Which of the following statements best describes the relationship between photosynthesis and respiration?
A) Respiration runs the biochemical pathways of photosynthesis in reverse.
B) Photosynthesis stores energy in complex organic molecules; respiration releases energy from complex organic molecules
C) Photosynthesis occurs only in plants; respiration occurs only in animals.
D) Photosynthesis is catabolic; respiration is anabolic.
B
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During which meiotic phases does oogenesis arrest?
A. prophase I and metaphase II B. prophase I and prophase II C. metaphase I and prophase II D. metaphase I and metaphase II E. metaphase I and anaphase II
Mendeleev found that when he arranged the known elements according to their atomic mass, the entries in the table exhibited a pattern of chemical properties that repeated itself in groups of eight elements. This led to the generalization now known as:
A. an atomic model. B. valance electrons. C. the periodic table. D. the octet rule.
________________ is directional growth responses of plants to a unidirectional source of light.
A. Gravitropism B. Thigmotropism C. Dormancy D. Phototropism E. Thermotropism
Cancer cells ____
a. have normal plasma membranes. b. have an increased ability to attach to other cells. c. divide slowly to produce low densities of cells.
d. show an amplified reliance on ATP formation by fermentation. e. are all malignant.