IGCSE A Level Biology Practice Test 84

What Are Enzymes Multiple Choice Questions (MCQ) PDF - 84

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What Are Enzymes Questions and Answers PDF Download: Quiz 84

MCQ 416: Nature of pepsin is slightly

A) acidic

B) alkaline

C) neutral

D) none of others

MCQ 417: Building up and breaking down reactions can be called as

A) substrate and hydrate reactions

B) synthesis and hydratic reactions

C) synthesis and hydrolysis reactions

D) synchronizing and hyperactive reactions

MCQ 418: The killer of bacteria of a sick person is an

A) antivirus

B) antifungal

C) antibody

D) antibacterial

MCQ 419: The annual worldwide incidence of cholera is

A) 1-2 million

B) 1-3 million

C) 1-5 million

D) 3 -5 million

MCQ 420: Blood in pulmonary arteries is at a lower pressure than blood in aorta allowing

A) tricuspid valve to shut

B) bicuspid valve to shut

C) gaseous exchange to effectively take place in lungs

D) semi lunar valves to prevent backflow of blood

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