Based on the colligative properties of water, what would happen if one were to add a solute to water?
A. The freezing point of water would decrease.
B. The freezing point of water would increase.
C. The boiling point of water would increase.
D. Both the freezing point of water would decrease and the boiling point of water would increase.
E. Nothing would change with respect to the freezing point or boiling point of water.
D. Both the freezing point of water would decrease and the boiling point of water would increase.
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Based on your knowledge of hydrocarbon degradation, what factors most likely limited the rate of petroleum degradation after the Exxon Valdez oil spill off the coast of Alaska?
A) salt concentration B) temperature C) inorganic nutrient concentrations D) temperature and inorganic nutrient concentrations
The only known "solution" to the loss of efficiency caused by rubisco-oxygenating RuBP is to raise the concentration of CO2 at the enzyme, using ATP generated by the thylakoid. Which of the following is likely most correct of such plants?
A. They are tolerant of shade. B. They require bright, sunny habitats. C. They do not produce O2. D. They do not produce reactive O2 species. E. They require high CO2 levels.
Which of the following statements is true of the photosynthetic structures in bryophytes?
A. Thalloid and leafy species are found in all groups of bryophytes. B. A thallus is a thin stem that supports the leaves of bryophytes. C. Bryophytes have true leaves similar to those found in gymnosperms. D. All hornworts have leaf-like photosynthetic structures. E. All mosses have leaf-like photosynthetic structures.
Voltage-gated channels are:
a. open in a resting neuron but closed during an action potential b. open in a resting neuron and open during an action potential c. closed in a resting neuron but open during an action potential d. closed in a resting neuron and closed during an action potential e. always open