RNA polymerase (green) synthesizes RNA by following a strand of DNA. RNA polymerase is an enzyme that is responsible for copying a DNA sequence into an RNA sequence, duyring the process of transcription.
Answer:
Coral reefs are often called the "tropical rainforests of the sea" for their astounding richness of life. Due to their structural complexity, corals are one of the most productive ecosystems on Earth, providing important services to mankind including fisheries, coastal protection, medicines, recreation, and tourism.
Explanation:
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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Any disease that produces fat malabsorption can bring about deficiencies of vitamins a, d, e, and k.
