Which mechanoreceptors are found where tactile sensitivities are extremely well developed, and are common at the eyelids, lips, fingertips, nipples, and external genitalia?

The correct answer is - Meissner's corpuscles.

Explanation:

The Meissner's corpuscles are the mechanoreceptors are present in skin at various place in the skin such as eyelids, nipple, fingertips, and genitalia that are extremely well-developed sensitivities for light touch or vibration.

The Meissner's corpuscles are discovered by George Meissner and Rudolf Wagner. These receptors also called tactile corpuscles that are basically a type of nerve ending that is very sensitive to vibration and light touch.

Thus, the correct answer is - Meissner's corpuscles.

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.

i think its the first one