Answer:
(D) They are all acids
Explanation:
Amino acids are monomers, fatty acids are polymers and they do not contain nitrogen. All four are acidic in nature for different reasons:
- Amino acids due to acidic carboxyl group -COOH.
- Fatty acids due to end chain acidic carboxyl group -COOH.
- Nucleotides because they have phosphate groups (which are acidic in nature).
- Monosaccharides due to presence of aldehyde group -CHO (which can oxidise to -COOH).
The Immune system and Endocrine system work
together to remove these wastes from their cells.
Answer d is the right answer
Vesicles Carry Cargo. Most molecules, including proteins, are too large to pass directly through membranes. Vesicles are constantly forming - especially at the plasma membrane, the ER, and the Golgi. Once formed, vesicles deliver their contents to destinations within or outside of the cell.