IGCSE O Level Biology Practice Test 40

O Level Biology Questions Multiple Choice Questions (MCQ) PDF - 40

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O Level Biology Questions Questions and Answers PDF Download: Quiz 40

MCQ 196: Breakage of hydrogen bonds in protein coils results in

A) activation of enzymes

B) denaturation of proteins

C) expedites the digestive system

D) inactivation of protein molecules

MCQ 197: Transfer of genes from one species to another can be studied through

A) bacteria

B) vectors

C) fungi

D) algae

MCQ 198: Water-soluble vitamins are

A) stored in body

B) excreted by body

C) released by the body muscles

D) released by bone-marrow

MCQ 199: Glucose (C₆H₁₂O₆) and fructose (C₆H₁₂O₆) can be obtained if sucrose (C₁₂H₂₂O₁₁) is heated in the presence of

A) dilute hydrogen sulphide

B) dilute hydrogen peroxide

C) dilute hydrochloric acid

D) dilute sulphuric acid

MCQ 200: In plants, Ovary is inferior in

A) hibiscus

B) clitoria

C) sunflower

D) rose

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