According to the mutation accumulation theory, ageing organisms experience an increase in frailty and mortality due to the haphazard accumulation of mutations that harm them.
The traditional evolutionary explanation of ageing explains why mortality increases with age: as people age, their lifetime fertility declines, therefore their ability to continue to survive has a smaller impact on their ability to reproduce. But in addition to fertility, successful reproduction frequently entails intergenerational transfers.
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Answer:
These cells use active-transport systems in the apical domains of their plasma membranes to take up dietary sugars and amino acids from the lumen of the intestine. The uptake of glucose, for example, is carried out by a transporter that coordinately transports two Na+ and one glucose into the cell
Explanation:
It provided the large numbers of troops needed to reinforce the Allied effort.
Biome is a major regional and global community of organisms.
