COMPARATIVE ANALYSIS OF THE DIFFERENT CELLULAR STRUCTURES CELLULAR STRUCTURES COMPOSITION (Biomolecule) LOCATION (in relation to the cell) NUMBER and DISTRIBUTION PRESENCE/ABSENCE IN ORGANISMS PROCESSES INVOLVED (functions) BODY STRUCTURE/ ORGAN functionally similar to and why? CELL MEMBRANE Glycoprotein Phospholipids Cholesterol Glycolipids Peripheral protein Integral protein Structural Protein Receptor Protein Transport Protein Outer Side of the Cell - Maintains the physical
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1. There are two main types of cells‚ prokaryotic and eukaryotic. The connection between the two can be seen right from their prefixes‚ pro meaning before and eu meaning true or good. This is because prokaryotic cells are before a nucleus and eukaryotic cells possess a true nucleus. This has led to many theories that eukaryotic cells have evolved from prokaryotes. The evidence for this is most noticeable in the structure of the cells‚ which will be compared below. Prokaryotic cells have no
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though‚ the human species wouldn’t exist. Along with every other plant or animal. Photosynthesis starts off the cycle‚ with light energy being trapped within the cell and transported into the chloroplast. Water and carbon dioxide follow the similar route of the light energy and as so is collected into the chloroplast. Photosynthesis tends to take place in two stages‚ light-dependent reactions and the Calvin cycle or otherwise known as the light dependent reactions. Which take place in the thylakoid membrane
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Sample essays and suggested plans for content 1. The process of diffusion and its importance in living organisms Definition Fick’s Law Types of diffusion e.g. Facilitated diffusion‚ osmosis Gas exchange in unicells‚ fish‚ mammals and plants Digestion and absorption of products Exchange of materials between blood in capillaries and tissues e.g. placenta Transpiration‚ root pressure‚ water and ion uptake by roots Translocation and mass flow hypothesis Osmoregulation by blood and kidney‚ unicells
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chloroplast: in plants‚ contain photosynthetic pigments that turn light‚ CO2 and H2O into glucose | | |5. chromosome: packaging of DNA in nucleus. Functions in cell division
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ESSAY PRACTICE Cycles in Biology A cycle can be defined by a series of repeated steps that produce an end product which is the same as the start product. There are many cycles in biology including cycles that occur inside organisms such as the cardiac cycle‚ calvin cycle and the krebs cycle. There are also biological cycles that occur around us in the outside world such as the carbon cycle and the nitrogen cycle. I have decided to focus my essay on the biological cycles that occur inside
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website www.tutorvista.com‚ Prokaryotes differ from eukaryotes in their structure‚ packing‚ density‚ and arrangement of their genes on the chromosome. Differences in cellular structure of prokaryotes and eukaryotes include the presence of mitochondria and chloroplasts‚ the cell wall‚ and the structure of chromosomal DNA. All cells share some common characteristics that make them living things and all organisms are composed of cells which are the basic fundamental unit of life. Also all living organisms
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centrosomes. Chloroplasts: photosynthesizing organelles of all photosynthetic eukaryotes. Competitive inhibition: resembles the enzyme’s normal substrate and competes with the substrate for the active site on the enzyme. Countercurrent exchange: the transfer of a substance from a fluid or volume of air moving in one direction to another fluid or volume of air moving in the opposite direction Cytochrome system: The cytochrome system is found in the many cristae of mitochondria‚ which are tiny
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specialized lipids found in cell membranes and myelin sheaths of nerve fibers. (National Institute of Neurological Disorder and Stroke) After being released from cytosolic ribosomes‚ newly synthesized peroxisomal proteins‚ unlike mitochondrial chloroplast proteins‚ generally fold into their mature conformation in the cytosol before being imported into the organelle. Protein import into peroxisomes
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READING MATERIAL 1. Explain the three hypotheses for the recent changes in the toxicity of venom in different species of rattlesnakes found in the United States. - Interbreeding between snakes with different venom profiles. - Geographic distribution (genes shifted eastward) - Convolution - Old rattlesnakes have high concentration of toxic. 2. What is an “evolutionary arms race”? Describe how this applies to one of the hypotheses suggested to explain toxicity of venom in rattlers
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