Biology Fsc Part 1 Online Test With Answers

Biology Fsc Part 1 Online Test

Sr. # Questions Answers Choice
1 The phenomenon where the products of a process controls the process itself, oftenly limiting the production of more products is called. Feedback activation  Feed forward activation Feed back inhibition Feed forward inhibition
2 Succinic acid and CoA react to form succinyl CoA whcih is catalysed y succinyl CoA. Synthetase Decarboxylase Hydroxylase Reductase
3 Penicilllin permanetly disables the enzymes responsible for building bacterial cell walls becasue it acts as. Irreversible inhibitor Competitive inhibitor Non competitive inhibitor reversible inhibitor
4 Reversibel inhibitors make...................bonds with enzymes. Covalent Ionic Hydrogen  Metallic
5 the mechanism of enzyme inhibition, usedto understand the factors that influence enzyme activity is called. Enzyme kinetics Enzyme dynamics Enzyme pathwology Enzyme energetics
6 The enzyme whcih uses ATP to join molecules. Isomerases Ligases Hydrolases Oxidoreductases
7 In feedback inhibition, the final product inhibits. The 1st enzyme in the pathway The last enzyme in the metabolic pathway No enzyme is inhibited in pathway All enzymes areinhibited in pathway
8 Which of the followign is structurally similar with succinic acid Malonic acid Acetic acid Mavlonic acid Malic acid
9 A none competitive inhibitor binds to. The active site The site other than active site The substrate Catalytic site
10 Which inhibitors are used as antibiotics to kill bacteria. Competitive Irreersible Non competitive non reversible
11 Pick up the irreversible inhibitor Cyanide Aspirin Succinate dehydrogenase Malonate
12 Which of the follow is a potent inhibitor of prostaglandin Aspirin Tetracycline Dispirin Paracetamol
13 Achemicla that interferes and blck an ez=nzyme's activity is called. Inhibitor Activator Accelerator Supressor
14 If enzyme concentratio goes on increasing, and rate of reaction stays constrant ad does not increase further means that. Substrate concentration wasincreased Substrate concentration was the same Less amount of enzymes is active Enzymes have no effect
15 At unlimited substrate concentration at a specific time, rate of reaction directly depends on. Enzyme concentration  substrate concentration  Temperature pH
16 7.0 is the optimum pH of Catalase and urease Urease and source Pepsin and arginase Pancreatic lipase
17 Pepsins's optimum pHis. 1.5- 1.6 4.6 -5.2 8.0 7.8 - 8.7
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