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Physics Chapters

11th Class Chapter six Physics Long Questions

Dear students, prepare for physics class 11th chapter six long questions. These important long questions are carefully added to get you best preparation for your 11th class physics ch. six exams.
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Question: 1
Describe the categories of the enzymes .
Answer: 1
1-6
Enzymes can be categorized on the basis of the site where they work
a: Intracellular
b: Extracellular
a: Intracellular enzymes : The type of enzymes which working inside of the cytoplasm
Example : Enzymes of Glycolysis
Question: 2
Explain characteristics if enzymes .
Answer: 2
2-6
In 1878 , German physiologist Winhelm Kuhne first used the term enzyme . Enzyme possess the following major characteristics
-Enzymes are globular proteins
-Like all proteins , enzymes are made of long ,linear chains of amino acids that fold to produce a three -dimensional molecule
-Most enzyme reaction rates are million of times faster than those of comparable uncatalyzed reaction
Question: 3
Write industrial uses of enzymes .
Answer: 3
3-6
Uses of enzymes : Enzymes are extensively used in different industries for fast chemical reaction

Food industry : Enzymes that break starch into simple sugars are used in the production of white bread ,buns etc (Amylase)
Brewing Industry : Enzymes break starch to lower its viscosity that aids in making paper

Question: 4
Which factors effect the rate of enzyme action ?
Answer: 4
4-6
Enzymes are very sensitive biomolecule to the environment in which they work . Any factor which can alter the chemistry and shape of the enzyme , affects the activity of the enzymes . Some of these factors which affect the rate of enzyme action are described below :

1: Temperature
2: Substrate concentration
3:pH

Question: 5
Explain mechanism of enzyme action
Answer: 5
5-6
Mechanism of enzyme action : When enzyme attaches with substrate , a temporary enzymes substrate (ES) complex is formed . Enzymes catalyzes the reaction and substrate is transformed into product . After it the ES complex breaks and enzymes and produce are released . There are following models which explain mechanism of enzyme action

E+ S↦ ES complex↦E+P

Question: 6
What is specificity of enzymes ?
Answer: 6
6-6
There are 2000 enzymes are known and each of them is specialized to carry out one specific reaction . Enzymes are also substrate specific

Example :
-The protease enzyme (which catalyze the breakdown of peptide bonds in protein )will not work on any other molecules such as starch
-Amylase enzyme breakdown starch
- This specificity of different enzymes is determined by the shapes of their active sites
The active sites possess some specific geometric shapes that fit with the specific substrate only