Which of the following examples best describes how geoengineering may help mitigate global climate change?
A. genetically engineering plants to decrease their uptake of carbon dioxide, helping to allow carbon dioxide to be sequestered in the atmosphere
B. developing ways to create carbon sources out of the soil and ocean so that carbon is cycled more rapidly
C. genetically engineering plants to require more water for photosynthesis to occur
D. developing ways to reflect portions of solar energy before they reach the earth, preventing it from contributing to the greenhouse effect
Answer: D
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DNA participates in protein synthesis through
A) cyclic messengers. B) direct pairing with amino acids. C) an RNA intermediate. D) protein folding.
What is the key concept addressed by the question?
What will be an ideal response?
How do negative regulators such as the Lac repressor prevent RNA polymerase from initiating transcription?
A) by blocking the ribosome binding site B) by forming a loop in the operator that restricts the passage of the polymerase C) by physically blocking the DNA binding site of RNA polymerase D) by binding to the polymerase to inhibit its catalytic activity
What is an advantage of closed circulatory systems?
What will be an ideal response?