Which of the following is not true of the reaction catalyzed by the pyruvate dehydrogenase complex?
a) biotin participates in the decarboxylation.
b) both nad+ and a flavin nucleotide act as electron carriers.
c) the reaction occurs in the mitochondrial matrix.
d) the substrate is held by the lipoyl-lysine "swinging arm."
e) two different cofactors containing —sh groups participate.

During the day, plants produce by splitting water molecules in the light-dependent reactions of photosynthesis. at the same time, plants use cellular respiration to produce some of the needed by the light-independent reactions to make sugars. during the night, plants produce because takes place.

Patient has just received an organ transplant which treatment would be most effective in preventing the patient’s body from

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.