53-56 The wavelength of X rays is shorter than the wavelength of infrared rays,

Question

53-56

The wavelength of X rays is shorter than the wavelength of infrared rays, Which of the statements is true? A) X rays have more energy than infrared rays have, B) Infrared waves are in the ground state, whereas X rays are in the excited state C) X rays have a different absorption spectrum than do infrared waves D) X rays and infrared waves have the same frequency. E) All of the above. A graph that plots the rate of photosynthesis versus the wavelength of light called A) a Planck equation. B) an absorption spectrum. C) enzyme kinetics. D) an electromagnetic spectrum. E) an action spectrum. Photophosphorylation provides the Calvin-Benson cycle with A) protons and electrons. B) CO_2 and glucose. C) water and photons. D) light and chlorophyll. E) ATP and NADPH. In noncyclic photophosphorylation, the chlorophyll in photosystem I is reduced by A) b_e-f complex. B) nitrogen C) two photons of light. D) NADPH. E) ATP.

Explanation / Answer

1. X-rays and the infrared waves travels by the same speed than frequency or wavelength. The X-rays has more energy than the infrared waves. So, option a is the correct answer.

2. The plot of rate of photosynthesis versus wavelength is called an action spectrum. This graph shows which wavelength of light is most efficiently used in biological reaction. So, the correct answer is option e.

3. Photophosphorylation is defined as the process of formation of ATP from ADP using sunlight. The end products are ATP and NADPH. So, the correct answer is option e.

4. The sequence in non-cylcic photophoshorylation is Photosystem II -->ATP production-->photosystem --> NADPH. The correcr answer is option d.

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