In which form does energy enter the ecosystem?
a. chemical energy
b. heat
c. light energy
d. magnetic energy
Ans: c. light energy
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Which of the following genetic processes may be most helpful in accounting for the Cambrian explosion?
A) binary fission B) mitosis C) random segregation D) gene duplication E) chromosomal condensation
A survivorship curve with uniform death rates over time is most likely to be a type _______ curve.
A. I B. II C. III D. IV E. V
Which of the following will denature an enzyme?
a. temperature b. humidity c. barometric pressure d. oxygen availability
What is the difference between vitamins and minerals?
A. Vitamins cannot be made by our bodies, while minerals can. B. Vitamins are organic nutrients, while minerals are inorganic nutrients. C. Vitamins are inorganic nutrients, while minerals are organic nutrients. D. There are no main difference between vitamins and minerals.