cells are two powerful, mutually supportive organelles: the mitochondrion and the chloroplast: The mitochondrion consumes oxygen to efficiently extract energy from carbon sources like glucose, producing carbon dioxide and water in the process. The chloroplast consumes water and carbon dioxide as it captures energy from light and funnels it into the chemical energy of glucose, releasing oxygen in the process. Endosymbiotic theory proposes that these organelles were once prokaryotic cells, living inside
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Biology- The scientific study of life. Life is structured on a size scale ranging from the molecular (smallest components of life) to the global (Earth) scale. Biology encompasses a large variety of life on earth. Uses of Biology in every day life: Molecular Biology – (Biology that deals with the smallest components of life such as cells, DNA, RNA) is used to solve crimes and reveal ancestry. Ecology- The scientific study of interactions among organisms and their environment is used to address
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Cell biology 1. Eukaryotic cell has a true nucleus and well defined nuclear envelop, and is generally larger as compared to prokaryotic cells. In addition to this it has got a membrane bounded organelles. It contains linear DNA molecule combined in a protein to form a chromosomes ,while that of prokaryotic is in a form of circular DNA. 2. Insulin is a hormone, which is synthesised by the pancreatic beta cell and released into the blood in response to high level of blood sugar (hyperglycaemia)
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sturdiness. Without a cell wall plants would not be able to keep their shape. The cell wall is made out of cellulose. One of the most abundant macromolecules on earth is cellulose. Cellulose is a type of sugar that is not used for energy but rather for structure. It does not dissolve in water and only cows and other herbivores can digest cellulose with cellulose polymers. Without the
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Five ways in which microbes are beneficial Microbes help in the body defense against other microorganisms. Microbes help to break down food in the human body, which is effective in maintaining a healthy weight. Another role of the roles of microbes invloves releasing various chemicals, which aid in increasing the body the metabolic activities in the body contamination (Cappuccino & Sherman, 2008). . This, in turn, helps prevent gaining too much weight. Microbes in the environment, where help to
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Endosymbiotic Theory Sarah Munn Cell Structure 4th period Endosymbiotic theory where to begin with this theory that has such an impact on a lot. Let us start with what this theory for the readers that may not know or just might need a refresher. The Endosymbiotic Theory states that mitochondria and chloroplasts (organelles that provide energy for eukaryotic cells using photosynthesis and cellular respiration respectively) were once independent prokaryotic cells themselves
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differs from RNA because DNA does which of the following? 6. Which one of the following is an example of secondary structure in a protein? 7. You find a cell of a type you have never seen before. The cell has both a nucleus and a cell wall. Therefore, you conclude that it must be a ______ cell. 8. Which organelle is responsible for photosynthesis? 9. What name is given to the rigid structure that surrounds and supports a prokaryotic cell? 10. Plant cells, unlike animal cells, are characterized by the
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MEMBRANE STRUCTURE AND FUNCTION Fluid-mosaic model for biological membrane In human beings, all cells are surrounded by a cell membrane, are called the plasma membrane. Our current understanding of the structure of biological membranes is summarized in the fluid-mosaic model. It describes both the "mosaic" arrangement of proteins embedded throughout the lipid bilayer and also the "fluid" movement of lipids and proteins alike. Structure of membranes Biological membranes are sheet-like structures
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A…..Identify the following Body Cavities …..Provide an answer for each number: [pic] B……Identify the Body Planes…..Provide answer for each number.. [pic] c……Identify…Body Parts: Dorsal View….1-12…. [pic] D….Identify the Body Parts: Frontal View…numbers 13-37… [pic] E….. Complete the Terms Referring to Direction/Relative Position
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Difference between Catabolic and Anabolic Pathways * Catabolic Pathways release energy by breaking down complex molecules into simpler compounds. (eg Glucose catabolism) * Anabolic Pathways consume energy to build complex molecules from simpler ones. (eg amino acids to proteins) Exergonic and Endergonic Reactions * An exergonic reaction proceeds with a net release of free energy and is spontaneous (energy released) * An endergonic reaction absorbs free energy from its surroundings
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