Biology

Molecular Genetics

917 Questions

Molecular genetics explores the mechanisms of genetic information transfer, including DNA replication, transcription, and translation. It is a core component of biology syllabi. These concepts frequently appear in general science sections of major competitive exams.

DNA replicationTranscription processTranslation processRNA typesCentral dogma

Molecular Genetics Questions

Multiple choice

A virion is a/ an

  1. ribosome of virus

  2. infective particle of virus

  3. viral gene

  4. viral lysosome
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

A virion is a complete viral particle consisting of RNA or DNA surrounded by a protein shell, constituting the infective form of a virus.

Multiple choice

Viral genes are made of

  1. DNA only

  2. RNA only

  3. either proteins or nucleic acids

  4. either RNA or DNA
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Viruses typically store their genetic information encoded in molecules of either DNA or RNA -- either one or the other but not both.

Multiple choice

Plasmids contain

  1. RNA

  2. RNA and proteins

  3. photosynthetic lamellae

  4. DNA
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Plasmids are also known as extra-chromosomal DNA.

Multiple choice

Ribosome is the site of

  1. DNA replication

  2. autophagic digestion

  3. intracellular transport

  4. protein synthesis
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Ribosome is the site of protein synthesis.