In general, what is the effect of the type of medium on diffusion rate?


Answer: Diffusion rate is greater in fluid media than solid.

Biology & Microbiology

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How is a gradient of H+ ions formed across the inner mitochondrial membrane?

A. The electron transport chain uses energy from transfer of an electron donated by NADH to pump H+ across the inner mitochondrial membrane against its electrochemical gradient. B. ATP synthase generates a H+ gradient across the inner mitochondrial membrane. C. Electrons move from NADH to a chain of proteins with lower electronegativities. D. The electron transport chain uses ATP to pump H+ across the inner mitochondria membrane against its electrochemical gradient. E. The electron transport chain of proteins contains pores that are leaky to H+.

Biology & Microbiology

A buffer system

a. makes new hydrogen ions. b. eliminates hydrogen ions already present. c. binds carbon ions. d. releases hydrogen ions. e. produce excess acid.

Biology & Microbiology

Ribbon worms have a unique __________ that is used to capture prey

A. proboscis B. tentacle C. set of jaws D. claw E. forked leg

Biology & Microbiology

The beta lactam nucleus is the basic structure of

A. The Ribosome B. Aminoglycosides C. Chloramphenicol D. Tetracycline E. Penicillin

Biology & Microbiology