KPK 11th Class Biology Chapter 3 Enzymes Short Questions Answers
KPK 11th Class Biology Chapter 3 Enzymes Short Questions with answers are combined for all 11th class(Intermediate/hssc) Level students.Here You can prepare all Biology Chapter 3 Enzymes short question in unique way and also attempt quiz related to this chapter. Just Click on Short Question and below Answer automatically shown. After each question you can give like/dislike to tell other students how its useful for each.
Class/Subject: 11th Class Biology
Chapter Name: Enzymes
Board: All KPK Boards
- Malakand Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Mardan Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Peshawar Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Swat Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Dera Ismail Khan Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Kohat Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Abbottabad Board 11th Class Biology Chapter 3 Enzymes short questions Answer
- Bannu Board 11th Class Biology Chapter 3 Enzymes short questions Answer
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KPK 11th Class Biology Chapter 3 Enzymes Short Questions Answers
What is a cofactor?
The non-protein part or prosthetic group of an enzymes is called cofactor. Same enzymes are composed of only proteins, while some other have non-protein part or prosthetic group (metal ions) , which is essential for proper functioning of enzymes.
What are metal activators? Give three examples.
Metal activator: When the cofactors (Non-protein part) are metal ions, they are called metal activators. The combine with the enzymes in such a way that the active site becomes functional.
Examples: Iron, zinc (Zn+2) copper (Cu+2) , magnacium (Mg+2) etc are the examples of metal activators.
Differentiate the key difference between the lock and key Model and Induced Fit Hypothesis?
Emil Fischer (1890) proposed lock and key Model According to this model, active site of enzyme is a rigid structure and does not modify or change during the reaction.
Koshland (1959) proposed Induced fit hypothesis. According to this hypothesis, active site of enzyme is not rigid but must undergo a slight change in structure to more specifically accommodate the substrate.
How Ph of a cell affect the enzyme activity?
PH enzyme have an optimum Ph at which they work best Most enzyme function b/w a ph of 7 to 8.
The Ph affects the charge of the amino – acids at the active site, so the properties of the active site change and the substrate can no longer bind.
