Ribose is a pentose, a simple sugar (monosaccharide) that has five carbon atoms per molecule. It is
synthesized in the body and obtained in small amounts from consumption of ripe fruits and vegetables.
Ribose serves as an energy substrate for the resynthesis of ATP and is a key component of ribonucleic
acid (RNA). Deoxyribose, a component of DNA, also is a pentose.
The optimum pH of pepsin is:
1. 5
2. 7.1
3. 8.1
4. 2 - Ans:✔✔-4
The optimum pH for enzymes varies for different enzymes and even enzymes with similar actions may
have different optimal pH based on where they act. For example, trypsin, a digestive enzyme that acts in
the small intestine has an optimal pH of 8 while pepsin, which acts in the more acidic milieu of the
stomach, has an optimal pH of 2.
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