Milestones in Biochemistry

Biochemistry

A collection of multiple-choice questions focusing on significant historical discoveries and verified events in the field of biochemistry.

history biochemistry discovery science

10 Questions Medium Ages 16+ Apr 22, 2026

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This study set covers Biochemistry through 10 practice questions. A collection of multiple-choice questions focusing on significant historical discoveries and verified events in the field of biochemistry. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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1 Which scientist is credited with the first isolation and identification of urea from urine, a pivotal step in establishing biochemistry as a distinct field?

A Antoine Lavoisier
B Friedrich Wöhler
C Jöns Jacob Berzelius
D Louis Pasteur

2 The discovery of the double helix structure of DNA by Watson and Crick in 1953 was heavily reliant on the X-ray diffraction data produced by which other scientists?

A Linus Pauling and Robert Corey
B Rosalind Franklin and Maurice Wilkins
C Erwin Chargaff and Erwin Negelein
D Arthur Kornberg and Severo Ochoa

3 Who proposed the 'Lock and Key' model for enzyme-substrate interaction, a fundamental concept in understanding enzyme catalysis?

A Emil Fischer
B James B. Sumner
C Hans Krebbs
D Linus Pauling

4 The identification of the citric acid cycle (also known as the Krebs cycle) was a major breakthrough in understanding cellular respiration. Who is primarily associated with this discovery?

A Hans Krebbs
B Fritz Lipmann
C Albert Szent-Györgyi
D Otto Warburg

5 Which biochemist's work on the chemical basis of nerve impulse transmission, particularly the role of acetylcholine, earned him a Nobel Prize?

A Otto Loewi
B Henry Dale
C Bernard Katz
D Wilhelm Feldberg

6 The synthesis of urea from inorganic compounds by Friedrich Wöhler in 1828 challenged the prevailing vitalism theory. This synthesis is considered a landmark event because it:

A Proved the existence of enzymes in living organisms.
B Demonstrated that organic compounds could be synthesized in a laboratory.
C Isolated the first antibiotic.
D Discovered the genetic code.

7 The discovery of messenger RNA (mRNA) and its role in protein synthesis is largely attributed to the work of:

A Francis Crick and James Watson
B Marshall Nirenberg and Heinrich Matthaei
C Arthur Kornberg and Severo Ochoa
D Rosalind Franklin and Maurice Wilkins

8 Who was the first to crystallize an enzyme (urease) and demonstrate that proteins could possess catalytic activity, challenging the notion that enzymes were not proteins?

A Emil Fischer
B James B. Sumner
C Friedrich Miescher
D Fritz Lipmann

9 The discovery of the chemical structure of steroids, including cholesterol, and their relationship to hormones was significantly advanced by the research of which Nobel laureate?

A Linus Pauling
B Adolf Butenandt
C John Kendrew
D Max Perutz

10 In the early 20th century, which scientist pioneered the use of chromatography for the separation and analysis of biomolecules, a technique that revolutionized biochemical research?

A Marie Curie
B Mikhail Tsvet
C Theodor Svedberg
D Arne Tiselius

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