the first one would be the correct answer
Answer:
the answer is C
Explanation:
this shows how nutrients in the body because it enters the blood capillary which therefore goes through the small intestine.
I really hope this is helpful and understanding.
There is no pigment in the brain, so it is in it's natural colour, grey.
Answer:
It is the varying chemical structure and properties of the R-group that make the amino acids different from one another. About 9 amino acids have non-polar R-groups and are relatively hydrophobic. Another 6 amino acids have strongly polar R-groups which readily attract water molecules.
