When the net charge on either side of the plasma membrane is zero, what else is true?
(a) There is an equal number of K+ ions on each side of the plasma membrane.
(b) The K+ leak channels are open.
(c) The electrochemical potential across the membrane is zero.
(d) The resting membrane potential is between –20 mV and –200 mV.
(c)
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Answer the following statement true (T) or false (F)
What situation below is best characterized as interference competition?
A. A barnacle living on the tail of a humpback whale. B. Viruses that infect bird species. C. Cattle and deer grazing on the same grasses. D. Insects that use rabbit warrens for shelter. E. A tiger that excludes other tigers from its territory.
What part of the brain is highly developed in animals that have finely tuned balance and complex coordination?
A) cerebellum B) medulla C) thalamus D) temporal lobe
How do transfer RNAs (tRNAs) bring the correct amino acid to the growing polypeptide?