Burrowing of the fertilized egg into the endometrium lining of the uterus is called ________
A) ovulation
B) implantation
C) cleavage
D) fertilization
B
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The maintenance of a resting potential in a neuron depends indirectly upon the functioning of the Na+, K+-ATPase pumps in the membrane.
Answer the following statement true (T) or false (F)
Most synapses in our bodies use the ____ neurotransmitter
a. acetylcholine b. dopamine c. epinephrine d. norepinephrine
If a toxic drug inhibited mRNA synthesis, which of the following would be most directly affected?
A. protein synthesis B. intracellular digestion C. active transport D. microtubule production E. secretion of glycoproteins and lipoproteins
In which of the following situations does a resting membrane potential exist?
A. a relaxed muscle fiber B. a conducting neuron C. a stimulated sensory receptor in the skin D. a contracting cardiac muscle cell E. the eye seeing an image