Chapter 5 Assignment 1. What is energy? What are the three forms of energy? Energy is the capacity to do work. There are four types of energy according to the powerpoint. They are Kinetic energy (energy of motion)‚ potential energy (stored energy)‚ thermal energy (heat)‚ and chemical energy (potential energy of molecules). 2. State the First and Second Laws of Thermodynamics. Include entropy in your explanation. The first law states that energy can neither be created nor destroyed it can
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are the food makers of the cell. The organelles are only found in plant cells and in algae. Animal cells do not have chloroplasts. Chloroplasts work to convert light energy of the Sun into sugars that can be used by cells. The process is called photosynthesis and it all depends on the green chlorophyll in each chloroplast. Chloroplasts are round about 4 to 6 micrometres in diameter. Russian botanist Konstantin Mereschkowsky was the first person to discover the chloroplast. He discovered the chloroplast
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Cyanobacteria’s big advantage over other early life forms was their ability to perform photosynthesis. They contain a blue photo reactive pigment that can absorb the energy from the sunlight and use it to produce nutrients for the cell. During this process‚ water molecules are broken down into oxygen and hydrogen atoms which are then released in the air. In the very early days of life‚ Earth was populated only by anaerobic bacteria that didn’t need oxygen to survive. When cyanobacteria first made
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"sink" that can locks up as much carbon dioxide produced by human being and animals.When we release the carbon dioxide and water vapour from our lungs‚the trees will absorb carbon dioxides as many as possible to carry on it’s photosynthesis everyday.The process of photosynthesis can convert carbon dioxide into organic compound using the sunlight‚water and carbon dioxide to release oxygen as waste product.According to analysis of saintists‚ the photosynthetic organisms of tree can convert around 100
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nutrients. The nitrogen in the compost which will be absorbed helps plants grow quickly whilst also allowing the leaves to stay green. Nitrogen also aids in photosynthesis as it helps with the green pigment‚ chlorophyll. Phosphorus encourages the growth of roots‚ and helps with the growth of the plant. Potassium also assists in photosynthesis‚ the fruit quality‚ the building of protein‚ and the reduction of disease. Therefore since all those nutrients are present in the compost‚ the tomatoes which
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Internal Assessment Coversheet and Self-Assessment Session: Student Name: SL/HL Candidate Number: Investigation title: Investigating a factor that affects stomata density in leaves Syllabus topic(s): Teacher’s Instructions and help given: Candidate declaration: “I confirm that this work is my own work and is the final version. I have acknowledged each use of the words or ideas of another person‚ whether written‚ oral or visual.” Signed: Escalante Date: 15/09/14
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The carbon cycle shows how carbon is recycled -Carbon dioxide is taken in by plants in order to carry out photosynthesis and make food. -The carbon from the carbon dioxide is used to make carbohydrates‚ fats and proteins that make up the plant body. For example the cell wall of plants is made from cellulose - a carbohydrate. -Some of this carbon is returned into the atmosphere as carbon dioxide when the plant respires. When these plants are eaten by other animals this carbon becomes part
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respiration. Lactic acid: poisonous causes cramp causes oxygen debt EPOC = excess post oxygen consumption means if someone exercises hard you will see their breathing and heart rate will take time to return to a normal resting rate. Photosynthesis ….. is the process where plants use to make glucose. In this process light energy used to combine with carbon dioxide and water . Word equation= carbon dioxide + water =
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air the more our ozone layer is affected. C02 is a natural gas and is always being emitted and absorbed to and from the air. There is a certain amount of carbon on the earth. But it’s constantly in a series of exchanges. When a tree goes into photosynthesis‚ it absorbs CO2 from the air. When a tree dies‚ carbon is transferred from the forest to the soil and eventually into the air as CO2. When a factory uses energy to make products‚ it emits carbon into the atmosphere. There are many such exchanges
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Unit Test #2 Review Redox Reactions oxidation: involves loss of electrons‚ often occur with loss of hydrogen‚ occur with gain of oxygen reduction: involves gain of electrons‚ often occur with loss of oxygen‚ occur with gain of hydrogen redox reactions: coupled reactions that play a key role in flow of energy‚ involve gain/loss of electrons Energy Terms anabolic: using energy to build large molecules catabolic: breaking down compounds into smaller molecules to release energy metabolism: all the
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