Biotech 1

Eco R1 has the recognition sequence

• GAATTC

• GAATC

• GATGTC

• GTATC

Bacteriophages

• Can go through lysogeny only

• Can go through lyric cycle only

• Can got through lysogeny and Lytic cycle

• Will remain dormant inside the bacteria

Bacteriophages can

• Inject their genome into the bacteria using spikes

• Can assemble the head and other parts of its structure inside the bacterial cell

• Can counter restriction enzyme activity by methylation

• Can infect eukaryotes

Plasmids are

• Circular in shape

• Extrachromosomal genome

• Helpful in biotechnology

• All of the above

Ligase

• Is ATP Dependant

• Can create phosphodiester bond under right conditions

• Belong to synthetase category

• All of the above

Bacterial genome is cleaved by its own restriction enzyme

• Yes

• No

Introns are an integral part of DNA

• Yes

• No

• Introns are

Endonucleases

• Cleave inside the recognition site

• Are ATP dependant

• Can cleave only hydrogen bonds between bases

• Are equivalent to helicases in cleaving action

Glycosidic bond links

• A pentose sugar with a nitrogen base

• Two Pentose sugars

• A base with another base

• All of the above

In Ribose sugar

• 2’ OH is absent

• 2’OH is present

• None of the above