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Molecular Biology Quizzes, Questions & Answers

Recent Molecular Biology Quizzes

Ultimate Molecular Biology Quiz

Questions: 80 | Attempts: 1408 | Last updated: Sep 2, 2025

Sample Question
Which of the following is not present in the core RNA polymerase?

B (Beta)

B' (Beta prime)

Sigma (o)

Both (Beta) and (sigma)

Molecular Biology (Chapter 1-5, 20-23)

Questions: 122 | Attempts: 669 | Last updated: Mar 22, 2025

Sample Question
Some genes located on the same chromosome do not show perfect linkage because?

They are too close together

The are interrupted by other genes

Crossover events occur between homologous genes

Some genes are deleted

Too many alleles are present

Molecular Biology Quiz: DNA Transcription, Translation, Replication

Questions: 10 | Attempts: 19766 | Last updated: Jan 21, 2025

Sample Question
DNA and RNA are different because:

DNA is only found in the nucleus, while RNA can travel anywhere in the cell.

DNA is double-stranded, while RNA is triple-stranded.

DNA uses Uracil while RNA uses Thymine.

DNA is made of four bases, while RNA is made of five bases.

None of the above

Ch.7-1 What Does DNA Look Like

Questions: 10 | Attempts: 478 | Last updated: Mar 21, 2025

Sample Question
Deoxyribonucleic acid or ________________ is the material that contains the information that determines the traits a living thing inherits.

Nucleotide

DNA

Thymine

Cytosine

Bio Test 3 (Part 1)

Questions: 11 | Attempts: 118 | Last updated: Feb 14, 2025

Sample Question
The significance of Fred Griffith's experiment in which he used two strains of Streptococcus pneumoniae is that

Harmless and pathogenic bacteria function differently in mice than in other organisms.

It demonstrated that harmless bacteria can become transformed into disease-causing bacteria by some association with pathogenic bacteria.

It established that pure DNA extracted from disease-causing bacteria transformed harmless strains into killer strains.

Dead cells lose their genetic information.

The genetic material is DNA, not protein.

Electrophoresis Blood Quiz Questions

Questions: 36 | Attempts: 176 | Last updated: Mar 21, 2025

Sample Question
While synthesizing a new blue pigment, a chemist noticesthat the new compound congregates between an aqueous(water) environment and a hydrophobic environment.When added to a mixture of oil and water, the pigmentcreates a blue ring around the droplets of oil. Which of thefollowing statements best describes this new pigment?

The pigment is amphipathic, having polar and nonpolar regions.

The pigment is probably hydrophobic and is attempting to bond with the oil.

The pigment is hydrophilic and will not form hydrophobic bonds with the oil.

The pigment is a polar molecule and is forming hydrogen bonds with both the water and oil molecules.

The pigment is neither polar or nonpolar, but is apolar.

Chapter 10 and 11

Questions: 12 | Attempts: 246 | Last updated: Mar 20, 2025

Sample Question
The study of heredity is...

Biology

Cellular Respiration

Photosynthesis

Substrate-Level Phosphorylative Molecular Biology with Enzyme Deficiency Analysis

None of the above

DNA And Rna Transcription, Translation And Transport Quiz

Questions: 28 | Attempts: 342 | Last updated: Oct 19, 2025

Sample Question
Pararetroviruse (Class VII) is DNA viruses which carry out reverse transcription.

TRUE

FALSE

Quiz Online 6 Chapter 7 The Polymerase Chain Reaction

Questions: 18 | Attempts: 3255 | Last updated: Apr 22, 2025

Sample Question
The product of a polymerase chain reaction.

Amplicon

Oligonucleotide

Primer extension

DNA templates

Thermal cycler

Transcription and Translation Quiz With Answers

Questions: 10 | Attempts: 83305 | Last updated: Sep 12, 2025

Sample Question
A cell builds its proteins from the Instructions encoded in its _________.

Cytoplasm

Amino acid

Lysosome

Genome

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