1. RNA has ribose sugar instead of deoxyribose
2. RNA is generally single-stranded instead of double-stranded
3. RNA contains uracil in place of thymine
Explanation:
Free amino acid do not have a peptide bond , as the amino acid act as a monomer which multiplies and linked via peptide bond to generate protein chain .
A free amino acid have a carbonly group (- COOH ) and a -NH₂ group .
The formation of protein chain require at least two amino acids linked via peptide chain .
The role of peptide chain only comes in case of protein , because it acts as a linking species .
Hence , free amino acid does not have any peptide chain .
<span>Vertebrates that are endothermic are birds and mammals. Endothermic organisms are able to regulate their own body temperature while ectothermic organisms depend on the temperature of the environment. Birds and mammals are endothermic organisms. Fish, amphibians, and reptiles are ectothermic organisms.</span>
