48) which of the following is true for all exergonic reactions? a) the reaction goes only in a forward direction: all reactants will be converted to products, but no products will be converted to reactants. b) the products have more total energy than the reactants. c) a net input of energy from the surroundings is required for the reactions to proceed. d) the reaction proceeds with a net release of available energy. e) they make large molecules from small molecules.

D) The reaction proceeds with a net release of available energy.

Explanation:

Exergonic reactions are those that proceed with a net release of available energy. This type of reaction is part of cell metabolism and is very important for the body's vital reactions.

This is because this type of reaction releases energy for cell work from the degradation potential of organic nutrients, unlike endergonic reactions that absorb energy applied to cell function, producing new components.

both anaerobic and aerobic respiration use glucose (or other carbohydrates), proteins and lipids to produce atp and nadh. cell uses those energy molecules, obtained from food and   breaks them down during the chemical reactions of respiration. in anaerobic respiration, nadh is regenerated to nad+ by enzymes lactate dehydrogenase (lactate is produced, e.g. in muscle cells) or by alcohol dehydrogenase where ethanol is produced (alcohol fermentation), while in aerobic respiration, electrons from nadh are deposited in the mitochondria to regenerate nad+ (electron transport chain. anaerobic respiration produces 2 atp per molecule of glucose compared to aerobic respiration where about 38 atp molecules are produced.

carbon atoms, hydrogen, oxygen, and nitrogen.