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Previous year question hub

Biochemistry and Molecular Biology - Life Sciences Previous Year Questions

Practice Biochemistry and Molecular Biology - Life Sciences previous year questions organised from real papers, with year-wise coverage and clear topic navigation.

20Papers
20Years
261Questions
1Topics

Biochemistry and Molecular Biology question pattern

Every graph below is calculated only from this selection.

Questions by year

Compare question counts across years.

Difficulty distribution

How the classified questions are distributed by difficulty.

Easy 138 52.9%
Medium 121 46.4%
Hard 2 0.8%

Question type distribution

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

MCQ 198 75.9%
Numerical Answer Type (NAT) 42 16.1%
MSQ 21 8%

Subject weightage

Top subjects by unique question coverage.

Life Sciences
261 Qs

Most asked topics

Top topics across the included previous year papers.

Biochemistry and Molecular Biology
261 Qs

Subtopic coverage

Top subtopics inside this exact selection.

Biomolecules and Molecular Information Flow
173 Qs
Metabolism, Enzymes and Hormones
88 Qs

Paper coverage

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

Life Sciences (XL) 2026
17 Qs
Life Sciences (XL) 2025
11 Qs
Life Sciences (XL) 2024
13 Qs
Life Sciences (XL) 2023
12 Qs
Life Sciences (XL) 2022
9 Qs
Life Sciences (XL) 2021
17 Qs
Life Sciences (XL) 2020
17 Qs
Life Sciences (XL) 2019
11 Qs
Life Sciences (XL) 2018
15 Qs
Life Sciences (XL) 2017
16 Qs
Life Sciences (XL) 2016
13 Qs
Life Sciences (XL) 2015
4 Qs
Life Sciences (XL) 2014
10 Qs
Life Sciences (XL) 2013
11 Qs
Life Sciences (XL) 2012
13 Qs
Life Sciences (XL) 2011
13 Qs
Life Sciences (XL) 2010
11 Qs
Life Sciences (XL) 2009
15 Qs
Life Sciences (XL) 2008
17 Qs
Life Sciences (XL) 2007
16 Qs

Browse by subtopics

Open a focused page built from the same verified paper data.

Biomolecules and Molecular Information Flow

Explore previous-paper coverage, trends and focused practice for Biomolecules and Molecular Information Flow.

173 questions20 papers20 years

Metabolism, Enzymes and Hormones

Explore previous-paper coverage, trends and focused practice for Metabolism, Enzymes and Hormones.

88 questions20 papers20 years

Included previous year papers

Newest papers appear first. Search these papers or sort by year and name.

Paper nameYearPDFAttempt
Life Sciences (XL) 20262026
17 questions in this view		2026
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Life Sciences (XL) 20252025
11 questions in this view		2025
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Life Sciences (XL) 20242024
13 questions in this view		2024
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Life Sciences (XL) 20232023
12 questions in this view		2023
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Life Sciences (XL) 20222022
9 questions in this view		2022
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Life Sciences (XL) 20212021
17 questions in this view		2021
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Official question paperOriginal authority-issued PDF Official Download Official answer keyOriginal authority-issued PDF Official Download
Life Sciences (XL) 20202020
17 questions in this view		2020
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20192019
11 questions in this view		2019
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20182018
15 questions in this view		2018
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20172017
16 questions in this view		2017
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20162016
13 questions in this view		2016
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20152015
4 questions in this view		2015
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20142014
10 questions in this view		2014
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20132013
11 questions in this view		2013
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20122012
13 questions in this view		2012
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20112011
13 questions in this view		2011
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20102010
11 questions in this view		2010
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20092009
15 questions in this view		2009
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Official documents
Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20082008
17 questions in this view		2008
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Official question paperOriginal authority-issued PDF Official Download
Life Sciences (XL) 20072007
16 questions in this view		2007
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Official question paperOriginal authority-issued PDF Official Download

Sample previous year questions

A varied preview from the papers represented in this selection, with every available option.

1
2007 · Life Sciences · Biochemistry and Molecular Biology · Biomolecules and Molecular Information Flow
Life Sciences (XL) 2007
Deamination of cytosine produces
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2
2008 · Life Sciences · Biochemistry and Molecular Biology · Biomolecules and Molecular Information Flow
Life Sciences (XL) 2008
Identify W and X
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3
2009 · Life Sciences · Biochemistry and Molecular Biology · Biomolecules and Molecular Information Flow
Life Sciences (XL) 2009

Human DNA (3 × 106 Kb) is replicated in 5 hrs at a rate of 1 Kb/min. The number of origins of replication utilized are

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4
2010 · Life Sciences · Biochemistry and Molecular Biology · Biomolecules and Molecular Information Flow
Life Sciences (XL) 2010

A DNA-binding motif is

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5
2011 · Life Sciences · Biochemistry and Molecular Biology · Biomolecules and Molecular Information Flow
Life Sciences (XL) 2011
Which one of the following DOES NOT inhibit protein biosynthesis?
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6
2012 · Life Sciences · Biochemistry and Molecular Biology · Metabolism, Enzymes and Hormones
Life Sciences (XL) 2012
Which one of the following compounds does NOT block electron transport?
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