A scientist studies the nucleus of a eukaryotic cell and concludes that the nucleus contains double helical DNA composed of many genes. What other conclusion is also supported by the study?

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.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

the fossil record provides evidence of a common ancestor to many species.