AP BIOLOGY

PHOTOSYNTHESIS

THE CALVIN CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
A molecule that is phosphorylated
A
has been reduced as a result of a redox reaction involving the loss of an inorganic phosphate.
B
has an increased chemical reactivity; it is primed to do cellular work.
C
has been oxidized as a result of a redox reaction involving the gain of an inorganic phosphate.
D
has been reduced as a result of a redox reaction involving the gain of an inorganic phosphate.
Explanation: 

Detailed explanation-1: -Phosphorylation can stimulate or inhibit the function of the molecule it attaches to and is therefore an essential control mechanism for the cell. Such a conformational change is often stimulatory, but can also be inhibitory. Kinases are the enzymes that transfer a phosphate group to a molecule.

Detailed explanation-2: -Oxidative phosphorylation can be broken down into two parts: 1) Oxidation of NADH and FADH 2start text, end text, start subscript, 2, end subscript, and 2) Phosphorylation.

Detailed explanation-3: -ATP is also synthesized by substrate-level phosphorylation during glycolysis. ATP is synthesized at the expense of solar energy by photophosphorylation in the chloroplasts of plant cells.

Detailed explanation-4: -Oxidative phosphorylation is the metabolic pathway in which electrons are transferred from electron donors to electron acceptors in redox reactions; this series of reactions releases energy which is used to form ATP.

There is 1 question to complete.