Answer:
The scientist is studying oxygen which can also be found in protien. oxygen is the element which makes up to 65% of human body mass. It is also found in proteins inside the body.
The B-pleated sheet is held together by hydrogen bonds between adjacent segments.
In an a-helix the side chains are located on the outside of the helix
The secondary level of protein structure refers to the spatial arrangements of short segments of the protein
D) DNA is found in chromosomes in the nucleus, while RNA can move around the cell.
Answer:
Answer is A signal is sent down an exon within a nerve cell.
Explanation: