included) (not insisting on generic capitals) any two for 1 mark Animals‚ Protoctists‚ Prokaryotes;; (accept Latin equivalents) any two for one mark‚ all three for both that (they are) fertile; 1 (b) 2 1 (c) Total 4 __________________________________________________________________________________ klm Question 3 (a) GCE: Biology B – BYB4 June 2002 Mark across whole of two parts in (a) to credit the following possible points (structure) Distant object Close object Cornea suspensory
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BORNEO RAINFOREST The tropical rainforest is earth’s most complex biome in terms of both structure and species diversity. Tropical Rainforests can be found in South and Central America‚ Africa‚ Oceania (the islands around Australia)‚ and Asia (15).Tropical rainforests cover only about 7% of the Earth’s surface (13‚ )All Tropical Rainforests have similar characteristics including climate‚ precipitation‚ etc. They are located in a band around the equator. However‚ not every tropical rainforest can
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the glomerulus. A good deal of fluid from the blood filters into the capsule. Large proteins and whole blood cells are left behind due to the fact that their too big to pass through the filters along with the plasma or blood fluid. There are four main parts of the nephron tubule: the proximal convoluted tubule‚ the U-shaped loop of Henle‚ the distal convoluted tubule‚ and the collecting duct. A substantial amount of resorption takes place in the proximal convoluted tubule. The small proteins‚ glucose
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The cell membrane is made up of fats‚ proteins‚ lipids‚ and carbohydrates‚ and is a permeable structure. However‚ this permeation is very discerning because it only lets certain things pass through it. The cell membrane has a layer of phospholipids with hydrophobic ends and hydrophilic tops. The “tails” are made out of phosphate‚ while the “heads” are made up of two strings of fatty acids. There are two layers of these phospholipids‚ called the “bilayer”‚ and the tips of each phospholipid are facing
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Feature Structure Function Atria (singular atrium) thin walled no valves rough pectinate muscles sinus node (impulse generating tissue) interatrial septum Right atrium: Receives deoxygenated blood returning to the heart from the vena cava and pumps it to the right ventricle. Left atrium: Receives oxygenated blood returning to the heart from the pulmonary veins and pumps it to the left ventricle. Ventricles thicker walls (than atria)‚ the left is thicker than the right as blood must be pumped all
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Why is water important for living organisms? Water is very important in all living organisms‚ it is vital for many different things. Around 70% of our body weight is due to water. The quantity is high in organs such as lungs and brain and fluids such as blood‚ lymph‚ saliva and secretions by the organs of the digestive system. First of all water is vital in the regulation of body temperature to depending on the temperature mammals will alter the amount they sweat. If they are to warm the amount
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Why should tropical rain forests be conserved? Tropical rainforests are thought to posses more plants and animals than any other forests on earth. Most tropical rainforests are located around and near the equator‚ they have existed on earth for hundreds of millions of years. But they are among the most endangered ecosystems globally due to humans. They are an important part of human life and are know as the “lungs of the planet” they have many animals‚ and many natural medicines come from tropical
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The temperate forest is an area of the world that has high levels of precipitation and humidity. They contain a wide variety of deciduous trees‚ which are trees that lose their leaves in the winter. The temperatures of the temperate forests vary based on the four seasons. It is typically hot in the summer with high temperatures of 86 degrees and cold in the winter. These areas receive large amounts of precipitation in the form of rain and snow. Eastern Asia‚ Central and Western Europe‚ and the Eastern
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P5 – Describe the Structure and Function of the Cardiovascular System Changes in Stroke Volume Stroke volume is the amount of blood pumped out the left ventricle‚ every beat your heart makes. It can differ from your resting heart beat and your heart beat when exercising. Normally‚ when exercising‚ your heart rate increases meaning the stroke volume also increases. The blood pumped by the left ventricle is oxygenated‚ and will deliver oxygen to the muscle. The more blood injected in a heartbeat means
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Ecosystem Structure‚ Function‚ and Change Keyich is a city in Casdonia‚ located in Eastern Europe. Over the past six years‚ the city’s population has grown rapidly from 265‚000 in 1995 to 650‚000 in 2001‚ resulting in a 145% increase. The continious fast-paced growth estimates that by 2008 the city’s population is expeted to reach 1‚600‚000. The Keywich City Council has concerns with the excelling growth pattern and possible negative consequences associated with the growth such as cultural‚ economic
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