three main parts of a cell. plasma membrane-forms a cell’s flexible outer surface‚ separating the cell’s internal environment (inside the cell) from its external environment (outside the cell) cytoplasm- consists of all the cellular contents between the plasma membrane and the nucleus. nucleus- is the largest organelle of a cell. The nucleus acts as the control center for a cell because it contains the genes‚ which control cellular structure and most cellular activities The cell is the basic‚ living
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What really happened at the Alamo? The Alamo in San Antonio‚ Texas‚ was originally known as Mission San Antonio de Valero. It was one of five Spanish missions established by Franciscans in he late 1700s and was the first set along the San Antonio River. People in the unit started calling the post "The Alamo" after the name of their home‚ Alamo de Parras‚ Coahuila in 1744. "Alamo" is also a Spanish word for cottonwood. The Alamo in Texas became a place where a battle took place. This is known
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raped‚ and on top of that having to come back to school with everyone hating you and treating you like an outcast. Overall I think that the plot progresses at a decent pace throughout the book‚ and you can really see throughout the book that Melinda starts to come out of her shell a little bit‚ and really bonds with Mr. Freeman‚ the art Teacher. I like the way the book is laid out‚ by marking period‚ because it really helps you really
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You have not completed the Pre-lab Quiz. 09/20/11 page 1 Experiment Results Predict Question: Predict Question 1: The molecular weight of urea is 60.07. Do you think urea will diffuse through the 20 MWCO membrane? Your answer : c. No‚ not at all. Predict Question 2: Recall that glucose is a monosaccharide‚ albumin is a protein with 607 amino acids‚ and
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Chapter-8 Cell: The Unit Of Life What is a cell? Cell is the basic or fundamental structural and functional unit of an organism. What is cell biology? The branch of biology that deals with the study of cell structure and function is called cell biology. DISCOVERIES; Who discovered cell? Robert Hooke observed a live cell in 1665. He observed the cell(actually the cell walls) in the slice of cork under his compound microscope ‚coined the term cell‚ recorded his observations in micrographic
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What would life be if civil rights movement had never happened? African Americans would still be discriminated against and segregation might have expanded to other areas. Without the civil rights movement from the 1950s and 1960s‚ education would not be the same‚ segregation would still exist in neighborhoods and cities‚ employment would be difficult for African Americans. In terms of education‚ school would probably still be segregated under the “separate but equal” law‚ which clearly when it was
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Total Marks: 50 Name Instructions: a) Turn-off all mobile communication devices (cell-phones‚ PDAs‚ laptops‚ etc.) b) There are 25 (twenty five) problems. You have to attempt all of them. c) Each problem has 5 (five) possible answers. Choose the correct answer‚ and fill the appropriate oval on the answer sheet. d) There is no negative marking. e) Do not fill more than one oval for any problem. f) It is preferable that you use a pencil to answer the problems. g) Non-programmable calculators can be used
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of the Cell Overview: The Importance of Cells • All organisms are made of cells. o Many organisms are single-celled. o Even in multicellular organisms‚ the cell is the basic unit of structure and function. • The cell is the simplest collection of matter that can live. • All cells are related by their descent from earlier cells. Concept 2 Eukaryotic cells have internal membranes that compartmentalize their functions Prokaryotic and eukaryotic cells differ
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education means to reject our own minds. To ask what is wrong with the idea of education‚ then‚ is to ask what is wrong with modern economic society. It is really difficult to imagine the world without education. First of all‚ without education‚ technology would not exist. There would not be any facilities that make life easier. For example‚ it would be impossible for somebody to communicate directly with his/ her relative who lives in a different country. He would not be able to use the telephone as the
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Prokaryotic cells are single celled organisms that were formed at the formation of the earth‚ so are the most basic life forms. The prokaryotes are organised in the ‘three domain system’ and include bacteria and blue-green algae. Prokaryotes live in many environments including extreme habitats such as hydrothermal vents‚ hot springs‚ swamps‚ wetlands‚ and the guts of animals. This is a diagram of a prokaryote cell and it shows that they are not very complex cells. They do not contain any membrane
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