Mastering Concepts 8.1 1. Explain the roles of mitotic cell division‚ meiosis‚ and fertilization in the human life cycle. Mitosis allows for growth and repair from the fertilized egg to the adult. In reproductively mature individuals‚ meiosis creates gametes with half the genetic material. The male gamete then fertilizes the female gamete during sexual reproduction‚ forming a zygote with a full set of genetic material. 2. Why are both cell division and apoptosis necessary for the development
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Science 9-Biology Observing Cell Division Lab Purpose: To use the microscope to observe and sketch plant cells and animal cells in various stages of the cell cycle. Equipment and Materials: Compound Microscope Laptops Prepared Slide of Onion (Allium) Root Tips Prepared Slide of Whitefish Mitosis BC Science 9 Text pg. 162-163 Part 1-Plant Cells Procedure: 1. Take a prepared slide of an onion tip root and observe it under low power
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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 within it. The cell wall is a rigid layer and gives structural stability to the cell and also limits the permeability of large substances into and out of the cell. Within
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SITI ALIA IZZANI ISMAIL M13D Name : SITI ALIA IZZANI BINTI ISMAIL Class : M13D Date : 6th September 2013 Title : Movement through the plasma membrane Hour : 2 hours Assessment : Design Aim : To study the effect of lipid solubility of molecules on permeability of plasma membrane of animal cell. Introduction : Diffusion: In general‚ diffusion process occur when there is a concentration gradient between two region .Molecules (other than water) will move
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The Cell: Transport Mechanisms and Cell Permeability 1. Molecular motion: A and D 2. Velocity of molecular movement: B and C 4. Size of pores. Solubility in the lipid portion of the membrane and/or presence of membrane “carriers” for the substance(s). 5. Glucose- (a) move into the sac Albumin- (c) no movement Water- (b) move out of the cell NaCl- (a) move into the celll 7. Hypertonic- C- crenated Isotonic- B Hypotonic- A- hemolysis‚ bursting open due to swelling
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Lab Report 1: Subculturing Adherent Cells Fibronectin‚ integrin alpha 3‚ and actin are all involved in cellular adhesion at both the cellular and molecular levels. Integrins are the primary trans-membrane receptors that mediate dynamic interactions between the extracellular matrix and the actin cytoskeleton whenever a cell is motile. Integrins bind to the extracellular matrix and link to the actin cytoskeleton via a shirt cytoplasmic tail; they also help determine cellular binding specificity because
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Date_________________________ Pd______ Cell Organelles Worksheet Complete the following table by writing the name of the cell part or organelle in the right hand column that matches the structure/function in the left hand column. A cell part may be used more than once. Structure/Function 1. Stores material within the cell 2. Closely stacked‚ flattened sacs (plants only) 3. The sites of protein synthesis 4. Transports materials within the cell 5. Jelly-like substance in the cell 6. Organelle that manages
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01) The Cell Structure and function Abstract In this lab the structures of various cells were viewed through a compound microscope. The bacteria in yogurt was viewed a long with a slice of potato‚ and a thin skin of red onion. The potato was dyed with iodine while the red onion was dyed with methane blue. The students had to assemble the first three slides. Two more slides were provided these are the yeast and protozoa cells. Those two are also viewed
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Cell Reproduction Dr. Susan Kennedy Introduction to Biology January 28‚ 2012 Introduction Cellular reproduction is the process by which cells duplicate their contents and then divide to yield two cells with similar‚ if not duplicate contents. Life as we know it depends on the ability of cells to store‚ retrieve and translate the genetic instructions required to make and maintain a living organism. In this assignment‚ I will discuss two different types of cell reproduction
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Lab 5 –Cell Structure and Staining using Microscopy Instructions: Please download this MSWord document to your computer and answer the questions as asked. Then save the document and upload it to Bb using the Assignment feature provided. This assignment is worth a total of 100 points – there are 20 questions worth 5 points each. NAME Buket Rembert In Lab 3 you were introduced to microscopy. In this lab you will be adding to that experience by reviewing the differences in cell structure for Prokaryotes
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