Synaptic integration means that:
a. all positive or excitatory stimuli are added together
b. the positive and negative ions neutralize each other
c. excitatory and inhibitory signals are combined in a postsynaptic neuron
d. adjacent neurons interact so that excitatory and inhibitory stimuli cancel each other
e. one neurotransmitter signal is received at a time
c
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Long noncoding RNAs ____
a. are transcribed by RNA polymerase I rather than by RNA polymerase II b. do not have their introns removed c. are missing a 5¢ cap and 3¢ poly(A) tail d. may regulate the expression of protein-coding genes e. encode large proteins
A kidney dialysis machine
a. may cleanse the patient's blood outside the body. b. may use the patient's abdominal cavity as the site for solute exchange. c. may use hemodialysis. d. may use peritoneal dialysis. e. may do all of these
The atomic mass determines the type of element
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Some bacteria, such as Desulfovibrio, are able to reduce sulfates to hydrogen sulfide as the final step in the electron transport chain.
Answer the following statement true (T) or false (F)