Answer:
a. preventing the cross-linkage of NAM subunits
Explanation:
The bacterial cell wall is made of peptidoglycan which is a polymer of alternating N-acetylglucosamine (NAG) and N-acetylmuramic acid (NAM) residues. The NAM residues are crosslinked to impart additional strength to the cell wall.
Most of the antibiotics that target the cell wall synthesis in bacteria inhibit the enzyme of transpeptidation which in turn cross-links the NAM residues of the polysaccharide chains of the bacterial cell wall. Examples of these antibiotics include penicillins and cephalosporins.
Answer:
DNA is the blueprint of life because it is what tells our bodies what to make, how to make us , and what to give us.
Answer:
Key facts. Antibiotic resistance is one of the biggest threats to global behaviour change, antibiotic resistance will remain a major threat. with which people now travel, antibiotic resistance is a global problem
Explanation:
Hope this helps
Answer:
B
Explanation:
We know that the AmpR gene region has been interrupted. So this means the AmpR gene will not function in the recombinant DNA.
But the question tells us that the TetR gene is not interrupted, so the TetR gene will still function.
AmpR represses the protein that confers resistance to ampicillin, and AmpR is no longer functional, <u>so the new bacterial cells will be resistant to ampicillin.</u>
TetR represses the protein that causes resistance to tetracyline, and TetR is still functional, <u>so the new bacterial cells will not be resistant to tetracycline. </u>
This means B, there will be <u>growth on ampicillin but not tetracycline containing media.</u>
The ependymal cells is the answer. One of the four types of
neuroglia in the center of nervous system is ependymal, this is the reason of
production of cerebrospinal fluid, this cause to serve as a reservoir for
neuroregeneration, also this is made of thin neuroectodermal linange to
ventricular system of the brain and the central canal of the spinal cord, made
up of ependymal cells
