Tag: molecular biology

Questions Related to molecular biology

The codon for anticodon 3' UUUA-5' is

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. 5' AAAU-3'

  2. 5' UAAA-3

  3. 3 UAAD-5

  4. 3' AAAU-5

Show answer
Correct Option: A

DNA duplex shows

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Right handed coiling and parallel

  2. Right handed coiling and antiparallel

  3. Left handed coiling and antiparallel

  4. Left handed coiling and parallel

Show answer
Correct Option: B

DNA strands have

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Quaternary structure

  2. Same polarity

  3. Antiparallel polarity

  4. Disulphide bond

Show answer
Correct Option: C

Chargaffs rules are applicable to

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Single stranded RNA

  2. Single stranded DNA and RNA

  3. Single stranded DNA

  4. Double stranded DNA

Show answer
Correct Option: D

DNA contains nucleobases, sugar and phosphate. Removal of which among these will not affect length of DNA

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Nucleobases

  2. Phosphate

  3. Sugar

  4. None of the above

Show answer
Correct Option: A

DNA double helix is

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Complementary and parallel

  2. Complementary and antiparallel

  3. Without super coils

  4. Always circular

Show answer
Correct Option: B

Which is an example of highly repetitive DNA?

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. Alu elements

  2. Histone gene cluster

  3. Dispersed repetitive DNA

  4. DNA minisatellite

Show answer
Correct Option: D

What is not relevant to DNA double helix ?

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. One turn every 34

  2. Diameter 20

  3. Distance between adjacent nucleotides 3.4

  4. Back bone has alternate ribose sugar and phosphate

  5. Sugar molecules are joined by phosphodiester bonds

Show answer
Correct Option: D

Diameter of DNA double helix is

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. 34 A

  2. 20 A

  3. 3.4 A

  4. 340 A

Show answer
Correct Option: B

Single base DNA differences are called

structure of dna and rna nucleic acids and polynucleotides nucleic acids and protein synthesis molecular biology biology

  1. VNTR

  2. SSCP

  3. SNP

  4. Expressed sequence tags

  5. Repetitive

Show answer
Correct Option: C