Why do tropical rainforests exist in soils that are nutrient-poor?
A) There is a low rate of decomposition, and plants cannot absorb the "undigested" nutrients.
B) There is a low rate of decomposition, and plants quickly absorb the nutrients as they are available.
C) There is a high rate of decomposition, and plants quickly absorb the nutrients as they are available.
D) The plants cannot use the types of nutrients produced by tropical decomposers.
C
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Prokaryotes, such as bacterial cells, differ from eukaryotes in that eukaryotes
A. lack a membrane-bound nucleus. B. store most of their DNA within the cytoplasm. C. have a simpler structure relative to prokaryotes. D. possess membrane-bound organelles. E. are relatively small compared to prokaryotes.
What must be true when electrons are passed between protein complexes?
a. Electrons are directly passed from one complex to the next by physical contact. b. The oxidized electron carrier passes on the electron and becomes reduced. c. A proton is translocated to the inner mitochondrial space. d. The matrix decreases in pH. e. The reduced electron carrier passes on the electron and becomes oxidized.
Which statement is false concerning carbohydrate fermentation media?
A. Positive carb fermentation is indicated by acid production B. Gas production occurs when a bubble forms in the inner tube C. Negative carb fermentation is indicated by acid production D. They can distinguish both carb fermentation and gas production
With __________, offspring inherit the same number and kinds of genes from one parent.
Fill in the blank(s) with the appropriate word(s).