DNA in highly condensed areas of chromatin are
O
A. Excised before transcription
O
B. Unable to bind to other proteins
O
c. Activated by enhancers
O
D.
Transcribed by repressors
O
E. Induced by the presence

Molecules like glucose and amino acids are not lipid soluble, so cannot cross the cell membrane by simple diffusion. instead, they are shuttled across by carrier proteins in the membrane from high to low concentration. does this process require energy from the cell? this is an example of what type of molecular movement?