What percentage of blood is composed of plasma?45%55%65%75%       Assertion: Plasma transports carbon dioxide dissolved in blood.Reason: Carbon dioxide is a waste product transported from tissues to the lungs for exhalation.Options:Both assertion and reason are correct, and the reason correctly explains the assertion.Both assertion and reason are correct, but the reason does not correctly explain the assertion.Assertion is correct, but the reason is incorrect.Assertion is incorrect.       Why does the heart have different chambers?To regulate blood pressureTo prevent oxygen-rich blood from mixing with carbon dioxide-rich bloodTo filter waste products from the bloodTo produce red blood cells       Label the parts numbered 1 and 2 in the diagram,1) Aorta 2) Vena Cava1) Vena Cava 2) Pulmonary Veins1) Pulmonary arteries, 2) Pulmonary veins1) Aorta, 2) Lung capillaries       When the muscular left ventricle contracts, what happens to the blood?It is pumped out to the bodyIt is transferred to the right atriumIt is collected in the left atriumIt is oxygenated in the lungs       One-cell thick walled, smallest blood vessels are called?ArteriesVeinsCapillariesVenules       Where does the breakdown of glucose into pyruvate take place?MitochondriaNucleusCytoplasmEndoplasmic reticulum       What type of reactions in the cell are driven by the energy released from ATP breakdown?Exothermic reactionsEndothermic reactionsSpontaneous reactionsNeutral reactions       What is the primary molecule synthesized using the energy released during cellular respiration?GlucoseOxygenATPBoth A and C       How do plants primarily exchange gases with their environment?Through their rootsThrough their flowersThrough stomataThrough their seeds