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In sickle-cell disease, variation in one gene causes red blood cells to bend, or sickle. This means the sickled cells _____.

carry toxic levels of oxygen through the body

attract larger numbers of the malaria parasite

are better at destroying the malaria parasite

cannot carry normal levels of oxygen to cells

Respuesta :

tangledsiranwrap
Sickle cells are shriveled and do not function properly. Thus, they cannot carry normal levels of oxygen to cells. Think of it this way— a healthy cell that properly carries oxygen to cells is round and smooth. That’s how the cell is supposed to be. When a cell is a shriveled sickle cell, it is damaged, and isn’t able to work like it’s meant to.
Something interesting about sickle cell disease is that you can be a carrier for it (aka homozygous for the trait, Xx). Carriers are actually resistant to malaria. They have regular blood cells AND sickle cells! However, if you’re homozygous (XX) you will have complete sickle cell disease. And that’s not fun!!
Hope this helped you at all!!
shivjimishraVT

In sickle-cell disease, variation in one gene causes red blood cells to bend, or sickle. This means the sickled cells cannot carry normal levels of oxygen to cells. Thus, the correct option is D.

What is sickle-cell disease?

Sickle-cell disease may be defined as a cluster of inherited red blood cell disorders.

Due to this disease, the shape of the red blood cells has an abnormal crescent, blocks small blood vessels, and does not last as long as normal red blood cells.

Due to the alterations in the shape of red blood cells, the affinity of oxygen binding decreases, and hence they cannot carry normal levels of oxygen to cells.

Therefore, the correct option for this question is D.

To learn more about the sickle-cell disease, refer to the link:

https://brainly.com/question/17063471

#SPJ5

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