Blood pressure forces fluid out of capillaries to form tissue fluid, which eventually drains into the lymphatic system to become lymph. Which statement correctly describes the differences in composition between these fluids?
Tissue fluid contains red blood cells and platelets that have passed through capillary walls.
Lymph contains more glucose and oxygen than blood plasma because it transports them directly to body cells.
Blood plasma has a much higher concentration of large proteins, such as albumin, than tissue fluid.
Tissue fluid does not contain hormones because they are too large to pass out of blood capillaries.
15 exam-style questions on OCR A A Level Biology Transport in animals. Each one has a worked solution and a mark scheme showing where the marks go.