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3 years ago

What causes red blood cells to become sickle-shaped in a person with sickle

Chemistry

2 answers:

Otrada [13]3 years ago

8 0

Answer:

A. inheriting a specific gene

Explanation:

because sickle cell anemia is caused by a mutation in the gene responsible for making hemoglobin that makes blood red and enable the rbcs to carry o2 from lungs to the whole body.

but both mother and father must pass the defective gene to the child to be sick with sickle cell anemia otherwise the child will carry the gene but shows no sign of the anemia.

White raven [17]3 years ago

6 0

Answer:

A. Inheriting a specific gene

Explanation:

I hope this helps! ^^

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Naturally occurring element X exists in three isotopic forms: X-28 (27.979 amu, 92.21% abundance), X-29 (28.976 amu 4.70% abunda

bezimeni [28]

Answer: The average atomic mass of X is 28.09 amu

Explanation:

Average atomic mass of an element is defined as the sum of masses of each isotope each multiplied by their natural fractional abundance.

Formula used to calculate average atomic mass follows:

$\text{Average atomic mass }=\sum_{i=1}^n\text{(Atomic mass of an isotopes)}_i\times \text{(Fractional abundance})_i$ .....(1)

For isotope 1:

Mass of isotope 1 = 27.979 amu

Percentage abundance of isotope 1 = 92.21 %

Fractional abundance of isotope 1 = 0.9212

For isotope 2:

Mass of isotope 2 = 28.976 amu

Percentage abundance of isotope 2 = 4.70 %

Fractional abundance of isotope 2 = 0.0470

For isotope 3:

Mass of isotope 3 = 29.974 amu

Percentage abundance of isotope 3 = 3.09 %

Fractional abundance of isotope 3 = 0.0309

Putting values in equation 1, we get:

$\text{Average atomic mass of X}=[(27.979\times 0.9212)+(28.976\times 0.0470)+(29.974\times 0.0309)]$

$\text{Average atomic mass of X}=28.09amu$

Hence, the average atomic mass of X is 28.09 amu

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Is a blood vessel an organ

Alika [10]

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Ira Lisetskai [31]

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