A design is set up by joining the points which are one third of the way along the sides of a square. This forms a second square as shown. This…

The statements are about respiration.1 Aerobic respiration releases more energy per unit mass of glucose than anaerobic respiration.2 Aerobic respiration in muscles causes an oxygen debt to occur.3 Aerobic respiration…

During the fetal stage an opening, the foramen ovale, exists in the septum between the two atria. This allows blood to flow from the right atrium to the left atrium.The…

The diagram shows the leg muscles of an athlete leaving the starting blocks for a race. Which muscles contract and which relax to bring about the change from position 1…

Which set of events occurs during exhalation? Answer: 24) C The process of exhalation or expiration is as follows: volume of thorax decreases (rule out options B and D)  pressure…