This kind of mutation causes the wrong amino acid to be used in making a protein.
A. missense
B. nonsense
C. point
D. silent
A. missense
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In what way are monotremes similar to more ancestral chordate lineages, as opposed to more recently evolved mammals?
A) Monotremes lay eggs; other mammals bear live young. B) Monotremes perform little parental care; other mammals use lactation to feed offspring. C) Monotremes do not have jaws; other mammals do. D) Monotremes are ectothermic; other mammals are endothermic. E) Monotremes perform external fertilization; other mammals perform internal fertilization.
Black widows spend their entire lives in their cobwebs, sitting and awaiting predators. When a
prey item stumbles into their web, they rush out quickly to subdue it but tend to fatigue quickly and cannot maintain high levels of activity for long periods. As a result, ____________________.
a. they have mostly fast-twitch muscles b. their muscles have high levels of myoglobin c. they need a constant supply of oxygen for fast contractions d. actin and myosin function without calcium
Based on genetic comparisons,
a. people of different races often have more genetic similarities than many individuals within a race. b. humans have a more ancient origin than chimpanzees. c. there is much genetic diversity among cheetahs. d. among humans, many genetic variations are restricted to certain racial groups. e. there is no difference between different races of humans.
Which of the following is NOT associated with
the light-dependent reaction?
a. ATP b. thylakoids c. chlorophyll d. glucose e. water