IGCSE O Level Biology MCQs – Mock Test 344

Circulatory system MCQ with Answers PDF Download – Test 344

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Circulatory system MCQ – Mock Test 344 PDF Download

MCQ 1716: Presence of veins was demonstrated by:

Jan-Baptista van Helmont
William Harvey
Robert Hooke
John Dalton

MCQ 1717: Essential glucose (C₆H₁₂O₆) and amino acids (R-CH(NH₂)-COOH) are reabsorbed through:

osmosis
concentration gradient
active transport
blood pressure

MCQ 1718: In fungi, the starch (C₆H₁₀O₅)_n is converted to maltose (C₁₂H₂₂O₁₁) through:

protease
deamination process
maltase
amylase

MCQ 1719: Examples of depressant drugs include:

marijuana
cocaine
barbiturates
morphine

MCQ 1720: Use of fossil fuels causes:

pollution
conservation of resources
global warming
infections

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