Urea cycle:
a. what is its main purpose?
b. which 2 amino acids feed directly into the cycle?
c. what cellular location does it occur in?
d. does it create or use atp?

Plants consume most of their carbon from a. the soil b. the water c. the roots d. the air

Acell goes through cellular respiration and produces atp which it then uses to move a molecule across the cell membrane. how does the energy in the original glucose molecule change during this process? (2 points)

Crossing over is a method of (blank)?