QUESTIONS WITH SOLUTIONS GRADED A+
● greek phagein means. Answer: to devour
● what is a bacteriophage. Answer: viruses that infect bacterial hosts
● bacteriophages are ubiquitous in all natural populations of bacteria
meaning. Answer: They are present appearing or found everywhere in
natural populations of bacteria
● how has phage research transformed molecular biology. Answer: 1)
helped define core biological principles (gene, transcription, translation
etc.)
2) facilitated the "birth" of molecular biology (restriction enzymes,
genome editing, crispr9 etc)
3) importance in ecology and ecosystems
4) bacterial pathogenicity and evolution
5) phases as alternative antimicrobiols
● Bacteriophages with tan genomes are. Answer: Mostly small and
ssRNA
, ● small DNA genomes are. Answer: less than 10 kb, mostly ssDNA
● Large DNA genomes are. Answer: - medium to large DNA genome
(30-200 kb)
● which of the genomes includes most of the temperate phages. Answer:
Large DNA genomes
● Describe the anatomy of a bacteriophage. Answer: piece of nucleic
acid surrounded by protein coat
● the bacteriophage is often composed of a head collar and tail, what is
collar and tail role. Answer: Used for attachment and entry
● what is an example of small ssRNA phages. Answer: bacteriophage
MS2
● (+) single-stranded RNA viruses is the mRNA this means. Answer: it
can be directly translated
● In order for it to make more copies what must a + ssRNA do. Answer:
make antisense (-) strand