cycle of cell regeneration and division. Assuming Joseph’s heart stopped‚ what cellular functions are going to be affected by the loss of oxygen‚ blood glucose‚ and waste removal? All cells will work hard burning up ATP. Carbon dioxide starts to build in cells and PH balance will drop. Cells will die and active transport pumps shut down the plasma membrane of his heart. Cell become leaky‚ and sodium will leak into cells and potassium leaks out. Which intracellular organelles have membranes as part
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Cellular processes and membrane functions that will be affected if Joseph’s heart stopped would be as follows. Oxygen‚ glucose‚ and essential ions that are required for the heart to pump will slow down. Each of his cells will have to work harder and faster which uses up his energy supply. Carbon dioxide levels inside the cells will rise‚ which causes his PH to drop. The mitochondria will run out of oxygen and glucose to make essential ATP‚ which eventually causes the cells to die. Active transport
Free Cell Endoplasmic reticulum Golgi apparatus
The cell membrane is a semipermeable membrane made to separate the interior of the cell from the exterior and regulate the movement of substances in and out of the cell. Diffusion is how substances more in and out of the cell. There are several types of diffusion‚ but for the purposes of this lab‚ we will be focused on simple and osmosis. Simple diffusion and osmosis are vital for the diffusion of water and maintaining homeostasis. Homeostasis is the ability to maintain equilibrium and keep the organism
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Multiple Choice 1. a. b. c. d. e. 2. a. b. c. d. e. 3. a. b. c. d. Cellular Level of Organization What are the three main parts of a eukaryotic cell? Plasma membrane‚ organelles‚ cytoplasm Plasma membrane‚ organelles‚ nucleus Plasma membrane‚ cytoplasm‚ organelles Plasma membrane‚ cytoplasm‚ nucleus Plasma membrane‚ cytosol‚ organelles Plasma membranes consist of what three components? Phospholipids‚ glycoproteins‚ water Proteins‚ cholesterol‚ fatty acids Cholesterol‚ fatty acids‚ glycolipids Proteins
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Chemical Basis of Life Chemistry Atoms – smallest particle of an element Subatomic particles: * Protons * Neutrons * Electrons Molecules – a unit formed by 2 or more atoms joined together Elements Compounds Mass Weight Inorganic Compounds – molecules that do not necessarily contain a carbon Organic Compounds – always contain large amounts of carbon * theses are the molecules composing living things – organisms Biologically important Inorganic Molecules
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molecules OUTSIDE the cell than inside. Hypo tonic means there is a LOWER concentration of solute molecules OUTSIDE the cell than inside. Isotonic means there is the SAME concentration of solute molecules outside the cell as inside. The SWELLING AND BURSTING of animal cells when water enters is called cytolysis. This happens when a cell is placed in a hypotonic solution. The SHRINKING of plant cells when water leaves so the cell membrane pulls away from the cell wall is called plasmolysis
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Produced by cell clusters in the pancreas called the Islets of Langerhans‚ insulin is a hormone that regulates glucose concentration in the blood. It is a protein synthesised and stored by beta cells‚ which secrete it in surges responding to changes in glucose levels. (Hardin‚ Bertoni and Kleinsmith‚ 2012) Fig 1. The Pancreas and Insulin |Source: University of Maryland (2011) | | |
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BRIEF INTRODUCTION: Beetroot cells contain a red pigment stored in the cell vacuole in the membrane to prevent leaking out from the cell. In this experiment we used several solvents to calculate which one made the cell release more pigment. RESULTS: A table showing the results of the intensity of the color and the absorbance of the liquids with the different solvents. Solvent Results from colorimeter 0.001 Acid (Hydrochloric) 0.358 Ethanol 0.132 Hot water 0.984 Cold water-distilled
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a typical cell‚ the concentration of K+ is about 5mM and the concentration of Na+ is about 150 mM. When you increase the concentration of K+ from 5 to 25 mM and reduce concentration of Na+ from 150 to 130 mM‚ the outside has more concentration of K+. The membrane is permeable to a particular ion‚ that ion will diffuse down its concentration gradient from a region of higher concentration to a region of lower concentration. 2. Explain why increasing extracellular K+ causes the membrane potential to
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Formed by cells and molecules of the extracellular matrix o Connective tissue: characterized by the abundance of extracellular fluid o Organs can be divided by parenchyma (composed of cells for main function of organ) and stroma ( supporting tissue) o Except in brain and spinal cord stroma made of connective tissue o Epithelial tissue: covering‚ lining protecting surfaces ex: skin‚ absorption (intestines)‚ secretion (epithelial cells of glands)‚ contractility (myoepithelial cells) o Characteristic
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