Molecular Biology

Question 1

Gene

Answer 1

An entire nucleic acid sequence, including non transcribed regulatory sequences (e.g promoters and splice and poly (A) sites) that is necessary for the synthesis of a functional molecule in the right place

Question 2

Classes of eukaryotic DNA

Answer 2

1) protein coding genes
2) tandemly repeated genes
3) repetitive DNA
4) unclassified spacer DNA

Question 3

Heterochromatin

Answer 3

Chromatin regions that do not uncoil

Question 4

Chromatin remodeling complexes

Answer 4

Chromatin remodeling complexes are large protein machines that use ATP hydrolysis to open the structure of condensed chromatin or to re-condense chromatin in

Question 5

The histone code hypothesis

Answer 5

Distinct markings of the histone tails facilitate the recruitment of distinct protein complexes that mediate transcriptional activation or inactivation, efficient repair of genetic lesions and mark newly replicated chromatin

Question 6

Antigenicity

Answer 6

Virus ability to causes an immune response

Question 7

Haemagglutinin

Answer 7

Major envelope protein involved in the fusion of the viral envelope with the host cell membrane. Major target for neutralizing antibodies

Question 8

Neuraminidase

Answer 8

Tetrameric spike that projects from the surface and removes sialic acid from glycoproteins