At the time life first evolved on earth:
a) there was more oxygen and less methane in the atmosphere than there is today.
b) there was less oxygen and more methane in the atmosphere than there is today.
c) there was less oxygen and less methane in the atmosphere than there is today.
d) the amounts of oxygen and methane in the atmosphere were the same as today.
e) None of the above is correct.
Ans: b) there was less oxygen and more methane in the atmosphere than there is today.
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A) 8 B) 4 C) 6 D) 3
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If you were to add one of the eight citric acid cycle intermediates to the culture medium of yeast growing in the laboratory, what do you think would happen to the rates of ATP and carbon dioxide production?
A) There would be no change in ATP production, but we would observe an increased rate of carbon dioxide production. B) The rates of ATP production and carbon dioxide production would both increase. C) The rate of ATP production would decrease, but the rate of carbon dioxide production would increase. D) Rates of ATP and carbon dioxide production would probably both decrease.
Compare the key differences between microevolution and macroevolution.
What will be an ideal response?