Osteons run perpendicular to the diaphysis of a long bone.
a. True
b. False

False.

Explanation:

Osteons does not run perpendicular to the diaphysis of a long bone because osteons runs parallel to the long axis of the bone and it is a structural unit of cortical bone which contain lamillae, a bone layer that surrond the hollow passageway called Harvesian canal and this canal contain blood vessels that supply blood to osteocytes.

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.

haploid cells;