C. mRNA (the m stands for messenger)
20 grams at 4 calories per gram.
20*4=80 Calories.
The electron transport chain is located on the inner membrane of the mitochondria, as shown below. The electron transport chain contains a number of electron carriers. These carriers take the electrons from NADH and FADH2, pass them down the chain of complexes and electron carriers, and ultimately produce ATP.
Answer:
The easiest way to think of this is to imagine a bird with a wide jaw and a hooked beak that solely eats caterpillars. This would not be a problem for the bird if they are in the open air, but if they go into a crevice, or they go into a hole of a tree, they will be impossible to get.
I hope this helps!
