LAB 2: DATE: 29TH September‚ 2011. FORM CLASS: L6 3 SUBJECT: Biology TITLE: Quantitative Glucose Test AIM: To determine the amount of glucose in three unknown samples namely A‚ B and C INTRODUCTION: Biological molecules are held together by covalent bonds‚ hydrogen bonds among others bonds in various ways to produce large molecules called macromolecules. Simple organic compounds and macromolecules molecules vary in structure and can be distinguished by their functional groups. Molecules of a certain
Premium Blood sugar Sugar Carbohydrate
Investigation into finding out the Effect of the effect of osmosis In potato cells Introduction I am doing an experiment to find out the effect that osmosis has on Water solution and a Sugar solution. Osmosis is a process which water moves from an area of low concentration to an area of high concentration. I am going to record my results to see if osmosis occurs in water solution of sugar solution. Apparatus In this experiment I would need; - 1) 3 test tube 2) A beaker
Free Concentration Solution Chemistry
ABSTRACT: This experiment was to observe diffusion happening within the cells‚ and to help understand the sizes of molecules and how the chemical reactions take place. Therefore‚ the experiment was conducted using glucose and starch solution inside the dialysis tube. The starch and glucose that was put inside the dialysis tube help identify which of the two will reacted with potassium iodide inside the breaker‚ as the latter passed from the beaker into the tube‚ the glucose/starch solution’s change
Premium Chemistry Glucose Enzyme
Name: ______________________________________ Date: ________________________ Student Exploration: Osmosis Vocabulary: cell membrane‚ concentration‚ diffusion‚ dynamic equilibrium‚ osmosis‚ semipermeable membrane‚ solute‚ solvent Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. Suppose you were trapped on a desert island with no sources of fresh water. Should you drink water from the ocean? Explain why or why not. _________________________________________________________________________
Premium Osmosis Concentration
in water. Then they tied one side off to form a bag. They then rubbed the other end of the bag to open it up and then are able to fill the bag with solution. The next step of the lab was to test for the presence of glucose in a 15% glucose and 1% starch. Then they took the 15% glucose and 1% starch and took 15 mL and placed them in enclosed bags. Jaydon‚ Jacob and Tyler then tie off the bag leaving room for expandable contents in the solution. Then they took distilled water and filled it with 250
Premium Chemistry Dialysis Water
Investigate osmosis between potato tissue and sugar solutions. Aim: To investigate the effect of varying concentration of a certain sugar solution on the amount of osmotic activity between the solution and a potato core of a given size 10mm Hypothesis: Osmosis is defined as the net movement of water or any other solutions molecules from a region in which they are highly concentrated to a region in which they are less concentrated. This movement must take place across a partially permeable
Premium Concentration Osmosis Semipermeable membrane
two main types of passive transport; diffusion and filtration (Marieb 68). In this experiment the focus is the importance of diffusion‚ the random movement of molecules from an area of higher concentration to areas of lower concentration. Osmosis is a special kind of diffusion where water moves through a selectively permeable membrane (a membrane that only allows certain molecules to diffuse). Diffusion or osmosis occurs until dynamic equilibrium is reached‚ or has been reached. When equilibrium
Premium Osmosis Diffusion Chemistry
The Osmosis Lab SHS Lacrosse Monster #2 Dates performed: 10/10/11 and 10/11/11 Introduction: The purpose of the laboratory investigation was to observe the diffusion of water across a semi-permeable membrane. In this lab‚ dialysis tubing was used to represent the semi-permeable cell membrane. Three dialysis tubes were prepared with 5% sucrose solution and were soaked in solutions of different concentrations. The diffusion of water across a semi-permeable membrane is called osmosis. When
Premium Concentration Semipermeable membrane Osmosis
How is Osmosis Affected By the Concentration PLANNING Independent Variable The independent variable in this experiment is the thing that I will be changing in the experiment. This is the range of concentrations that have been obtained by diluting the original 1M solution of Sucrose. This is therefore the only thing that is going to be altered as I am investigating how different percentage of water molecules affects the weight of the the potato thus the rate and direction of osmosis. Dependant
Premium Concentration Chemistry Water
Osmosis Coursework How does the amount of sugar in a water solution affect the process of Osmosis in potatoes? Introduction In this experiment‚ I will be looking to investigate the effect of varying concentration of a sugar solution on the amount of osmotic activity between the solution and a potato chip of a given size. The potato chips were cut to size‚ then added to a water based sugar solution‚ where the variable was the amount of sugar added. The potato chips were cut to size by a potato
Premium Potato Potato chip