Unit 1 – Introduction to the Cell Robert Hooke – built the first microscope (30x magnification); viewed slices of cork called cellula (little rooms). Antoni Van Leeuwenhoek - worked with glass huge improvement in quality of lenses nearly 300x magnification became possible first to observe: * single-celled organisms “animalcules” * protists from pond water * bacteria from his mouth – “father of microbiology” * blood cells * banded pattern in muscle cells * sperm from
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Cells and Tissues 1. Which of the following is NOT a membranous organelle? a. Lysosomes b. Peroxisomes c. Mitochondria d. Ribosomes e. Endoplasmic reticulum Answer: d 2. Which organelle contains digestive enzymes? a. Rough endoplasmic reticulum b. Smooth endoplasmic reticulum c. Lysosome d. Golgi apparatus e. Mitochondria Answer: c Lysosomes are membrane bound sacs of digestive enzymes. They are nicknamed "suicide sacs". 3. Which organelle is considered the powerhouse
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cell is placed in an environment in which the concentration of water is less than in the cell (hypertonic)‚ water will flow from the cytoplasm and/or water vacuole through the membrane into the environment. (Some solute moves into the cell but this does not account for the dramatic changes that you see or weigh) The cytoplasm and/or vacuole of the cell shrinks. In an animal cell‚ the entire cell shrivels. In a plant cell‚ the cytoplasm shrinks away from the cell wall. A cell placed in a hypotonic
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restaurant to-go boxes are made to take food outside of the restaurant. Vacuole Membrane- This is the thin layer that separates the vacuole from the cytoplasm. This thin membrane allows materials to move in and out of the vacuole. Analogy- In a restaurant the door of the freezer locker allows the cooks to go in and take out food to cook. Vacuole- Within a cell‚ a vacuole serves as a temporary storage space for the cell. Vacuoles store water‚ food‚ pigments‚ waste or other materials. Analogy-
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Introduction Aim Hypothesis Material Method Results Discussion Conclusion Abstract The aim of this experiment was to see whether different temperatures will affect the cell membrane‚ thus would then releases the purple pigments out of the vacuole which causes the leakage of the purplish liquid. Background Information The outermost layer is the cell wall‚ which is present only in plant cells and is made up of a carbohydrate called cellulose and also has other protein substances embedded
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Study Guide Notes ¡V Test 1 CHAPTER 1 1. Linnaeus ¡V naming system Hooke ¡V cells in cork Van Leeuwenhoek ¡V animalcules (1st obs. of live microorganisms) Redi ¡V experiment to disprove spontaneous generation ¡V meat Needham ¡V experiment to prove spontaneous generation ¡V broth (vital force) Spallanzani ¡V heated broth did not develop microbial growth Virchow ¡V biogenesis (living can only arise from preexisting living) Pasteur ¡V air contained‚ but did not produce‚ microbes (broth‚ s-flasks);
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| |E. gingivalis |E. coli |E. nana |I. buetschlii |E histolytica | |Other names |A. gingivalis‚ A. / E. |A. coli‚ Endamoeba homini‚ |Entamoeba nana‚ E. |Iodine Cyst of Wenyon‚ |A. coli / dysenteriae‚ | | |buccalis |Loschia coli‚ Councilmania |intestinalis |Entamoeba williamsi/ |Entamoeba dysenteriae /
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P1 – Anatomy & Physiology Outline the functions of the main cell components Cell Membrane; in the human body there are millions of cells‚ for every cell in the body it is surrounded with a cell membrane also known as plasma.The cell membrane separates the interior of all cells to the outside environment. The outer layer or the cell controls the movement which goes in and out of the cell. The cell membrane holds the cell together‚ but has very tiny holes to allow products to move in
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which alcohol and concentration of alcohol had the greatest effect on biological membranes. The results showed that the most non-polar of the alcohols being tested‚ 1-proponal‚ caused the greatest damage to the biological membrane‚ the beet cell’s vacuole. INTRODUCTION The boundary between any cell and its environment is the plasma membrane‚ composed of a matrix of phospholipids molecules with many different kinds of proteins. Membranes have different properties and a variety of functions‚ in large
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Biology Final Review Chapter 1 Biology unifies much of natural science * Living systems: most complex chemical systems on Earth * Constrained by properties of chemistry and physics * Science is becoming more interdisciplinary (combining multiple fields) 7 characteristics of all living organisms 1. Composed of cells 2. Complex and ordered 3. Respond to their environment 4. Can grow‚ develop‚ and reproduce 5. Obtain and use energy 6. Maintain internal balance
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