Which molecule is believed to have preceded the other two during the evolution of life?
A. DNA
B. RNA
C. Proteins
Answer: B
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Animals trapped and digested by "carnivorous" plants such as the cobra lily are used primarily as ____
a. an energy supplement during winter months b. a carbon source for the plant c. a nutrient supplement in nutrient-deficient environments d. food for bacteria and fungi that grow symbiotically with the plant roots e. an energy supplement for small plants growing in shady areas
In deductive reasoning, specific observations may be used to draw a broad, general conclusion
a. true b. false
Some botanists argue that the entire plant should be considered as a single unit rather than a composite of many individual cells. Which of the following cellular structures cannot be used to support this view?
A) cell wall B) cell membrane C) cytosol D) tonoplast E) symplast
The biological diversity encountered increases as one moves from the poles to the tropics. Within a particular latitude, diversity also varies:
A) between different continents B) between different habitats C) as a function of temperature and precipitation D) as a function of topographic complexity E) all of the above