IGCSE O Level Biology Practice Test 58

Heart: O Level Biology MCQ (Multiple Choice Questions) PDF - 58

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Heart: O Level Biology Questions and Answers PDF Download: Quiz 58

MCQ 286: Semilunar valves are present at the bases of

A) pulmonary artery only

B) aorta only

C) pulmonary veins

D) pulmonary artery and aorta

MCQ 287: If the trees are cleared, annual rain fall

A) increases causing flood

B) decreases and the area becomes dry

C) decreases but increases moisture

D) increases but decreases moisture

MCQ 288: First use of pure microbiological process in an industrial procedure was made by Chaim Weizmann in

A) 1921

B) 1925

C) 1917

D) 1907

MCQ 289: In brain hypothalamus forms the

A) walls of medulla oblongata

B) floor of the cerebral hemispheres

C) base of the cerebellum

D) top of the medulla

MCQ 290: To hydrolyze Tristearin, the enzyme used is

A) sucrose

B) lipase

C) maltase

D) amylase

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