In this question in which is the major source then of free oxygen in the earth's Proterozoic atmosphere is being produce by the evaporation of the ocean water. Hope this answer would be of big help to this assignment then.
Answer:
I believe the correct answer would be letter <u>D</u>. or <u>hominids</u>
Explanation:
hopefully this is helpful, have a nice day :)
-cherry
Answer:
a. The alpha-carbon
Explanation:
An amino acid is an organic molecule that contains a carboxyl (COOH) and a amino (NH2) group. It has a central carbon called as alpha carbon.
The carboxyl and amino groups are attached to the the alpha carbon. Apart from them, a side chain denoted by "R" is also covalently attached to it. Side chain varies in each amino acid and it imparts the unique properties to the particular amino acid.
Fluid means being able to move, relating to the membrane as it can freely move allowing molecules in and out. The word mosaic means something of many different components which also relates to the plasma membrane as it consists of phosphates glycoproteins, cholesterol and integral proteins.