THE CELL Task 1 – The difference between electron and light microscopes Electron microscope Light Microscope Illumination Electrons Light Focused by Magnets Lenses Maximum magnification X50 000 000 X1500 Resolving power 78 picometres 200 nanometres or 0.2 µm Type of specimen A dead specimen is used The specimen can be either alive or dead Preparation needed for the specimen A lot more complex It is simple The cost of the equipment It’s very expensive Cheaper Are the images in colour? No
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Cloning is a process of creating identical copies. During the process, the nucleus of fertilized egg gets replaced by another organism's cell, and if that process is successful then the fertilized egg will produce an identical copy of the body. With the issues, in today's world Human cloning should not be allowed. Eventually, there won't be enough space for them on the planet, and it does nothing good other than creates more problems than it solves. Human cloning is not ethically and morally acceptable
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of our society? Firstly, just the general knowledge that it exists is a little perplexing, yes, it is beneficial to recreating tissue for diseases like diabetes, pancreatic cancer, and even Parkinson’s disease, and of course the often debated stem cell
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AFFECT ITS ROLE IN THE CELL CYCLE P53 plays a very important role in controlling the cell cycle. Defective p53 can cause multiplication of abnormal cells, which leads to cancer. Over 50% of human tumours contain p53 mutants. Damaged DNA and some stress signals can activate the increase of p53 proteins while normally; the p53 protein level is available in lower quantities. To reduce the damaged DNA, p53 can repair DNA; it can perform growth arrest and initiate apoptosis (cell death). Description of
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Transduction is a process monitored by viruses to transfer bacterials genes, most commonly through horizontal gene transfer.Bactiopages or phages, which is a bacteria infected by a virus, can be virulent (cause host cell lysis) or temperate (do not kill the host). Phages can either go through Specialized transduction or Generalized transduction. For Specialized transduction, a temperate phage uses the Lysogenic cycle to attach to the host bacteria and inject its DNA. At a specific integration site
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Why We Study the Cell and Its Components The cell is the basic unit of all living organisms. Some organisms like bacteria have only one cell while other organisms are multi cellular. It is important to study the cell and its components because it enables understanding of our own life and opens up windows of opportunity for the future generations. Understanding cells and their component functions allows for better understanding of disease and the possibility of cures or better treatment options
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four basic human body structure units are cells, tissues, organs and systems which, all working together make the human body function. The cells are the core structure that make up the human body, although there are many different shapes, sizes and types they consist of three main parts, the cell membrane which maintains the shape of the cell and separates and controls the movement of material into and out of the cell, the nucleus which contains the cells DNA and determines its structure and function
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onJinerose S. Catubig TFR 10:30AM - 12:00NN TITLE: “Life is sweeter the second time around” “ Call upon the name of the Lord and be save”. I first hear this song from a dear friend in a cell group session. It is a form of a group where we praise and worship God in our own little way. I believe He is always with us and we haven’t notice because we are being blinded by the busy world. But nearly I know He makes sure that at the end of the day we will learn something from life’s lesson. And no
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conceptual understanding of biology. Students are introduced to scientific ideologies and concepts that not only shape the biological world, but also shape humans. Students examine the scientific method, evolution and biodiversity, the biology of cells, physiology, the dynamics of inheritance, and the effect humans have on the environment. The text emphasizes methods and the theoretical foundations of ideas, while minimizing isolated facts. It stresses the integration of ideas, making connections
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Microorganisms are an important part of the human environment and health. C. Study of microorganisms brings insight into life processes in all forms of life. II. Viruses A. Not considered a live organism because: 1. Not a cell 2. Replicate by invading a cell, and using the cell to make more viruses 3. Do not grow 4. No homeostasis 5. Do not metabolize B. Structure – composed of: 1. Capsid or protein coat. 2. Some have an envelope (membrane) 3. Nucleic acid – either: RNA, DNA C. Size 1. About
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