Biology Fsc Part 1 Online Test With Answers

Biology Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 Lock and key model of enzyme mechanism was proposed by  Emil Fisher Norman Haworth Daniel Koshland F-Sanger
2 In complez metaboic pathways, end products formed inhibit the. First enzyme First substrate First product Last enzyme
3 Activation energy is lowered by  Bringing reactants together in correct orientation Stressing particular chemical bonds of reactants Stabilizing bonds of substrate Both a and b
4 Catalytic site is adtivatid when  enzyme inhibitor complex is formed ES complex is formed Subsgtrate attaches at allosteric site Spontaneously
5 Which of the following is correct about enzymes. Enzymes increase the activation energy The presene of enxymes does not affet the natur eor properties of end products Enxymes are synthesized y endocrine cells Enxymes are fibrous proteins
6 the energy which works to destabilize existing chemical bonds is called. Dectivation energy Activation energy Ionization energy Potential energy
7 The speed of a chemicla reaction depends on the amount of. ATP H-ions Substrte Activation energy
8 When food is oxidized in cell, enxymes draw electrons from food molecules and transfer them to. Nicotinamide Adenine Dinucleotide Nicotinamide Ganine dinucleotide Nicotinamide cytosine dinucletide Nicotinamide Thymine Dinucleotide
9 The most important coenzyme in a cell is the hydrogen acceptor. NAD ATP FADH2 Co -enzyme Q
10 Co enzyms participate in enzyme catalyzed reactions, ofter by transporting . Electrons Hydrogen atoms Phosphate groups Both a and b
11 When the co factor is a non protein organic molccule and is loosely attached with enxyme it is called. Allosteric enzyme Co enzyme Prostheitc group Zymogen
12 Prosthetic groups are attached with enzyme by  Hydrogen bond Ionic bond Covalent bond Hydrophobic interaction 
13 The cofactos which are attached with enxyme by convalent bonds are called. allosteric enxym Apoenzyme Prosthtic group Proenzyme
14 The complete enzyme ncluding its coensyme or prosthtiec grop is termed as Apoenzyme Ribozyme Holoenzyme Proenzyme
15 The protine part of enzyme is called. Apoenzyme Co enxyme Prothetic group Hologenzyme
16 The kinds or types of co factor are. One Two Three Four
17 the non protein components of enzyme are called. Co factor Transductor Messenger Both a and b
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