A(n) ____________________ contraction occurs when a muscle shortens as it moves a load. Fill in the blank(s) with the appropriate word(s)
ANSWER: isotonic
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Most human embryos that are aneuploid
A. result in Down's syndrome. B. result in sterility. C. are spontaneously aborted in the first trimester. D. can develop and survive to adulthood. E. are usually the result of increased nondisjunction in the gametes of older men.
Which of the following was a scientist around the time of Charles Darwin?
A. Wallace was an evolutionary biologist developing hypotheses about evolution. B. Lyell was a geologist that was examining the age of Earth. C. Lamark was a French naturalist that first explored the idea of evolution. D. All of the above were scientists around the time of Charles Darwin.
Tastes and smells are distinct kinds of environmental information in that _____
A) neural projections from taste receptors reach different parts of the brain than the neural projections from olfactory receptors B) the single area of the cerebral cortex that receives smell and taste signals can distinguish tastes and smells by the pattern of action potentials received C) tastant molecules are airborne, whereas odorant molecules are dissolved in fluids D) distinguishing tastant molecules requires learning, whereas smell discrimination is an innate process
How many distinct nonvascular lineages are there?
A. 3 B. 4 C. 5 D. 6 E. 7