Which one of the following regions of atmosphere contains ozone?
Correct answer: D. Stratosphere
- A. Troposphere
- B. Thermosphere
- C. Mesosphere
- D. Stratosphere
Explanation
Ozone is present in stratosphere and protect us from harmful ultraviolet radiations. Stratosphere is present about 20-25 km above the earth surface.
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About Biological Molecules
The chapter covers water's polarity and biological roles, carbohydrates, lipids, proteins and nucleic acids, including their monomers, bonds, structures and functions. It also distinguishes RNA from DNA and explains conjugated molecules such as glycoproteins, glycolipids and nucleoproteins, which combine organic molecules with a non-protein component.
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