Macromolecules

Which statement is inncorrect about macromolecules?
a. Polypeptides are composed of amino acids linked by amide bonds.
b. RNA is composed of ribonucleotides linked by phospho ester bonds.
c. Carbohydrates polymers are composed of monosaccharides linked by ester bonds.
d. RNA is composed of four diffrent monomers.


Which is not a property of ribosomes?
a. They are an assembely of polypeptides, RNA and DNA.
b. They are found in both prokaryotic and eukaryotic cells.
c. They function as agents in the RNA directed synthesis of polypeptides.
d. They are found in the cytoplasm and as part of the endoplasmic reticulum in eukaryotic cells.