Answer:
There are three amino acids that have basic side chains at neutral pH. These are arginine (Arg), lysine (Lys), and histidine (His). Their side chains contain nitrogen and resemble ammonia, which is a base. Their pKa's are high enough that they tend to bind protons, gaining a positive charge in the process.
Explanation:
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Their mitochondria do not have an electron trasnport chain and so cannot funciton in aerobic respiration.
Electron Transport Chain (ETC) essentially makes the energy required for respiration.
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