colors of light on photosynthetic activity and showed that the conversion of light energy to chemical energy took place in the chloroplast. In 1881‚ he observed the movement of bacteria towards the chloroplasts in a strand of “Spirogyra” algae. Engelmann hypothesized that the bacteria were moving in response to oxygen generated by the photo synthetically active chloroplasts in the algae. This was one of the first documented observations of positive aero taxis in bacteria. In 1882‚ he performed his
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evolved morphological‚ anatomical and physiological adaptations to obtain‚ process‚ transport and store raw materials and energy under varying conditions. capture and conversion of radiant energy to chemical energy takes place in chloroplasts (chloroplasts are localized in specialized tissues) products of photosynthesis are used in respiration‚ growth‚ repair‚ maintenance‚ storage. energy consuming reactions must take place for the substances of photosynthesis to be transported around the plant
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reticulum and have vacuoles where food‚ water‚ and nutrients are stored as well as provide stability for a plant. Three Differences Along with the similarities‚ there are also differences between animal cells and plant cells. Plant cells contain chloroplast to help make their own food whereas animal cells do not and animal cells do not possess a cell wall like plant cells do. Another difference is the shape of the cells. Animal cells are circular in nature and plant cells are rectangular. Although
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eat plants and animals and convert those into energy; humans also use solar energy to create electricity. How exactly then is the sun’s energy converted into a sustainable energy source? One process is photosynthesis. In plants‚ cells called chloroplasts collect energy from the sun and use water and carbon dioxide (photosynthesis) to make sugars.1 Light energy (called photons) hit single chlorophyll pigments in the cells of the plant leaves. 2 Photoautotrophs is the term used for plants that create
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are autotrophs. 4. What organelle allows plants (and plantlike protists) to photosynthesize? The chloroplasts allow plants and plantlike protists to photosynthesize. Objective: The goal of this lab is to identify and explore common features between organisms of the same kingdom. Theoretical Background: Plantlike Protists: - commonly referred to as algae - have organelles called chloroplasts
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|Answer key: | |CELL CITY INTRODUCTION! | | | |Floating around in the cytoplasm are small structures called
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Cell Respiration & Photosynthesis BIO STUDY GUIDE (Ch. 9.1-9.5‚ 10.1-10.3) I) CELLULAR RESPIRATION A) Catabolic Pathways A.1) Fermentation: partial degradation of sugar that occurs w/o oxygen A.2) Cellular Respiration: oxygen is used A.3) Redox Reactions (Oxidation-Reduction that exchanges electrons) Oxidation: loss of electrons (energy must be added) Reduction: addition of electrons. (-) charged electrons added to atom reduce amount of (+) charge of that atom A.4) Stepwise Energy Harvest
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which carry out different functions. Plant and animals vary slightly. Plant cells consist of a nucleus‚ chloroplasts‚ cell wall‚ cell membrane a large vacuole and cytoplasm. Animal cells however do not have chloroplasts a cell wall or a large vacuole instead they have mitochondria and small vacuoles located throughout the cell. All cells require energy to work plants get this energy from chloroplasts while animals get it from the mitochondria. Both plants and humans are multi-cellular i.e. they contain
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Cell Wall- The cell wall is a rigid structure outside the cell membrane that supports and protects the cell. The cell wall is made of tough cellulose fibers and other materials made by the cell. Analogy- In a restaurant the building itself supports the restaurant. It is often made of wood or concrete. Cell Membrane- The cell membrane is a structure that forms the outer boundary of the cell and allows only certain materials to move into and out of the cell. Food‚ oxygen and water move into
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slide several times in order to see each structure. 2. Do your best to sketch the cells and structures listed below. Label each feature answer the questions in your lab report. Lab Questions Why are the chloroplasts traveling along the outer perimeter of the Elodea cell? The chloroplasts are traveling along the outer perimeter of the Elodea cell to carry nutrients through the cells and make them into useful substances for the cell to utilize. What is the typical size difference between animal
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