Which of the following molecules would not readily cross an intact cell membrane by simple diffusion?

A) water
B) glucose
C) oxygen
D) fatty acids
E) ethanol


B) glucose

Biology & Microbiology

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Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?

What will be an ideal response?

Biology & Microbiology

Terpenes include

_____ the anti-cancer agent taxol. _____ the insect repellent citronella. _____ rubber. _____ polyvinyl. _____ turpentine. _____ caffeine.

Biology & Microbiology

Antibiotics have ____ cells as their targets. 

A. animal B. eukaryotic C. fungus D. bacterial

Biology & Microbiology

Surfactants function as microbicidal agents because they do what to microorganisms?

A) Inhibit peptide bond formation during translation B) Interfere with the synthesis of peptidoglycan C) Prevent mRNA transcription D) Denature proteins E) Disrupt the integrity and lower the surface tension of cell membranes

Biology & Microbiology