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