Answer:
atomic number or atomic mass
Choose and pick may be an example
Food is mixed with protease is the correct answer. Hope this helps :)
I am sorry but you did not include an attachment of the markings
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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