MBIO 3401 Exam 1 review questions
and answers 12-21
Peptidoglycan layer key components - correct answer ✅sugar
backbone
peptide cross links
peptidoglycan layer functions - correct answer ✅maintains cell
shape
protect against osmotic pressure
structural support
Cell envelope key components -
correct answer ✅cytoplasmic membrane
peptidoglycan
outer/inner membrane
cell envelope function -
correct answer ✅cell structure/shape
LPS - what is it and what does it stand for -
correct answer ✅Lipopolysaccharide
core polysaccharide
, MBIO 3401 Exam 1 review questions
and answers 12-21
O antigen linked to A lipid
Lipid A components -
correct answer ✅phosphoglucosamine dimer esterified/amidates
to 6 fatty acids
repeating polysaccharide units of O antigen extend from lipid A
what are topoisomerases and how many classifications are there -
correct answer ✅enzymes that supercoil/uncoil DNA
2 classes
Type 1 topoisomerase -
correct answer ✅single proteins
cleave one strand of DNA
relive supercoiling
relax negative supercoil
Type 2 Topoisomerase -
correct answer ✅multiple subunits
cleave both strands of DNA
and answers 12-21
Peptidoglycan layer key components - correct answer ✅sugar
backbone
peptide cross links
peptidoglycan layer functions - correct answer ✅maintains cell
shape
protect against osmotic pressure
structural support
Cell envelope key components -
correct answer ✅cytoplasmic membrane
peptidoglycan
outer/inner membrane
cell envelope function -
correct answer ✅cell structure/shape
LPS - what is it and what does it stand for -
correct answer ✅Lipopolysaccharide
core polysaccharide
, MBIO 3401 Exam 1 review questions
and answers 12-21
O antigen linked to A lipid
Lipid A components -
correct answer ✅phosphoglucosamine dimer esterified/amidates
to 6 fatty acids
repeating polysaccharide units of O antigen extend from lipid A
what are topoisomerases and how many classifications are there -
correct answer ✅enzymes that supercoil/uncoil DNA
2 classes
Type 1 topoisomerase -
correct answer ✅single proteins
cleave one strand of DNA
relive supercoiling
relax negative supercoil
Type 2 Topoisomerase -
correct answer ✅multiple subunits
cleave both strands of DNA
