When oxygen is available, a cell will begin the krebs cycle after

a. the calvin cycle.

b. glycolysis.

c. the electron transport chain.

d. none of the above

Food provides molecules that serve as fuel and building material for all organisms. plants undergo photosynthesis and make their own food. other organisms, like us and the horse seen above, are consumers and eat food. how do all organisms use food as fuel? be sure to include the name of the process in your answer. me.

How do you transfer mrna into codons ? i'm so confused : (

What was darwins theory of common decent