Which of the following lowers the efficiency of plants' conversion of sunlight into chemical energy?
A. UV light
B. UV light and O2
C. UV light, O2, and heat dissipation
D. O2 and heat dissipation
E. UV light and heat dissipation
C
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Photosystems are mainly
a. light-trapping molecules. b. enzymes for splitting water. c. clusters of ATP molecules. d. sugar assembly sites. e. electron transport systems.
Which cells complete their maturation in the bone marrow?
A. T cell B. B cell C. monocyte D. mast cell E. natural killer cell
What is true of eudicots but not monocots?
A. eudicots have venation that is parallel to the leaf axis B. eudicots have flower parts usually in multiples of four or five C. eudicots have vascular bundles scattered in their stems D. eudicots have stomatal pores but monocots do not E. eudicots have true seed leaves but monocots do not
When water evaporates from the ocean, it leaves the salts behind.
Answer the following statement true (T) or false (F)