Which of the following structures are present in both prokaryotic and eukaryotic cells? Both eukaryotes and prokaryotes have DNA as their genetic material‚ each also contains RNA. Both types of cells are covered by a cell membrane and are made of the same basic chemicals: proteins‚ fats‚ minerals‚ and carbohydrates. Ribosomes are responsible for the synthesis proteins and are also present in prokaryotic and eukaryotic
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osmosis. The iodine is there so we can see this happening. Materials: * Dialysis(cellulose) tubing * Thistle funnel * Gas jar * Retort clamp and stand * Rubber bands * 50mL beaker * Iodine/potassium iodine solution * 5% starch solution Method: 1) Fill the gas jar to 3 quarters full with water. Add iodine solution until the water is quite yellow/brown. 2) Moisten the cellulose tubing and tie a knot at 1 end. At the other end insert the stem of the thistle funnel
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Black Chem 4135.001 Abstract: Like the previous experiments‚ the ultimate goal of this lab was to purify the enzyme sample. However‚ this is the last lab for purification and high level techniques of purification were employed to achieve this. Dialysis was used first‚ lowering the small-molecule concentration within the sample. Finally Affinity Chromatography on a Cibacron blue Sepharose stationary phase. Using BSA‚ which is analogous for BCA assays‚ a standardization was created to understand
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Orange Park FL 32073 BSC2085C - Anatomy and Physiology I - 333738 Fall Term 2010 Larry Chad Winter lwinter@fscj.edu Submitted - 9/18/2010 NAME Mark Graham Cell Transport Mechanisms and Permeability Activity 1: Simulating Dialysis (Simple Diffusion) Chart 1 – Dialysis Results |Membrane (MCWO) | |Solute |20
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Raisha Miggins Lab 5: Osmosis Purpose The purpose of this lab was to explore the concept of Osmosis using dialysis tubing and different concentrations of sucrose solutions‚ and to help one better understand what happens to cells when they are exposed to solutions of differing tonicities. Hypothesis If the four dialysis tubes containing different concentrations of sucrose are all placed in their appropriate solutions for 20 minutes‚ then my predictions are as follows: The 1% in 1% sugar solution
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in and out of cell membrane - Diffusion can be affected by the steepness of the concentration gradient. Lab question: Is the rate of diffusion influenced by the presence of second molecule? Prediction: the rate of diffusion is influenced by the presence of second molecule. Material: - Computer - Vernier computer interface - Logger Pro - Vernier Conductivity Probe - three 18×150 mm test tubes with rack - 1％‚ 5％‚ 10％ salt water - 400mL beaker - dialysis tubing‚ 2.5cm ×12 cm -
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temperatures the enzymes will stop working. (Steadyheatlh‚ 2004) Dialysis is the artificial process of getting rid of waste (diffusion) and unwanted water from the blood. This process is naturally done by our kidneys. Some people‚ however‚ may have failed or damaged kidneys which cannot carry out the function properly‚ they may need dialysis. (Ungar‚ 2012) Patients with renal failure experience a lot of imbalances while receiving dialysis. Electrolyte imbalances are the most common‚ usually presenting
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differentiation (e.g.‚ morphogenesis). Differences in surface-to-volume ratios affect the capacity of a biological system to obtain resources and eliminate wastes. Membranes allow cells to create and maintain internal environments that differ from external environments. The structure of cell membranes results in selective permeability
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Exercise 1: Cell Transport Mechanisms and Permeability: Activity 1: Simulating Dialysis (Simple Diffusion) Lab Report Pre-lab Quiz Results You scored 100% by answering 4 out of 4 questions correctly. 1. The driving force for diffusion is You correctly answered: b. the kinetic energy of the molecules in motion. 2. In diffusion‚ molecules move You correctly answered: a. from high concentration to low concentration. 3. Which of the following dialysis membranes has the largest pore size? You correctly
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The Effect of Concentration Gradient on Osmosis Abstract: Osmosis is the passive movement of water from an area of higher concentration to an area of lower concentration‚ usually across a membrane (Thorpe 2013). Tonicity is the ability of a solution surrounding a cell to gain or lose water (Reece 2011). There are many factors that affect the rate of osmosis. These include temperature‚ surface area‚ difference in water potential‚ pressure‚ light and dark and most importantly what we will be talking
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