Organisms able to make food molecules from inorganic materials and sun energy are
A. autotrophs.
B. aerobic.
C. anaerobic.
D. heterotrophs.
A. autotrophs.
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Three hypothetical phosphorylated compounds (A, B, and C) are involved in energy metabolism. Standard free energies of hydrolysis for A = 13.1 kcal/mol, for B = -2.7 kcal/mol, and for C = 6.7 kcal/mol. What is the sequence in which these molecules could most exergonically phosphorylate?
A) A, B, C B) A, C, B C) B, C, A D) C, B, A E) C followed by A or B
Arthropods have which of the following features?
a. an open circulatory system b. a three-chambered heart c. a mantle cavity d. a radula
The disease osteoporosis involves loss of both mineral and organic components from bones. Factors that may contribute to the development of osteoporosis include
A. lack of calcium and vitamin D in the diet. B. excess fat in the diet. C. prolonged disuse of muscles. D. a history of extreme sport participation. E. a decline in estrogen following menopause in women.
Dense coastal fog is characteristic of the temperate deciduous forest biome
____________________ Indicate whether the statement is true or false.