Which of the following statements about the light reactions of photosynthesis are correct?
a) The energy of the sun is captured as potential energy.
b) Pigments absorb light energy, which excites electrons.
c) Carbon dioxide splits, providing a source of electrons.
d) Only a) and c) are correct.
e) Only a) and b) are all correct.
Ans:
a) The energy of the sun is captured as potential energy.
b) Pigments absorb light energy, which excites electrons.
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What will be an ideal response?
____ are likely to provide hints about the earth's early atmosphere
a. Ancient rocks b. Volcanic eruptions c. Ancient rocks and volcanic eruptions d. Meteorites and ancient rocks e. Meteorites, volcanic eruptions, and ancient rocks
In this figure, what do the yellow arrows marked #1 and #2 indicate?
a. light energy b. heat energy c. greenhouse gases d. atmospheric gases e. carbon dioxide
Genetic mutations can have serious effects that are incompatible when they are essential for development. Sometimes chromosomal mutation is survivable, as in the case of trisomy 21. The condition that is caused by these mutations is termed
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