Lecture 3

Question 1

cell size

Answer 1

the smaller the cell the bigger the s/v ratio

Question 2

cell membrane structure of bacteria

Answer 2

hydrophobic and hydrophilic regions - phospholipid bilayers
phosphatidylethanolamine
strengthened by hopanoids

Question 3

linkage in bacteria and eukarya

Answer 3

ester (C double bond O)

Question 4

linkage in archaea

Answer 4

ether (C-O with two R groups)

Question 5

Archaea membrane structure

Answer 5

repeating units of isoprene–> glycerol diether –> phytanyl
no bilayer

Question 6

numerical aperture

Answer 6

measure of light gathering ability. lenses with higher magnification have higher numerical apertures