What effect would a decrease in the amount of greenhouse gases in Earth's atmosphere have?
A) cooler average global temperatures
B) warmer average global temperatures
C) no change in average global temperatures
D) cooler temperatures in the northern hemisphere and warmer temperatures in the southern hemisphere
A
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Two strands of DNA that have been cut by an endonuclease can be sealed together by a(n)
A. polymerase enzyme. B. ligase enzyme. C. exonuclease enzyme. D. protease enzyme. E. methylase enzyme.
Which correctly represents the sequence of steps involved to convey sensory information to the CNS?
A. stimulation and ion flow through the synaptic cleft B. neurotransmitter release and interpretation C. neurotransmitter release and ion flow through the synaptic cleft D. stimulation, transduction, transmission, and interpretation E. stimulation, transmission, and neurotransmitter release
What is the leading cause of age-related blindness in the United States?
a. Macular degeneration b. Glaucoma c. Lack of focus d. Cataract e. Colorblindness
How can it be determined whether a mutant that constitutively expresses the lac genes has a mutation that inactivates the repressor or a mutation in the operator?
What will be an ideal response?