How are photosynthesis and aerobic respiration related?
What will be an ideal response?
Light-dependent reactions of photosynthesis convert solar energy to usable chemical energy in the form of ATP, which is used by cells as a primary energy source for cellular reactions. This process extracts electrons from water and produces O2 and hydrogen ions. When excess ATP is produced, photosynthesizers produce carbohydrate from carbon dioxide, using the ATP, electrons, and hydrogen ions produced by the light-dependent reactions. When photosynthetic organisms are unable to convert light energy to chemical energy they can break down the carbohydrates via aerobic respiration, which uses the waste oxygen gas produced by photosynthesis and releases carbon dioxide and water.
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Vector A has a magnitude of 3.0 units and makes an angle of -90.0with the positive x-axis. Vector B has a magnitude of 4.0 units and makes an angle of -120
with the positive x-axis. What is the magnitude of the vector sum of A + B?
A. 1.0 units B. 6.8 units C. 4.0 units D. -6.8 units
The background stars during a solar eclipse are those of constellations
A) of the opposite season. B) seen in the nighttime sky. C) not seen normally. D) seen in the opposite hemisphere.
If 42 g of nitrogen reacts completely with 9 g of hydrogen (atomic mass 1) to form ammonia (NH3), the atomic mass of nitrogen must be
A. 52. B. 3. C. 49. D. 55. E. 14.
A 50.0-kg block is being pushed up a 15.0° slope by a force of 300 N which is directed 30.0° below the slope. The coefficient of kinetic friction between the block and the slope is 0.200. What is the acceleration of the block?
A) 0.164 m/s2 B) 0.967 m/s2 C) 1.20 m/s2 D) 2.20 m/s2 E) 0.528 m/s2