Question

a prokaryotic cell may posses each of the following except: a cell wall a nucleus flagella a cell membrane ribosomes question 39 (1 point) the use of phenol as a wound disinfectant was first practiced by semmelweis koch pasteur lister

Explanation:

Prokaryotic cells lack a true nucleus. They have a cell wall, cell membrane, ribosomes and may have flagella. Joseph Lister first used phenol as a wound - disinfectant. Semmelweis is known for promoting hand - washing to prevent puerperal fever. Koch is known for Koch's postulates. Pasteur made contributions to germ theory and vaccination.

Answer:

First question: B. a nucleus
Second question: D. Lister