*Which of the following statements is true? a. peptidoglycan is comprised of cross-linked fatty acids b. the...

50.1K

Verified Solution

Question

Biology

Which of the following statements is true?
a. peptidoglycan is comprised of cross-linked fatty acids
b. the cell walls of most bacteria are composed ofpeptidoglycan
c. Gram-negative bacteria have a relatively thick layer ofpeptidoglycan
d. peptidoglycan is found mainly in the cell walls of fungi,algae and plants
e. answers (a) and (b) are both correct
The cell membrane of bacteria
a. is semi-permeable.
b. is usually a lipid bilayer
c. prevents cell lysis due to high intracellular osmoticpressure
d. answers (a) and (b) are correct e. answers (a) and (c) arecorrect
* A bacterial species has a generation time of 15 minutes and isgrowing exponentially. If there are 2 cells initially how manycells are there after 90 minutes?
a. 256 b. 128 c. 64 d. 32 e. none of the above
*Most bacterial cells reproduce by
a. the budding of daughter cells from a mother cell
b. forming spores that later germinate
c. binary fission
d. production of gametes and sexual reproduction
Â Â

Answer & Explanation Solved by verified expert

4.5 Ratings (821 Votes)

1 Peptidoglycan is found in the cell wall of bacteria and is made of sugars and amino acids Nacetyl glucosamine and Nacetyl muramic acid Gram positive bacteria have a thick peptidoglycan layer when compared to Gram negative bacteria So the correct option is option See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member