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Molecular Biology Quizzes, Questions & Answers

Recent Molecular Biology Quizzes

DNA Molecule And DNA Fragments Quiz

Questions: 50 | Attempts: 204 | Last updated: Oct 22, 2025

Sample Question
Photosynthesis has been occuring on this planet for approximately 3 billion years. In this time plants have evolved from small single celled bacteria in the ocean and diversified into many ecological niches. Some plants on earth such as giant sequoia manage to transport water 100s of meters into the air without the use of a pump. This is made possible by vascular tissue composed of small tubes that transport the water. They are able to do this because

Hydrogen bonds among water molecules give it cohesive properties

Water has adhesive properties

Water is polar

All of the above

Unit 3: Ch 8 Quiz (Fall 2014)

Questions: 25 | Attempts: 223 | Last updated: Mar 14, 2025

Sample Question
Which of the following is a pair of complementary bases?

Cytosine and cytosine

Thymine and adenine

Adenine and guanine

Thymine and ctyosine

Bio 2 Mid-term Exam Review (Fall 2014)

Questions: 83 | Attempts: 504 | Last updated: Mar 20, 2025

Sample Question
Which of the following is a polymer of amino acids?

Protein

Carbohydrate

Lipid

Nucleic Acid

Unit 3 Target 2 (Part 2): mRNA, Trna, Rrna

Questions: 5 | Attempts: 1245 | Last updated: Mar 22, 2025

Sample Question
The function of tRNA is to

Synthesize DNA.

Synthesize mRNA.

Form ribosomes.

Decode mRNA into amino acids.

Unit 3 Target 1: DNA Structure And Function

Questions: 12 | Attempts: 860 | Last updated: Mar 19, 2025

Sample Question
Which of the following is a nucleotide found in DNA?

Ribose + phosphate group + thymine

Ribose + phosphate group + uracil

deoxyribose + phosphate group + uracil

Deoxyribose + phosphate group + cytosine

Biology Molecules Of Life

Questions: 10 | Attempts: 200 | Last updated: May 8, 2025

Sample Question
Which of the followings is a monosaccharide?

Glucose

Sucrose

Starch

Glycerol

Quiz In Nucleic ACID Structures

Questions: 10 | Attempts: 1974 | Last updated: Mar 22, 2025

Sample Question
Which of the following is NOT found in DNA?

Uracil

Thymine

Adenine

Cytosine

Online Test: Molecular Basis Of Inheritance

Questions: 15 | Attempts: 1972 | Last updated: Mar 22, 2025

Sample Question
Select the incorrect option for genetic code?

It is nearly universal

It is degenerate

It is unambiguous

A codon in mRNA is read in a non contiguous fashion

Midterm 2 Chee 370

Questions: 35 | Attempts: 492 | Last updated: Mar 22, 2025

Sample Question
What term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription?

Induction

Activation

Negative control

Positive control

Stimulation

Unit 4 Chee 370

Questions: 37 | Attempts: 192 | Last updated: Mar 20, 2025

Sample Question
The mutation rate of DNA replication is about 1 in 10^4 nucleotides

True

False

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