Which of the following is not a cause of increased levels of greenhouse gases?
A. All of the answer options are correct.
B. burning of fossil fuels
C. increasing cattle populations
D. expansion of rice paddies
E. thawing of the permafrost in the tundra
A
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The effects of most antimicrobial drugs are greater if the microorganisms are actively growing.
Answer the following statement true (T) or false (F)
The molecule that rapidly replenishes ATP at the beginning of muscle activity is
A. actin. B. creatine phosphate. C. dystrophin. D. acetylcholine. E. myosin.
This enzyme cleaves both strands of DNA, swivels the ends of the broken strands to relieve the torsional stress, and then rejoins the strands.
A. gyrase B. ligase C. ribonuclease D. catalase E. helicase
Three (3) eggs are boiled and all weigh 2g. The eggs are placed in a 15% solution of NaCl and reweighed after 30 minutes.
When compared to the solution, the egg that gained weight was ________.
A. hypotonic B. isotonic C. hypertonic