Which of the statements below does not describe antigens? a. The parts of antigen molecules that initiate immune responses are called epitopes or antigenic determinants. b. Antigens can include proteins, nucleic acids, lipoproteins, glycoproteins, and certain large polysaccharides. c. Antigens exhibit immunogenicity and reactivity. d. Antigens only come from microbes.

D. antigen only come from microbes

Explanation:

Antigens are substances which elicits a response by the antibodies. Antigens Antigens include proteins, nucleic acids, lipoproteins, glycoproteins, and certain large polysaccharides.

They parts of antigen molecules that initiate immune responses are called epitopes or antigenic determinants.

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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.