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vodomira [7]
3 years ago
9

Sickle-cell anemia results from a point mutation in the HBB gene. The mutation results in the replacement of an amino acid that

has a hydrophilic R-group with an amino acid that has a hydrophobic R-group on the exterior of the hemoglobin protein. Such a mutation would most likely result in altered
Biology
1 answer:
jekas [21]3 years ago
3 0

Answer: protein structure

Explanation:

In Sickle-cell anemia, the gene sequence of hemoglobin is changed in its sixth position due to the substitution of glutamate with valine.

So, since glutamate, an amino acid soluble in water due to its hydrophilic side chain is substituted with valine, an amino acid that has a hydrophobic side chain insoluble in water or bloodstream; the resulting hemoglobin protein is altered in structure (sickle shaped) and unable to bind and transport oxygen efficiently to the various body parts.

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A school aged child is brought to the clinic by her parents. The parents state that the child will be engaged in some activity a
TiliK225 [7]

Answer:

Absence seizures

Explanation:

This is a  type of seizure also known as ( Petit Mal seizures).It   is common in children, (between 4-14 years) and  characterised with intent stare at empty space for few seconds(which may occur in 10 -100 times in a day) and  does not caused any significant harm.However,with frequent occurrence it may  affect concentration.It does not exceed  <u>15 seconds</u>

it is caused by repeated electrical signals in the brain due to interference  in the synaptic transmission and also  to alterations in levels of Neurotransmitters .

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8 0
4 years ago
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Describe neurulation and relate the components of a fully developed nervous system to the neural tube and neural crest.
STatiana [176]
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4 0
4 years ago
PLS HELP
Romashka [77]
<span>i think
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BabaBlast [244]

Answer

A: stalagmites

B. Sinkholes

D. stalactites

Just took the edge2020 test and these are right

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3 years ago
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1. What is mitosis in a living cell?
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8 0
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