Welcome to your AQA A2 Biology 5 What happens to ADH when blood osmotic pressure is low? Release of ADH becomes less. ADH increases the permeability of distal convoluted tubule for water. Release of ADH becomes more. ADH increases the permeability of collecting duct for water.Which gland releases ADH? Hypothalamus Poterior pituitary Thyroid gland Pineal glandWhat is the role of ADH when blood osmotic pressure is high? It increases the permeability of distal convoluted tubule for glucose. It increases the permeability of distal convoluted tubule and collecting duct for water. It decreases the permeability of distal convoluted tubule for water. It increases the permeability of proximal convoluted tubule for water.An example of a mechanoreceptor. Tymphanic membrane Rods Pacinian corpuscle Taste budThe light independant reaction of photosynthesis uses _____________ from the light dependant reaction to form a ___________. Oxygen, simple sugar Reduced NADP, simple sugar Simple sugar, reduced NADP Carbon dioxide, simple sugarWhich of the following is incorrect regarding the establishment of a generator potential in a pacinian corpuscle? Stretch-mediated sodium channels restrict movement of ions. Pressure opens sodium channels. Slight pressure initiates a small generator potential. Great pressure opens less channels.Which of the following hormones do not take part in increasing the blood glucose level when it is low? Insulin Adrenaline hormone Growth hormone Cortisol hormoneWhich of the following does not occur when the blood glucose level increases? More glucose enter the liver, muscle and fat cells. Storage of fat within fat cells is promoted. Storage capacity of glycogen in liver and muscle cells remain the same. The rate of cellular respiration is increased.Which of the following is not a physiological factor controlled in mammals by homeostasis? Blood pH Blood glucose concentration Growth of body hair Core body temperatureWhich of the following is incorrect regarding thermoregulation? Thermoregulation involves only nervous coordination system. All mammals generate heat. Mammals have physiological methods to balance heat gain and retention in the body. Most other animals, with the exception of birds, rely on external sources of heat.How does the raising of body hairs help mammals in winter? A layer of air is trapped close to the skin providing insulation. Hair erector muscles generate heat. It stimulates group huddling. The cold air gets past all the body hair.The increase of nitrate or phosphate levels from fertilizers in a water body causes _________. Eutrophication Nitrification Proteolysis AmmonificationSelect the incorrect statement regarding the structure of a pacinian corpuscle. Each corpuscle consists many concentric layers of tissue. A free nerve ending is present within the structure. Each corpuscle is square shaped. The corpuscle gets deformed by pressure.Which of the following does not occur when the blood glucose level decreases? Conversion of proteins into aminoacids within liver cells. Conversion of fat into glucose within liver and fat cells. Secretion of insulin is increased. Conversion of glycogen into glucose within liver and muscle cells.Which type of cells secrete insulin? Osteoclast Alpha cells Beta cells Microglial cellsMovement of nitrogen from the atmosphere to soil can be achieved by _________. Animal waste production Weathering of rocks Fossil fuel burning Nitrogen fixing bacteria_________ is responsible for the excessive accumulation of nitrogen and phosphorus in rivers, streams and lakes. Runoff Emission Decay RespirationWhat is the core temperature of humans? 37°C 39°C 32°C 29°CWhich is the central control for body temperature? Skin Medulla oblangata Hippocampus HypothalamusSelect the correct statement from the following. The NPP is not available for plant growth. The NPP is not available for decomposers. The NPP is available for plant reproduction. The NPP is not available for other trophic levels in the eco system.