Can you please answer those questions ?

Question 18 1 pts The functional groups 1-4 highlighted in the antibacterial agent Penicillin V (shown below) are; DO Me "Me 4 H COOH 1) Phenol 2) Keto Amine 3) Ether 4) Ester 1) Primary Alcohol 2) Secondary Amine 3) Thiol 4) Ketone 1) Ether 2) Secondary Amide 3) Thioether 4) Tertiary Amide 1) Ether 2) Primary Amide 3) Thioether 4) Primary Amide 2 > Question 19 1 pts Which of the following statements about the relationship between the partition coefficient, P (or logP) and bioavailability is/are most CORRECT? At very low logP, poor bioavailability is mostly a result of a very hydrophilic drug a not being able to cross biological membranes. A and B are both CORRECT. At very high logP, poor bioavailability is mostly a result of a very hydrophobic drug not being soluble in biological fluids. Biovailability is not influenced by logp. 1 pts Question 20 The hydrophilic / hydrophobic nature of functional groups 1-4 highlighted in the structure of Penicillin V is; Me Me H COOH 4 1) Hydrophobic 2) Hydrophobic 3) Hydrophilic 4) Hydrophilic 1) Hydrophilic 2) Hydrophilic 3) Hydrophobic 4) Hydrophilic 1) Hydrophobic 2) Hydrophilic 3) Hydrophobic 4) Hydrophilic O 1) Hydrophilic 2) Hydrophobic 3) Hydrophobic 4) Hydrophilic 3)