Any substance that when dissolved in water will give off H+ ions is referred to as a(n) ________
A) catalyst B) pH C) acid D) buffer
Answer: C
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Evaporation from the Earth's surface is determined by all of the following except:
A. wind. B. solar radiation. C. soil acidity. D. altitude. E. precipitation.
A normal heartbeat is not set or initiated by the nervous system, which may be expected since the heart has electrical activity. If not the nervous system, then what actually regulates or initiates a normal heartbeat?
What will be an ideal response?
Which type of organism would exhibit optimum growth at room temperature?
A) Psychrophiles B) Psychrotrophs C) Mesophiles D) Thermophiles
You have been assigned to analyze some extraterrestrial material recently collected from Mars. After examining a sample using a microscope, you jump up excitedly and shout to your colleagues that you have confirmed the existence of life on Mars. One of your colleagues takes a look at your sample and remarks that all he sees is a single-celled "blob" with little internal structure. Assuming that life on Mars can be classified into similar domains and kingdoms as Earth, to which domain does your "blob" belong?
A. Protista B. Archaea C. Fungi D. Animalia