Select your answer:
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SCI CH2-1 › ViewA food sample is taken in a test-tube and a drop of iodine solution was added to it. A blue-black colour change was observed. It indicates presence of which component in food?
A. Fat
B. Protein
C. Carbohydrate
D. Vitamin
CP A&P: Cardiovascular › View
Blood flow through the circulatory system is affected by
A. pressure differences
B. viscosity of blood
C. length and diameter of blood vessels
D. all of these