Which of the following has the smallest size?

A neutron
A molecule of glucose
An atom of oxygen
A cell


A neutron
Explanation:
Subatomic particles (neutrons, electrons, and protons) combine to form atoms. Atoms combine to form molecules. Billions or even trillions of molecules combine to form cells.

Biology & Microbiology

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Which part(s) of the brain, when impaired by alcohol, play an important role in memory:

A. Nucleus accumbens
B. Hypothalamus
C. Hippocampus
D. All of the above

Biology & Microbiology

A person is exposed to a drug that prevents vesicles from forming in neurons. Predict the effect this will have on nerve function

A) Voltage-gated potassium channels will be blocked, slowing depolarization and slowing nerve impulses. B) Neurons will be hyper-excitable. C) Neurotransmitters won't be released into the synapse via exocytosis. D) Action potentials will not be carried through the axon.

Biology & Microbiology

Denitrification ____

a. converts ammonium to nitrates b. reduces nitrates to nitrites c. reduces ammonia to ammonium d. converts atmospheric nitrogen to ammonia e. converts nitrates to nitrogen gas

Biology & Microbiology

The energy of the electrons passing along the electron transport chain is used to produce ____.

Fill in the blank(s) with the appropriate word(s).

Biology & Microbiology