Clover will flower if exposed to 8 hours of dark and 16 hours of light. It will not flower if exposed to 16 hours of dark and 8 hours of light. However, if the 16 hours of dark is interrupted with a brief period of light, the clover will flower. Which of the following will trigger clover to flower?
A. None of the answer choices is correct.
B. short light periods
C. long dark periods
D. short dark periods
E. long light periods
D. short dark periods
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Bacterial cells are placed into a 250mL liquid growth medium in a closed laboratory flask. According to Malthusian theory, they will reproduce exponentially and then:
A. continue reproducing geometrically as long as there are no limitations on food supply. B. continue reproducing arithmetically as long as there are no limitations on food supply. C. continue reproducing arithmetically until the food supply is used up, then they will cease to grow. D. continue reproducing geometrically until the food supply is used up, then they will cease to grow.
Which of the following statements about lipids is FALSE?
a. They are hydrophobic. b. They are composed of C and H atoms linked by nonpolar covalent bonds. c. They are soluble in water. d. There are four major groups of lipids.
Most of the exchange surfaces of multicellular animals are lined with _____
A) connective tissue B) smooth muscle cells C) neural tissue D) epithelial tissue E) adipose tissue
The Calvin Cycle can only produce sugar if ______can enter through the pores of the leaves.
A. O2 B. CO2 C. water D. potassium E. N2