Is about 3 hours to my understanding
Viral replication involves six steps: attachment, penetration, uncoating, replication, assembly, and release. During attachment and penetration, the virus attaches itself to a host cell and injects its genetic material into it.
toxic enzymes that damage the host cell that are coded for in the viral genome
secretion of chemicals from the virus to the membrane of the host cell
replication of the viral genetic material within the host
lysis of the host to release new viruses
integrating into the host cell chromosomes
No, the sickle-cell anemia allele won't be eliminated by natural selection.
Sickle-cell anemia trait is controlled by a single gene and the allele (S) for sickle-cell anemia is a harmful autosomal recessive.
It is caused by a mutation in the normal allele (A) for hemoglobin (a protein on red blood cells).
Heterozygotes (AS) with the sickle-cell allele are resistant to malaria, a deadly tropical disease. It is common in many African populations.
In these areas, (S) carriers have been naturally selected, because their red blood cells, containing some abnormal hemoglobin, tend to be in sickle shape when they are infected by the malarial parasite.
Therefore, they are more likely to survive and reproduce. This keeps the S allele in the gene pool.
Learn more about Sickle-cell anemia on
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Answer:
The deficiency in this enzyme causes that it begins erroneously label other enzymes. Because the activating proteins are not properly labeled, they escape into spaces outside the cell and do not disintegrate substances inside the cells, that is, lysosomes cannot perform their function correctly. This causes waste products, which must include carbohydrates, lipids and proteins, accumulate in specific masses as inclusion bodies.
Yes she will fall under her doctor's recommendation because she is taking prescribed amount of carbohydrate in one serving which can affect her blood sugar level and dietry fibre will have no effect on sugar level so separate portion can be taken.
Explanation:
Dietary fibres are also carbohydrates called cellulose which is not digested in our bodies. The addition of cellulose is just for adding roughage to the diet as it provides bulk to the diet.
The carbohydrate intake is very important in the meal plan as it readily provides energy. The glucose is the most easily used form of energy from the body in comparision to fat and proteins. The energy yield is 4 calories per 1 gram of carbohydrates.
The recommendations by doctor to Brianna is to have 30 grams of carbohydrate and can have dietry fibre in different portion. Thus, if she eats two servings for the diet she is following the instructions.
The dietry fibre has no effect on her sugar level but carbohydrate increment will cause raise in sugar level as insulin production gets down in diabetics and not using the carbohydrate as fuel.
