A researcher adds an enzyme to a sample of human DNA to see if the DNA changes. Which result would best support the conclusion that the
enzyme had no effect on the DNA?
.
A. The DNA has uracil bases.
B. The DNA has unpaired nitrogenous bases.
C. The DNA has a single strand with nucleotides and a sugar-phosphate backbone.
D. The DNA has a double helix shape with nucleotide pairs and sugar-phosphate
backbones.

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.

✿   this landform has a high elevation and a high relief

✿   this landform is a mountain

i was thinking 4.0 v hope this