Breakdown of _____ produces ammonia
a. carbohydrates c. proteins
b. nucleic acids d. nucleic acids and proteins
D
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Temperature is perhaps the most important factor in the distribution of organisms because
A. water is scarcer in warmer environments. B. most organisms are unable to regulate their body temperature precisely. C. many organisms are able to grow faster in warmer climates. D. the metabolic optimum for endothermic animals is in temperate areas. E. wind amplifies the effect of cool temperatures.
This image depicts a
1.neurotransmitter carrying a signal across a neuromuscular junction.
2.bacterial infection in the nerve endings.
3.synapse.
4.all of the choices
The word evolution, as used in biology, literally means
a. natural selection. b. genetic drift. c. divergence. d. genetic change. e. mutation.
In the polymerase chain reaction, what is the purpose of the initial high temperature? What is the purpose of cooling in the second step?
What will be an ideal response?