at its resting potential, the sodium potassium pump is turned off. When a stimulus is applied to a neurone, the resting potential is (-70mV) is reversed this is the action potential (depolarisation). This produces lactic acid. A cycle can be defined by a series of repeated steps that produce an end product which is the same as the start product. The number and type of organisms change along with the habitat.
It builds up in the body and the blood. I have decided to focus my essay on the biological cycles that occur inside organisms. 45 minutes of exam time for the essay Using knowledge and understanding from AS and A2 Show a understanding of the broad principles of experimental investigation.
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These mechanisms increase the fitness of individuals and long-term survival of populations. How organelles maintain homeostasis within cells. Cardiac output stroke volume x heart rate Effects of exercise: Ventilation breathing Respire release of energy from food/chemicals Anaerobic respiration is release of glucose without using oxygen. Synoptic Assessment PowerPoint Presentation 1 / 29, synoptic Assessment. I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described. New kinds of organisms are able eyewitness reliability essay to move. Measure the elevation along the transect line in centimetres using an inclinometer in each quadrat. The natural existence of cycles is highly important without cycles resources would run out and organisms would die. How Science Works is an integral part of the specification and, while not being specifically tested in the essay, will certainly gain credit if relevant.
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