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Zinaida [17]
3 years ago
11

In the developing fetus, the umbilical __________ carries blood rich in nutrients and oxygen to the fetus.

Biology
1 answer:
vesna_86 [32]3 years ago
6 0
Cord? Or maybe vein. But I strongly believe it’s cord
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Rotenone, a toxic compound isolated from plants, strongly inhibits the transfer of electrons from iron-sulfur centers in Complex
Darya [45]

Answer:

(A) It prevents electron flow from the iron-sulfur centers in complex 1 to the ubiquinone. Due to reduction in electron transfer rate, there is a decrease in the production of ATP which is dangerous for some insects and fish over time.

(B) It also prevents electron flow from cytochrome b to cytochrome c1 at the complex III which leads to QH2 accumulation. If oxidized Q is not present, these is alteration of electron flow and the production of ATP is altered.

(C) Rotenone only prevent electron transfer into the chain at Complex 1  but it does not affect electron transfer at Complex II. Although there is slow ETC, it does not stop completely. However, Antimycin A prevents the oxidation of QH2, the final electron acceptor crom complex I and complex II. Thereby, stopping the production of both ETC and ATP. It can be concluded that antimycin A is a more potent poison.

Explanation:

Rotenone prevents electron flow from the iron-sulfur centers in complex 1 to the ubiquinone. Due to a reduction in electron transfer rate, there is a decrease in the production of ATP which is dangerous for some insects and fish over time. Antimycin A also prevents electron flow from cytochrome b to cytochrome c1 at the complex III which leads to QH2 accumulation. If oxidized Q is not present, there is an alteration of electron flow and the production of ATP is altered. Antimycin A is more potent than rotenone.

7 0
3 years ago
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Gram-positive and gram-negative bacteria are most commonly differentiated in the laboratory by __________.
alisha [4.7K]
Gram staining
Gram-positive turns pink or red
Gram negative turns dark blue or purple
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3 years ago
3.
ikadub [295]

Answer:

Phospholipid

Explanation:

4 0
2 years ago
Evolutionary biology is the study of _____.
Vlad [161]
It is going to be B. the word Bio means the earth. every time you hear the word Bio, then think about the earth
3 0
3 years ago
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What climate zone has very little change in weather
Harrizon [31]

Answer:

Temperate Climates

Explanation:

Temperate means the weather and temperatures remain mild withuot much change

6 0
2 years ago
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