following enzymes is likely to be defective in this mutant?
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5
2014 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2014
Which ONE of the following combinations of products will result when 3 molecules of acetyl CoA is fed into TCA cycle?
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6
2015 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2015
A process in which fatty acids are shortened by two carbons at a time resulting in release of acetyl-CoA is known as
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7
2016 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2016
Which one of the following enzyme combinations allows some bacteria to utilize acetate through glyoxylate pathway?
(P) Isocitrate lyase (Q) Isocitrate dehydrogenase
(R) Succinyl CoA synthetase (S) Malate synthase
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8
2018 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2018
The number of NADP⁺ molecules required to completely oxidize one molecule of glucose to CO₂ through pentose phosphate pathway is ____ (correct to integer number).
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9
2019 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2019
Rubisco catalyzes conversion of ribulose 1,5-bisphosphate to
P. two molecules of stable 3-phosphoglycerate
Q. one molecule of 3-phosphoglycerate and one molecule of phosphoglycolate
R. one molecule of ribulose 5-phosphate
S. one molecule of ribose 5-phosphate
Choose only the correct combination
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10
2023 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2023

The correct sequence of metabolic intermediates in Krebs cycle is

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11
2025 · Life Sciences · Metabolic Pathways and Associated Disorders · Central Carbon and Lipid Metabolism
Life Sciences (XL) 2025

Which of the following reactions in plants is/are catalyzed by the malic enzymes?

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