Schuenzel February 13‚ 2014 Bacterial and Eukaryotic Cell Structures All organisms are composed of cells which are characteristically microscope in size. Cell size is limited by the efficiency of diffusion across the plasma membrane. A typical eukaryotic cell is 10 to 100 micrometers in diameter opposed to prokaryotic cells are 1 to 10 micrometers in diameter. Bacterial and Eukaryotic cells display different cell organization in their size and structure‚ but despite this all they display basic structural
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Diffusion in Cells Isabel Zak Question: How does the size of a cell affect the distribution of chemicals throughout the cell? Hypothesis: The larger the cell is‚ the more difficult it will be for the chemicals to reach the centre of the cell‚ and diffuse throughout it. This is because there will be a higher surface-area to volume ratio in the larger cells‚ making the centre of the cells further away from the surface. Therefore‚ when dipped in sodium hydroxide‚ the larger cells will not be
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Biology – Assignment One Cells. Question One Explain the roles of the main components and features of a cell to the cell function. A typical animal cell is rounded in shape‚ surrounded by a cell membrane. This holds in the cytoplasm‚ which contains other structures such as the nucleus‚ ribosomes‚ and mitochondria. Each cell has tiny structures inside called organelles; each type of organelle performs a particular function. For example there are mitochondria (power stations)‚ ribosomes (protein
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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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In my BIO 102 lab I have learned about the Microscope and Lab Safety‚ Sensory Organs (Eyes and Ears)‚ The Human Blood and Circulation‚ and Respiration. Once I first started this class this semester taught us about the Microscope and Lab Safety. According to google online dictionary a Microscope is an optical instrument used for viewing very small objects‚ such as mineral samples or animal or plant cells typically magnified several hundred times. We used this instrument to look at different types
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dynamics (processes) of that ecosystem including change over time o How humans may have affected biogeochemical cycles in that ecosystem‚ including impacts to the nitrogen‚ phosphorus‚ or carbon cycle o How knowledge about that ecosystem’s structure and function can help or has helped to develop plans for its management and restoration o The implication of species interactions in ecosystem management and restoration • Include two outside references. • Format your paper consistent with APA guidelines
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artery carries blood from the aorta to the kidney. The nephron has a cup-shaped nephric capsule that surrounds a cluster of capillaries called the glomerulus. A good deal of fluid from the blood filters into the capsule. Large proteins and whole blood cells are left behind due to the fact that their too big to pass through the filters along with the plasma or blood fluid. There are four main parts of the nephron tubule: the proximal convoluted tubule‚ the U-shaped loop of Henle‚ the distal convoluted
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Cells come from pre-existing cells via division Cells of all organisms fundamentally similar in structure‚ function‚ and metabolic functions Contain hereditary information passed down during cell division A cell’s volume increases faster than it’s surface area Less surface area = less are for nutrient/waste diffusion Solves via: Dividing‚ getting thinner‚ form microvilli‚ store nutrients (Microvilli – within small intestine) Cells are highly organized‚ 3 basic parts Plasma membrane Selective
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Language Function in a Bio-Repository with personal reflrction Melissa Ehinger Critical Thinking February 13‚ 2012 Abstract A good critical thinker needs to understand language. It is important to know how others use words to convey information. It is also vital to know how to utilize language to support your own ideas and defend them when needed. Looking into the operations of a research lab will demonstrate the importance of language in the workplace and the informative role it plays through
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Plant Pigments and Photosynthesis Problem: We are going to separate and identify pigments and other molecules from cell extracts through a process called chromatography. We will also test the theory that light and chloroplasts are required for light reactions to occur. Background: Pigments are chemical compounds which reflect only certain wavelengths of visible light. This is what makes them seem colorful. Many things contain pigments including flowers‚ corals‚ and even skin. More important than
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