Which of the following statements is true?
a. the cell envelope material of gram-positive bacteria contains endotoxin activity.
b. the periplasmic space contains the peptidoglycan layer of gram-negative bacteria.
c. the structure/composition of the membrane lipids of archaea are the same as in bacteria.
d. in comparing the cell envelopes of gram-negative bacteria and a gram-positive bacteria, it would be accurate to say that gram-positives have much more lipid material in their cell envelope than a gram-negative.
e. all the above are false statements, none are true.