MCQs is one of the best ways to test a student’s comprehension of a concept. Academic Task subject experts have prepared these Biology MCQs based on current trends and practices. Most repeated general science Biology MCQs section, frequently encountered in GAT, NAT, GRE, SAT, MCAT Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams or tests as well as government and private job assessments. The content of qurumcqs.com is updated regularly, with the addition of new topics, more questions, and useful links. Medical biology most repeated MCQs include all topics like Basic Biology MCQs for Entry Test, MCQ on Cell Signaling, MCQ on Mollusca, MCQ on Mollusca, MCQ on Respiratory System, MCQ on Nutrition in Plants, MCQ on Vitamins, MCQ on Plant Tissue Culture, MCQ on Bioinformatics, MCQ on Food Microbiology, MCQ on Food Microbiology, Human Health and Disease, Genetics, etc.
91. If more substrate to already occurring enzymatic reaction is added and there is no effect on the rate of the reaction what is the form given to this situation___________?
A. Saturation
B. Denaturation
C. Composition
D. Inhibition
92. Who opposed the idea the cell is an empty space bounded by thick wall?
A. Lorenz Oken
B. Schwann
C. Robert Brown
D. Rudolph Virchow
93. Extreme change in pH results in______________?
A. Change in ionization of amino acids at the active site of the enzyme
B. Change in the ionization of the substrate
C. Denaturation of the enzyme
D. Increase in the reaction rate
94. Resolution power of a compound microscope is___________?
A. 2.0 ?m
B. 2-4 A
C. 24 ?m
D. 24 A
95. Excessive increase in temperature of medium causes the enzyme molecule to____________?
A. Activate
B. Unaffected
C. Denatured
D. None of these
96. If enzyme concentration is low than substrate pH and temperature values are equal to requirement then which of the following will increase rate of reaction____________________?
A. increase in concentration of enzyme
B. increase in concentration of substrate
C. increase in pH
D. increase in temperature
97. In cell fractionation various components of cells including its organelles can be isolated in different layers depending upon____________?
A. Their physical properties like size & weight.
B. Physical properties of the medium like its density.
C. Their electrical properties like their charges
D. Both a and b
98. The structure of an enzyme is altered by____________?
A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor
99. Malonic acid is an example of____________?
A. Irreversible inhibitor
B. Reversible inhibitor
C. Competitive inhibitor
D. Non-competitive inhibitor
100. Magnifying power of electron microscope as compared to eye is____________?
A. 500 X
B. 250000X
C. 500000X
D. 250X