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dmitriy555 [2]
3 years ago
6

Which of the following is true of vertebrates with four-chambered hearts?

Biology
1 answer:
ANEK [815]3 years ago
8 0
Can you be a little more specific?
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In general, why might cell-wall inhibiting antimicrobial drugs be less effective on gram-negative bacteria compared to gram-posi
asambeis [7]

Cell-wall inhibiting antimicrobial drugs be less effective on gram-negative bacteria compared to gram-positive bacteria because the outer membrane of the gram-negative bacteria inhibits penetration of the drug and the peptidoglycan found in gram-positive bacteria is structurally different from that in gram-negative bacteria.  

Answer: Option B & C

<u>Explanation:</u>

Antimicrobial drugs are induced into a body to act on that particular selective bacterium which causes disease. When antimicrobial drugs are injected they act efficiently on the gram positive bacteria inhibiting the proliferation of the cells by acting on the cell wall so that cell multiplication doesn’t happen.

On the other hand it is hard to act on the gram-negative bacteria as it has a cell membrane that inhibits drug penetration into it. Both cell walls contain peptidoglycan but in the gram-positive is more assembled and layered while in the gram-negative it is just a thin layer. As gram-positive is thick layered it provides place for another molecule to attach to it but the thin layer in gram-negative inhibits it.

4 0
3 years ago
Which two statements are true for the leading strand in DNA?
Nitella [24]
DNA strands are split apart to allow an opening for replication. The opening has two replication forks so synthesis goes toward them in 5' to 3' direction.


Hope This Helps
5 0
3 years ago
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Why is a fat-free diet dangerous? It can cause the body to break down muscle tissues. It can result in a deficiency of essential
Aleksandr-060686 [28]
A fat free diet is dangerous because IT CAN RESULT IN DEFICIENCY OF ESSENTIAL FATTY ACIDS. 
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In photosynthesis, solar energy is converted into a usable chemical energy form. The energy containing product of photosynthesis
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b. carb (sugars)

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plants make glucose through photosynthesis

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Oxygen is required to conduct cellular respiration. <br> true/false?
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THE ANSWER WOULD BE TRUE
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