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O Level Biology Practice Test 208

Effects of pH on enzymes Quiz Questions PDF Download - 208

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Biology: Effects of pH on enzymes Quiz PDF Download

MCQ: Nature of most intestinal enzymes is

A) acidic
B) alkaline
C) water based
D) mineral based

MCQ: Bacteria capable to produce their own food are known as

A) saprophytes
B) parasites
C) autotrophs
D) penicillin

MCQ: Neutral point like water (H2O) has a pH of

A) 5
B) 6
C) 7
D) 10

MCQ: Under natural conditions, the atmospheric carbon dioxide (CO2) remains stable at

A) 0.0003
B) 0.0006
C) 0.0013
D) 0.0016

MCQ: Intelligence of an animal can be judged through size of

A) brain
B) medulla oblongata
C) Cerebral hemisphere
D) cerebellum

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