primary organelles in eukaryotic cells that involve in the transformation of energy‚ thus in production and consumption respectively. The chloroplast is an organelle present only in plant cells and some prokaryotes. At the same time they are absent in animal cells. It’s through the chloroplast that entry of energy to a cell takes place where sunlight is used to trap and convert carbon to sugar‚ which is basically chemical energy that is utilizable by plant cells. Meanwhile‚ the mitochondrion is
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Plant Structure and Function Plant Body The unique organization of tissues in flowering plants is part of the reason why they are the dominant group of the plant kingdom. Monocots and Dicots Meristems Meristems – region of undifferentiated cells that can divide rapidly. Apical meristems – shoots and tip of roots (primary growth) Lateral meristems – thickening of the cambium (secondary growth) Plant Tissues Plant Tissues Xylem – conducts water and mineral ions; fluids can
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The purpose of this lab was to determine if a there is a change in mass when a gas is produced and determine if gas has mass. To conduct this experiment‚ the group must be careful not to let the Alka-Seltzer tablet get wet before the bottle is closed by wiping the lip of the bottle and the cap so it remains dry‚ or risk gas escaping into the air and not being captured by the bottle. Also‚ the group must be sure to close the bottle tightly with the cap‚ because gas may escape this way as well. During
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1.1 Studying the Structure of Cells In 1665‚ English scientist Robert Hooke became the first person to study cells Cell Structure Nucleolus: Makes Ribosomes‚ which help to make proteins Nuclear Membrane: Protects the contents of the nucleus Nuclear Pores: Allow materials‚ such as ribosomes‚ in and out of the nucleus |Light Microscope |Electron Microscope | |Uses light source |Beams of electrons
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Daniel Bergey Lab 2: Proteins and Starches Purpose The purpose of lab 2 and both tests with proteins and starches is to determine which substance contains either protein or starch. Hypothesis Proteins: I predict that any substance I test that derives from a living organism is will test positive proteins. Any substance that isn’t from a living organism more than likely will test negative for proteins. Starches: I predict that any substance that contains any level of glucose will test positive
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The structure and function of carbohydrates A carbohydrate is an organic molecule containing only Carbon‚ Hydrogen and Oxygen with the general formula Cn(H20)n. They are made up of individual molecules called monomers which are joined together by condensation reactions to make a longer chain called a polymer. Carbohydrates are categorised in to three main groups; monosaccharides‚ disaccharides and polysaccharides. Monosaccharides are single sugars and are sweet tasting soluble substances such
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“2-7 Algebra Lab Percentiles” 1. Find the median‚ lower quartile‚ and upper quartile of the scores. Median: 16.5 Lower quartile: 10.5 Upper quartile: 23.5 2. Which performer was at the 50th percentile? the 25th percentile? the 75th percentile? 50th percentile: Arnold 25th percentile: Ingrid 75th percentile: Brooke 3. Compare and contrast the values for the median‚ lower quartile‚ upper quartile‚ and the scores for the 25th‚ 50th‚ and 75th percentiles. If you estimate the percentiles‚ then the
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Cell Transportation Lab Eggs are a great example of a cell. Underneath the hard shell is a thin membrane that is just like the cell membranes in your cells. There are microscopic pores in the membrane that allow substances to move in and out of the cell. Way Cool! Recall that the function of the cell membrane is to control the internal balance of the cell. It helps to maintain homeostasis. In this lab you will use vinegar‚ an acid‚ to dissolve the shell off of the egg to expose the membrane
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______________________________ 2. Check the appropriate boxes to show which of the following items are minerals or not minerals. If not a mineral‚ explain why it is not. MINERAL? YES NO EXPLANATIONS Rain water Quartz Coal Silver Wood Synthetic diamonds Halite Activity 1.2 Luster 1. Examine the luster of the minerals and place the letters that corresponds to the luster exhibited. Quartz _________ Galena _________ Limonite _______ Gypsum ________ Talc ___________ Native copper _________ 2. LAB REPORT
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Case Study 3: Cell stucture and function Background Information: what are the major feature of eukaryotic cells? In this case study‚ you will apply your knowledge regarding the function of cell structures. Metabolic disorders and unique characteristics of some cells will be used to illustrate the importance of individual structures. Pick 5 out the following 7 small case studies. Each one focuses on one cell component. For each cell component‚ answer the following questions and also any questions
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