Cell membranes are made of phospholipids to keep the cell's water (cytoplasm) in and everything else out. so your answer would be D <span />
Answer:
Cells on either side of the cut pull toward each other until they close the gap.
~Hope this helps!~
Answer:
I think it is sugar, as it is using sugar to grow.
I believe <span>a </span>regulatory<span> repressor </span>protein<span> is normally bound to the operator. This prevents the transcription of the genes on the </span>operon<span>.</span>
We base hypothesis or theories off of data or observations.