The electron transport chain contains four large protein complexes: the nadh-q reductase complex, succinate dehydrogenase, the cytochrome c reductase complex, and the cytochrome c oxidase complex. these proteins

a. are integral proteins.
b. change in a similar way when reduced.
c. regulate the passage of h2o through the respiratory chain.
d. oxidize nadh.
e. complete oxidation of pyruvate to acetate.

there is not 1 highest source of protein, but there are many; meats, fish, poultry, seafood, cheese, eggs, yogurt and milk. the only non complete animal food that is beneficial is gelatin.

sorry if this did not , have a great day!

garbage disposal because lysosomes dispose of old cell parts like garbage disposals dispose of old food.

answer increasing the intensity, duration,and frequency of exercise progressively;