A little over 50% of the total amount of DNA in a human cell consists of genes.
Answer the following statement true (T) or false (F)
False
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The strength of a stimulus is coded by the ____
a. strength of action potentials b. frequency of action potentials c. duration of the resting period d. duration of the refractory periods e. frequency of salutatory periods
Researchers have found that on the island of Mangaia:
A. experiencing three orgasms per night is typical across the lifespan. B. older women and men instruct young boys in sexual matters. C. older men instruct young girls in sexual matters. D. older men do not have sex.
Which structure is not a motor center?
a. caudate nucleus b. hippocampus c. insula d. substantia nigra
A substance that interferes with the active transport of Na+ in the cortical collecting ducts will also interfere with K+ reabsorption
Indicate whether the statement is true or false.