I would say B.
A, umm, don't crash trains, that's bad.
C, Lillian is wondering how fast a train can go, not at what curve will it fall.
D, Lillian isn't wondering about the size of the trains, just the speed.
A silent mutation. This is when the new codon will work just as well as the old one without changing the amino acid shape.
The influence DNA has upon the synthesis of lipids, carbohydrates and steroids can be summarized or stated by B. Proteins that DNA codes for catalyze the reactions that synthesize these compounds.
<span>1.
They are the sites of reactions that convert solar energy -> chemical energy.
2.
They contain the green pigment chlorophyll.
3.
They have membranous sacs called "thylakoids" that are surrounded by a fluid called "stroma".</span>
