| 1 |
Lock and key model was proposed by: |
- A. Emil Fischer
- B. Melcher
- C. Koshland
- D. Saugeo
|
| 2 |
When we add more substrate to an already occuring enzymatic reaction and there is no increase in the rate of reaction, what would you predict? |
- A. All actives sites have been occupied by substrate molecules
- B. The enzyme molecule have denatured
- C. More substrate acted as inhibitor
- D. More substrate has disturbed has disturbed the pH of the medium
|
| 3 |
Which of the following variable is least likely to affect an enzymes rate of reaction? |
- A. Temperature
- B. pH
- C. Carbon dioxide concentration
- D. Enzyme concentration
|
| 4 |
What is True about enzymes? |
- A. They make biochemical reactions to proceed spontaneously
- B. They lower the activation energy of a reaction
- C. They are not very specific in their choice of substrates
- D. They are needed in large quantities
|
| 5 |
An enzyme, which breaks down starch is: |
- A. Protease
- B. Amylase
- C. Tripsn
- D. Lipase
|
| 6 |
Optimum temperature for enzymes of human body is: |
- A. 86<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
- B. 37<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
- C. 38<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
- D. 39<span style="color: rgb(84, 84, 84); font-family: arial, sans-serif; font-size: small;">°C</span>
|
| 7 |
Which enzyme breaks the peptide bods: |
- A. Amylase
- B. Protease
- C. Lipase
- D. None
|
| 8 |
To what category of molecules do enzymes belong? |
- A. Carbohydrates
- B. Lipids
- C. Nucleic acids
- D. Proteins
|
| 9 |
The building units of enzymes are: |
- A. Fatty acids
- B. Glycerol
- C. Nucleic acid
- D. Amino acid
|
| 10 |
All enzymes are composed of: |
- A. Lipids
- B. Carbohydrates
- C. Proteins
- D. Phosphates
|
