Biology Fsc Part 1 Online Test With Answers

Biology Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 Pepsins's optimum pHis. 1.5- 1.6 4.6 -5.2 8.0 7.8 - 8.7
2 Pepain works in  Acidic pH Alkaline media Low pH All of above
3 the enzymes papain is present in  Yellow papaya Green papaya Red papaya blue papaya
4 Pepsin works its best in. Acidic medium Low pH High pH Both a and b
5 The pH at whcih an enzyme works at maximum rate is called. Maximum pH Optimum pH Average pH Top pH
6 A slight increase or decreasein pH of an enzyme causes. Incresse in enzyme activity Decrese in enzyme activity No effect on enzyme activity  All of above
7 The loss of gloular shape of enzyme is called. Saturation  Renaturation  Denaturation  Flexion
8 The enzyme of thermophilic bacterial can function at. 70 oC 170 oC 210 oC 340 oC
9 When the temperature of body falls below 37.0 oC the bonds that determine enzymes shape becomes. Less flexible More hard Less hard More flexible
10 The optimum temperature for human enzymes is. 37.0 oC 37.8 oC 36.1 oC 36.5 oC
11 The temperature at which an enzyme works at its maximum rate is called. Specific temperature Maximum temperature Optimum temperature Initial temperature
12 Which of thefollowing can be affected by temperatur ein an enzyme Hydrogen bond Hydrophobic interaction  Hydrophilic interaction  Both a and b
13 Which of the following can affect enzyme activity pH Temperature Enzyme concentration  All of above
14 Which of the following represent induced fit model When substrate combines with the binding site,it induces change in enzyme structure Active site is not a rigid structure It is modified form of lock and key model All of above
15 The induced fit model was modified form of lock and key model was proposed by  Daniel Koshland Danieal Standford Emil Fischer Van Neil
16 Lock and key modl was proposed by Emil Fischer in. 1890 1882 1958 1894
17 Emil Fischer proposed that, Activesite is rigid Active site is flexible Active site undergomodification  All of above
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