Plant cells are protected from the harmful effects of reactive oxidative molecules by
A) chlorophyll.
B) ATP.
C) mitochondria.
D) carotenoids.
Answer: D
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Photosynthesis
- Which of the following has been a major source of ozone destruction over the past 50 years?
- Ozone
- Which of the following statements about the greenhouse effect is true?
- Global warming due to the greenhouse effect may be
- Plant cells
- Plants use sugars as
- The ultimate source of all the food we eat and the oxygen we breathe is
- The process of photosynthesis arose roughly two billion years ago. Its origin had a huge impact on existing organisms and on the physical characteristics of the biosphere. Which major physical change could be attributed to photosynthesis?
- ATP and NADPH
- Photosynthetic organisms derive their carbon from
- Mitochondria transfer ________ energy from ________ to ATP; chloroplasts transform ________ energy into the chemical energy of ATP.
- Oxygen is the final electron acceptor for cellular respiration. What is the final electron acceptor in photosynthesis?
- The electrons lost from the reaction center of photosystem II are replaced by electrons from
- The primary function of light absorption by photosystems I and II is to produce _____.
- Why are most plants green?
- The full range of electromagnetic energy is called the ________ spectrum.
- Which of the following statements regarding photosynthesis is false?
- The light reactions of photosynthesis include _____.
- What is the source of energy that provides the boost for electrons during photosynthesis?
- Which of the following statements concerning the role of redox reactions in photosynthesis and cellular respiration is true?
- A redox reaction involves the transfer of
- The oxygen released into the air as a product of photosynthesis comes from
- Hydrogen is a leading candidate in the search for a petroleum replacement. However, the hydrogen-generating reaction requires more energy than it produces. Why are plants considered to be one step ahead in the utilization of hydrogen as an alternative fuel source?
- CO2 enters and O2 escapes from a leaf via