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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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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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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The rainforests of the world all have one thing in common: they are all based around the equator and the tropics. Without them‚ many of our household products such as wooden furniture and basic necessities like coal and even air would not exist. We are losing all of our raw materials up just as we are beginning to appreciate their true value. Rainforests once covered 14% of the earth’s land surface; now they cover a mere 6% and scientists estimate that the last remaining rainforests could be drained
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Brazilian Rainforest is home to a myriad of exotic animals‚ each equipped with their own fair share of abilities to survive in the wild. There are one thousand seven hundred species of birds‚ six hundred ninety-five amphibious species‚ six hundred fifty-one species of reptiles and five hundred seventy-eight mammalian species (Butler‚ 2014). In Brazil resides one-third of the world’s rainforests‚ which is nestled right around the Earth’s equator (Butler‚ 2014). As a result‚ the rainforests experience
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Rainforest Case Study: The Amazonian Rainforest Habitat types of the forest: Over half of the Amazon rainforest is located in Brazil but it is also located in other South American countries including Peru‚ Venezuela‚ Ecuador‚ Colombia‚ Guyana‚ Bolivia‚ Suriname and French Guiana. The rainforest is made up of several different layers. These include: The emergent layer Most of these trees are broad-leaved‚ hardwood evergreens. There is a lot of sunlight here‚ these trees receive the most‚ and
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Amazon Rainforest: Clear-Cutting the Myths. There has been talk for years about the destruction of the Amazon rain forest. However‚ the Amazon is one of the most intact and least-endangered forests on the planet. The claim that the rain forests are being destroyed "at a rate of 20 football fields a minute" is false.
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compare the diversity indices of the two sampling sites. 3. To identify the most dominant species and rarest species in each site. 4. To identify the disturbances acting on the two sampling sites. II. Methodology In order to determine and describe the plant species composition of a tropical rainforest and tropical grassland‚ to compare the diversity of the two sampling sites‚to identify the most dominant species in each site and the disturbances on the two sampling sites‚ the composition
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this tissue type are storing fat‚ repairing tissue damage and protecting us against diseases. Muscle Tissue This tissue is made up of a large number of cells. There are three different types of muscle tissue and each of these three has their own function: 1. Skeletal: This type of muscle tissue covers your Skeleton to give your body its shape. 2. Smooth: This type of muscle tissue works by contracting in order to do things such as pushing food through our bodies. 3. Cardiac: This type of
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