The DNA of a prokaryote is found primarily in

What will be an ideal response?


a single, circular chromosome.

Biology & Microbiology

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Which pathway shows the correct path of electron transfer from a molecule of NADH?

A. NADH hydrogenase ? ubiquinone ? cytochrome oxidase ? cytochrome b-c1 ? cytochrome c ? O2 B. NADH hydrogenase ? ubiquinone ? cytochrome c ? cytochrome b-c1? cytochrome oxidase ? O2 C. ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? NADH hydrogenase ? O2 D. NADH hydrogenase ? ubiquinone ? cytochrome b-c1? cytochrome c ? cytochrome oxidase ? O2 E. ubiquinone ? cytochrome b-c1? cytochrome c ? NADH hydrogenase ? cytochrome oxidase ? O2

Biology & Microbiology

The use of transport proteins to return a neurotransmitter from the synapse back to the presynaptic

cells is called a. enzymatic breakdown. b. diffusion. c. repackaging. d. storage. e. reuptake.

Biology & Microbiology

Vasodilation does what?

What will be an ideal response?

Biology & Microbiology

When a muscle is stimulated prior to full relaxation of a previous contraction and the second stimulus is added to the first contraction, this phenomenon is referred to as ________

A) summation B) twitch C) fatigue D) tetanus

Biology & Microbiology