In humans, digestion of starch begins in the
a) esophagus.
b) duodenum.
c) mouth.
d) stomach.
e) large intestine.
Ans: c) mouth.
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Which of the following is not predicted to occur due to increasing levels of atmospheric carbon?
1.Rises in ocean level 2.Ocean acidification 3.Disruption of regional patterns of rainfall and temperature 4.All of these are predicted results.
The most significant finding from the "split brain" patients studied by Roger Sperry and his collaborators was that
A. in most human brains, the left hemisphere is specialized for processing verbal and symbolic material; the right hemisphere is specialized for visuospatial and emotional processing. B. the right and left hemispheres are mirror images of each other and equally dominant in producing and understanding language in humans. C. to evaluate the functional capacity of each hemisphere in split-brain patients, it is essential to provide information to one side of the brain only. D. the severing of the corpus callosum is a necessary and effective remedy for halting grand mal seizures in epilepsy.
In genetic goitrous cretinism, the phenotype is caused by accumulation of thyroid hormone and its breakdown products
a. True b. False
Iron is an important element in human body cells. If iron has an atomic number of 26, what does this tell you about this element?
A) An iron atom has 13 electrons and 13 protons. B) An iron atom is unable to become an isotope. C) An iron atom has 26 protons. D) An iron atom has 13 protons and 13 neutrons.