Question

3. A Nucleic acid is a polymer made up of which kind of monomers? a) modified glucose and phosphate. b) a modified sugar, a phosphate and an amino acids, c), a 5-C sugar and phosphate groups, d) fatty acids and glycerol, e) a nucleotides. 4. WhenCV and H' react to form CH, the number of electrons involved in bonding is? a) 1, b) 2, c) 6. d) 8. e) 4. 5. Serine is an amino acid in which the elements are covalently bonded and that exhibits polar properties. One would expect that: a) one one or more of the atoms is more electronegative than others. b) These atoms do not share the electrons. c) some of the atoms completely capture electron(s) from the other atoms, d) some of the atoms lose protons to the other atoms, e) none are true 6. If Aspartate, an amino acid, interacts with H,O to dissolve and form an aqueous (water) solution. It a) is hydrophobic, b) Interacts with the partial plus and/or minus charges of the water molecule, c) forms a crystal or solid, d) forms a covalent bond with water, e) evolves

Answer 1

3. e. Nucleotides (nitrogenous base, pentose sugar and phosphate group) rest of the options are not having complete set.

4. d. 8 (total eight electron involved in this process, 4 by one carbon and 4 hydrogen, in total 8, forms octet; 1 bond is carrying 2 electrons)

5. d. "some of the atoms lose protons to the other atoms" (association or dissociation with carboxyl group; they are polar and without any charge, hydrophilic in nature).

6.b "interacts with the partial plus and/or minus charges of the water molecule". Other options are unappropriate for Aspartate