BLOOD AND CARDIOVASCULAR SYSTEM Compiled by Oba Mike 1. White blood cells have the following characteristics except: a. They are colourless and transparent b. Some contain granules, which aid their function c. They contain haemoglobin d. They produce antibodies 2. Which is not a characteristic of neutrophils? a. Possession of bilobed nucleus b. Killing by phagocytosis c. presence of cytoplasmic granules d.Taking up acidic stain 3. Red blood cells have a lifespan of ___________ days a. 90 days b. 120 days c. 130 days d. 140 days 4. Which of the following is true about blood clotting and its factors? a. Fibrinogen is soluble b. Fibrinogen is converted to fibrin c. Thrombin converts inactive fibrinogen into active thrombin d. Thrombin is converted into prothrombin 5. Concerning lymphocytes, pick the incorrect statement. a. They are the largest white blood cells b. Some get matured in the thymus c. They are found in lymph nodes. d. They contain granules 6. The left atrium receives blo...