Answer AND Explanation:
A steroid is an organic macromolecule that is biologically active with four rings arranged in a specific molecular configuration. Steroids are important components of cell membranes which alter membrane fluidity and act as signaling molecules. The two main types of steroids are corticosteroids and androgenic steroids like testosterone and estradiol.
Answer:
The central dogma of molecular biology is an explanation of the flow of genetic information within a biological system. it is often stated as "DNA makes RNA, and RNA makes protein", although this is not its original meaning.This states that once "information" has passed into protein it cannot get out again.
Explanation:
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Answer:
Natural selection, the keystone of evolution, can switch direction in a matter of months, a novel experiment on lizards reveals.
Because humans are humans
