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amid [387]
1 year ago
5

a transmembrane segment of a membrane protein is all made up of alpha helix and contains 22 amino acids. what is the thickness o

f the membrane? if the transmembrane segment was made up of beta strand then how many amino acids in that beta strand will be needed to travel through the thickness of the membrane?
Biology
1 answer:
gregori [183]1 year ago
6 0

Nine amino acids are needed to travel through the thickness of the membrane.

Alpha-axial helix's distance between amino acids is 1.5. A

The number of gaps between the 22 amino acids in the helix is equal to (22-1) = 21.

Therefore, the helix's length is (21 X 1.5) = 31.5.

One alpha helix is sufficient to span the membrane's breadth, hence the formula is: span of the helix = thickness of the membrane = 31.5 A

The thickness of the membrane is determined by the formula above to be 31.5 AA.

In the beta-strand, there is 3.5 AA between each amino acid.

Therefore, (31.5/3.5) = 9 amino acids are needed.

Learn more about  amino acids at

brainly.com/question/28586331?referrer=searchResults

#SPJ4

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Which of the following statements are true about the homologous chromosomes of a pair?
Black_prince [1.1K]

The statement that is true about homologous chromosomes of a pair is that homologous pair have the same genes at the same location (loci), but will possibly have different alleles.

<h3>What are homologous chromosomes?</h3>

Homologous chromosomes are set of chromosomes that possess similar but non-identical genes.

Homologous chromosomes are from each parent of an organism i.e. male and female parent.

The homologous chromosomes is responsible for the diploid state of an organism, however, it becomes separated during the anaphase 1 stage of meiosis.

Therefore, the satement that is true about homologous chromosomes of a pair is that homologous pair have the same genes at the same location (loci), but will possibly have different alleles.

Learn more about homologous chromosomes at: brainly.com/question/27258467

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5 0
1 year ago
Glucose-6-phosphate dehydrogenase deficiency (G6PD) is inherited as an X-linked recessive gene 43) in humans. A woman whose fath
LiRa [457]

Answer:

50% or 1/2. The result remains unchanged if the husband were to have G6PD.

Explanation:

For X-linked recessive inheritance, a female (XX) needs two recessive alleles to be affected while a male needs only one (XY). It is hypothetically assumed that the Y chromosome does not carry any trait.

Assuming the allele for the disease is represented by g, a woman whose father suffered from G6PD is a carrier for the disease with genotype X^GX^g. A normal man will have the genotype X^GY. When the 2 marries:

X^GX^g   x   X^GY = X^GX^G (normal female), X^GY (normal male), X^GX^g (carrier female), X^gY (affected male)It thus means that 50% or 1/2 of their sons will be expected to have G6PD.

Now, assuming the husband has G6PD, the mating becomes:

X^GX^g   x   X^gY = X^GX^g (carrier female), X^GY (normal male),  X^gX^g (affected female), X^gY (affected male)50% or 1/2 of their sons is still expected to have G6PD. The ratio remains unchanged.

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Answer:

hydrologic cycle

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Water cycle. Water cycle, also called hydrologic cycle, cycle that involves the continuous circulation of water in the Earth-atmosphere system. Of the many processes involved in the water cycle, the most important are evaporation, transpiration, condensation, precipitation, and runoff.

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