Bacteria Bacteria are microscopic organisms whose single cells have neither a membrane-enclosed nucleus nor other membrane-enclosed organelles like mitochondria and chloroplasts. Another group of microbes‚ the archaea‚ meet these criteria but are very different from the bacteria in other ways. In fact‚ there is considerable evidence that you are more closely related to the archaea than they are to the bacteria! Bacteria are living things that are neither plants nor animals‚ but belong to a group
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Simple Diffusion 1. The following refer to Activity 1: Simulating Dialysis (Simple Diffusion). Which solute(s) were able to pass through the 20 MWCO membrane? According to your results‚ which solute had the highest molecular weight? ______________________________________ Which solute displayed the highest rate of diffusion through the 200 MWCO membrane? __________________________ Using the data from Chart 1‚ explain the relationship between the rate of diffusion and the size of the solute. Facilitated
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Chemical Formulas and Chemical Compounds MIXED REVIEW SHORT ANSWER Answer the following questions in the space provided. 1. Write formulas for the following compounds: CuCO3 a. copper(II) carbonate Na2SO3 b. sodium sulfite (NH4)3PO4 c. ammonium phosphate SnS2 d. tin(IV) sulfide HNO2 e. nitrous acid 2. Write the Stock names for the following compounds: magnesium perchlorate a. Mg(ClO4)2 iron(II) nitrate b. Fe(NO3)2 iron(III) nitrite c. Fe(NO2)3 cobalt(II) oxide d. CoO nitrogen(V) oxide
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Aim: Investigate the effect of different temperatures and chemicals including various pH levels‚ alcohol and detergent on the cell membrane structure as well as function. Hypothesis: Increasing the temperature and pH levels which the beetroot membrane cells are exposed to will increase the amount of dye that passes out of the membrane. Materials: Part A • Bunsen Burner‚ Tripod and a Wire Gauze • 250mL Beaker • A 100° thermometer • Matches • 10mL measuring cylinder • Sticky labels and a Pen
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Purpose: The purpose of this lab is to test the effects of osmosis on eggs in hypertonic solutions and hypotonic solutions. Hypothesis: If the corn syrup is a hypertonic solution‚ then the egg’s size will shrink. If the water is a hypotonic solution‚ then the egg will swell. Materials: Styrofoam cups (2 per group) Styrofoam cups to weigh down egg (2) Balance Paper towels Vinegar (enough to cover egg) Distilled water Corn syrup Fresh eggs (2 per group) Procedure: Day
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Resting membrane potentials Definition: Large nerve fibers when not transmitting nerve signals is about 90 millivolt. That is‚ the potential inside the fiber is 90 millivolts more negative than the potential in the extracellular fluid on the outside of the fiber. The Na+-k+ pump also causes large concentration gradients for sodium and potassium across the resting nerve membrane. These gradients are the following: Sodium ( outside): 142 mEq/L Sodium ( inside): 14 mEq/L Potassium ( outside):
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Ligia Ramos 11th Grade HL Biology – Ms. Bartels Due Monday October 21st Limitations on Cell Size Research Question: What is the correlation between surface-to-volume ration and ion exchange and how does this relate to cells? Evaluation of Method and Results: Errors/ Limitations: | Suggestions for improvement: | Impact on Results: | Precision - Human error –cutting cubes freely‚ resulting in very different sized cubes‚ especially for the 1cm x 1cm x 1 cm cubes. All the cubes also had slightly
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Chemical Weapons Chemical weapons use the toxic properties of chemical substances rather than their explosive properties to produce physical or physiological effects on an enemy. Although instances of what might be styled as chemical weapons date to antiquity‚ much of the lore of chemical weapons as viewed today has its origins in World War I. During that conflict "gas" (actually an aerosol or vapor) was used effectively on numerous occasions by both sides to alter the outcome of battles. A significant
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 4: Simulating Filtration Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. Filtration is a process that You correctly answered: c. is passive. 2. Filtration is dependent upon a You correctly answered: b. hydrostatic pressure gradient. 3. The filtrate You correctly answered: d. All of these answers are correct. 4. An important place that filtration takes place in the body is in You correctly
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1. EXECUTIVE SUMMARY This report named ‘Demand analysis of caustic soda produced by ASM chemicals which is a tree branch of Aziz Group” is all about the production of caustic soda and its previous and current demand in the Bangladesh market. The topic was chosen because it is important to bring into limelight the importance of chemical industries in Bangladesh and the importance of caustic soda in producing innumerable essential consumer goods. I have discussed about the Organization‚ a short summary
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