Powerpoint 25

Question 1

characteristics of each cell dictated by information contained on

Answer 1

DNA

Question 2

DNA holds master

Answer 2

Blueprint

-all cell structured and processes directed by DNA

Question 3

complete set of genetic information is referred to as a

Answer 3

genome

Question 4

genome of all cells is composed of

Answer 4

DNA

-exception is some viruses have RNA genome

Question 5

study of transfer of genes is

Answer 5

genetics

Question 6

study of sequence of DNA is

Answer 6

genomics

Question 7

prokaryotes have circular and linear

Answer 7

chromosomes

Question 8

prokaryote genomes includes extra chromosomal

Answer 8

DNA plasmids

-describes in number of base-pairs normally Kilo (kbp) or Mega (Mbp)

Question 9

extra-chromosomal circular double stranded DNA, had origin of replication by usually encodes nonessential functions

Answer 9

Plasmids

Question 10

Copy number and Host restriction varies

conjugative or self transmittable

Answer 10

Plasmids

Question 11

Origin of transfer but no machinery of plasmids

-curing of plasmids

Answer 11

Mobilizable plasmids

Question 12

The uptake odf new genes conjugation, transformation and transduction and rearrangements by transposition all contribute to

Answer 12

species varients

Question 13

E.coli 0157:H7 is a

Answer 13

food pathogen

Question 14

E.coli K12 is a

Answer 14

normal flora

-these differ by about 1400 genes

Question 15

has obtained these extra genes encoding metabolic pathways, virulence factors, different pro-phages to make it a beter survivor relative to other organisms

Answer 15

E.coli 0157:H7

Question 16

transfer of large groups of genes known as______ also facilitate better survival

Answer 16

genomic islands

Question 17

Pthogenicity islands in

Answer 17

Salmonella

Question 18

Moile symbiosis islan transferred in the past from _____ to _____ allowing for nitrogen fixation relationships.

Answer 18

Mesorhizobium to Breadyrhixobium