Which of the following correctly describes the image below? (2 points) a single hydrogen atom bonded to a central carbon atom. an amino group and a carboxylic acid group both bonded to the central carbon atom. a side chain group, represented by the variable r, is attached to the central carbon atom. select one: a. protein molecule b. rna molecule c. amino acid d. carboxylic acid

C

An amino acid has a central carbon atom surrounded by a hydrogen atom, a carboxyl group (-COOH) , an amino group(-NH2) and an alkyl group(-R).  Hence if an a molecule has a singlt hydrogen atom which is bonded to a central carbon atom, an amino group and a carboxyl group both bonded to the same carbon atom, a R group which is also attached to the central carbon atom, the molecule is an amino acid(a monomer).

The answer would be c). amino acids

water is a polar molecule. a chemical bond is a force of attraction between atoms or ions. bonds form when atoms share or transfer valence electrons. atoms form chemical bonds to achieve a full outer energy level, which is the most stable arrangement of electrons. so, false

explanation:

in h2o molecule, two water molecules are bonded by a hydrogen bond but the bond between two h - o bonds within a water molecule are covalent. the greater the electronegativity difference, the more ionic the bond is. bonds that are partly ionic are called polar covalent bonds. nonpolar covalent bonds, with equal sharing of the bond electrons, arise when the electronegativities of the two atoms are equal.