A)the monomers that make up proteins are amino acids( you could talk about the central dogma here but idk if you have to). remember central dogma is dna to mRNA then mRNA to amino acids and amino acids to proteins.
nucleic acid is made of the monomers nucleotides ( cytosine, thymine, adenine, and guanine). this is basically DNA
The heart, it pumps blood and oxygen all over your body
This is a negative feedback. A negative feedback is where the body detects a change in the body's internal environment and crafts a mechanism to correct it
It would be a 50% or 1/2 chance.
