This is a practice test for biology 101 test 2. You should also review all lectures and practice writing questions for each lecture set. You will also want to take advantage of the test banks under the “Lessons” tab in Angel. In addition to these sample questions and the test banks‚ you are advised to study the diagrams from all chapters and be able to label main structures. 1) The function of the rough endoplasmic reticulum(RER) is: a) Digestion b) Support c) DNA isolation d)
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The process involves the re-growth of granulation tissue made from extracellular matrix and collagen. It is imperative during this phase that the wounded area receives enough nutrients and oxygen from the blood vessels. Actin microfilaments allow epidermal cells to migrate over and around the damaged site. A particularly important cell‚ the keratinocyte‚ helps restore the vascular network and close the wound. Once the exterior layer is sealed‚ plasmin is released to break
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such as the use of manipulation and the power of language. It also shows how potential ignorance and indifference to problems within a revolution could allow horrors to happen if a smooth transition to a people’s government is not achieved. Lord Actin once stated “Power corrupts and absolute power‚ corrupts absolutely.” Through this quote he refers to how people use power for their own interests. In the novella Animal Farm‚ power is presented as a corruptive force. This is shown through various
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vacuole b. contractile vacuole c. central vacuole 6. Plasma membrane D. Mitochondria E. Chloroplasts F. Peroxisomes G. Cytoskeleton (Table on page 113) 1. Microtubules a. cilia b. flagella 2. Microfilaments (actin) a. muscle contraction b. pseudopodia c. cyotplasmic streaming 3. Intermediate filaments H. Extracellular components and connections 1. Cell walls of plants a. primary cell wall b. secondary cell wall c. middle
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skeletal‚ cardiac‚ and smooth. All types can go though hypertrophy (enlargement or overgrowth of an organ or part of the body due to the increased size of the constituent cells). Muscle fibers contract due to the interaction of the contractile proteins‚ actin and myosin. Muscle contraction generates contractile force (tension). The contractile proteins of muscle are located in protein filaments called myofibrils. Muscle tissues function in body movements like locomotion and also in the movement of the body’s
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Thato’s muscle had remained unused for 6 weeks. Once the cast is removed and he steps down from the examination table‚ his muscle begins to contract. Due to this 6 week period of rest‚ the muscles initial strength of contraction may be significantly low as compared to its strength a few minutes later. The strength of contraction of his muscle increases to a plateau‚ which is termed the staircase effect. Due to his muscles low initial strength of contraction‚ Thato loses his balance and falls. 1
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Determination of the Migration Potential in Breast and Lung Cancer Cells in presence of antimigratory therapeutic agent. Marco Brudik and Paloma Aranzazu Godinez Melgoza Medical and Pharmaceutical Biotechnology Program‚ University of Applied Sciences IMC FH Krems. Abstract. The new trends on research points to study the process of tomour-cell invasion and metastasis for developing and testing of anti-migratory agents. The present study develops a quantitative determination of the cancer cell’s
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1. The final yield of the cells can be determined by use of an automated cell counter or by use of a hemocytometer (Neubauer chamber). In our laboratory‚ we determine the number of purified cells in a Neubauer-improved‚ bright line chamber with V-slash with a depth of 0.1 mm and a counting area of 0.0025 mm2 from Marienfeld (Lauda Königshofen‚ Germany‚ PN # 0650030). 2. For determination of the final cell yield‚ mix a 10 µl aliquot of the purified cells (Figure 9D) with 10 µl of trypan blue solution
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Unit 5 Biology notes Contents Section 9.1 – Sensory Reception 3 Section 9.2 – Nervous Control 4 Section 9.3 – Control of heart rate 5 Section 9.4 – Role of receptors 6 Section 10.1 – Coordination 8 Section 10.2 – Neurons 10 Section 10.3 – The nerve impulse 11 Section 10.5 – The speed of a nerve impulse 12 Section 10.6/10.7 – Structure and function of the synapse / Transmission across
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Martin Luther King Jr. once said‚ “the moral arc of the universe bends at the elbow of justice.” In the short story‚ “Gentlemen Your Verdict”‚ twenty men and their captain become trapped in their submarine after an explosion. Their captain‚ Captain Oram‚ then unjustly sacrifices fifteen of his men to save five others. He takes it upon himself to make a life or death decision for fifteen innocent men. Justice is important to regulating actions and preserving virtue in society. In some cases murder
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