There are more than simply 4 biological compounds in the human body. I suppose to categorise, the question is hinting towards the molecules like Carbohydrates ( Poly and mono saccharides ) Proteins ( Polypeptides Made of amino acids) and Fats. There is also water, but I'm hesitant to class that as a biological compound, as it's not organic.
20.
They told me that my answer was too short so I'm just adding this on, don't mind me.
Answer:
Facilitated diffusion (also known as facilitated transport or passive-mediated transport) is the process of spontaneous passive transport (as opposed to active transport) of molecules or ions across a biological membrane via specific transmembrane integral proteins.
Explanation:
From Wikipedia
Chloroplast , cell walls and centriols can be found in plant cell but not in animal cells.
Answer:
A T A T T C C G T G T A T A A G G C A T C
Explanation:
Thymine pairs with adenine
Guanine pairs with cytosine