Sweating has a cooling effect on human skin. Which statement best describes how this cooling effect occurs?
Evaporation of sweat from the skin removes heat energy.
Secretion of sweat from sweat glands directly cools the blood beneath the skin.
Sweat dripping off the skin transfers most of the heat energy to the environment.
Condensation of water vapor from the air onto the skin cools the body.
22 exam-style questions on OCR GCSE Biology 3.3 Maintaining internal environments, covering 3.3.1 Importance of a constant internal environment, 3.3.2 The skin and body temperature, 3.3.3 Insulin and blood sugar, 3.3.4 Glucagon and blood sugar, 3.3.5 Type 1 and type 2 diabetes, 3.3.6 Osmotic changes in body fluids, 3.3.7 Kidneys and water balance, 3.3.8 Structure of the kidney and tubule, 3.3.9 ADH and kidney tubule permeability, and 3.3.10 Responses to temperature and osmotic challenges. Each one has a worked solution and a mark scheme showing where the marks go.