heterotrophic protist‚ such as an amoeba or a cilipoopate. The term algae is used for microorganisms that photosynthesize. However‚ the distinction between protozoa and algae is often vague. For example‚ the alga Dinobryon has chloroplasts for photosynthesis‚ but it can also feed on organic matter and is motile. Protozoa are paraphyletic. Though they have sometimes been described as a subkingdom or phylum‚ they do not constitute a formal rank in modern classification systems. Characteristics
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does this relationship compare with what you observed for tomato plants? They both seem to be steady lines however in the corn leaf‚ it is a higher photosynthetic rate than in the tomato. Photosynthetic saturation is the maximum rate of photosynthesis. What value of light intensity produced photosynthetic saturation in corn leaves? You have to plot the O2 evolution and time at the different light levels. So a higher light level made a higher photosynthetic saturation. Lab Summary
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The Neolithic and Industrial Revolutions The two changes in the use of the earth’s resources that had the greatest effect on the world population were the Neolithic and the industrial revolutions. The Neolithic revolution (a.k.a. agricultural revolution) was a change in the way of life of our ancestors. It took place about 8000 years ago among various tribes in Asia and the Middle East. It included a transition from foraging and hunting to the domestication of animals (most probably starting
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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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