Introduction: During this laboratory exercise will identify by the graph given which is isotonic‚ hypotonic‚ or hypertonic. The kidneys are a pair of fist-sized organs located outside the peritoneal cavity on each side of the spine. The kidney is a highly specialized organ that maintains the internal environment of the body by selectively excreting or retaining various substances according to specific body needs. The process of urine formation and adjustment of blood composition involves three
Premium Renal physiology Kidney Hypothalamus
Write your name here Yasitha Surname Other names De Silva Centre Number Candidate Number 0014 Edexcel GCE Biology Advanced Subsidiary Unit 1: Lifestyle‚ Transport‚ Genes and Health Monday 1 June 2009 – Afternoon Time: 1 hour 15 minutes You do not need any other materials. Paper Reference 6BI01/01 Total Marks Instructions black ink or • Usein the boxesball-point pen. page with your name‚ at the top of this • Fill number and candidate
Premium Human Research 2008 singles
cell and because of that the water potential outside the cell would be lower than inside the cell. This would cause water (turgor pressure) to be lost by Osmosis. Osmosis is the net movement of water from high pressure to low pressure across a partially permiable membrane and it is that reason that it requires no energy for the movement. Osmosis eventually stops/slows down when water pressure has become balanced out between the “movements”. Planning & Implementing In this study I will use different
Premium Cell wall Cell Osmosis
POTENTIAL II OVERVIEW In this laboratory you will investigate the effect of solute concentration on water potential as it relates to living plant tissues. OBJECTIVES Before you begin this lab you should understand: - the mechanisms of diffusion and osmosis and their importance to cells - the concept of water potential - the relationship between solute concentration‚ pressure potential and the water potential of a solution - the concept of molarity and its relationship to osmotic concentration **also
Premium Cell wall Cell Osmosis
(NaCl) concentrations of 0.1M‚ 0.2M‚ 0.3M‚ 0.4M‚ 0.5M‚ 0.6M. Hypothesis: When the water concentration of a solution outside the cell is lower than the concentration inside the cell‚ water will move from the inside to the outside of the cell due to osmosis. As we increase the concentration of the NaCl solutions we have used (0.1M to 0.6M)‚ more moles of NaCl are dissolved in the solution. Thus‚ the solutions increases in solute concentration but decreases in water concentration. We can therefore assume;
Premium Osmosis Concentration Cell wall
Transpiration Abstract This lab demonstrates how different environments effect the rate of transpiration in plants. A potometer is set up and placed in four different environments: one simply at room temperature (the control)‚ one with a fan pointing toward it creating a gentle breeze‚ on with a floodlight on it and a beaker felled with water as a heat sink‚ and one where the leaves are misted then covered with a transparent plastic bag. It is imperative that the tubing doesn ’t have any bubbles
Premium Xylem Water Leaf
Initial mass (kg) Final mass (kg) Change in mass (%) 0.10 0.95 1.25 31.57 0.20 0.94 1.13 20.21 0.30 1.03 1.15 11.65 0.40 0.95 1.05 10.52 0.50 0.88 0.86 -2.27 0.60 0.93 0.84 -9.67 Control 0.99 1.40 42.41 Discussion. Osmosis is the passive diffusion of water molecules across a selectively permeable membrane from a down a concentration gradient. The water potential of a system is the tendency for water to exit the system. In this experiment the aim was to measure the
Premium Osmosis Concentration Solution
independent and dependent variables in a formalized hypothesis. 4. Differentiate between an observation and an inference. 5. Contrast quantitative and qualitative observations. 6. Given a data table‚ draw and label a graph. Including a title‚ labeled units‚ and legend. 7. Given a graph‚ describe the relationship between the dependent and independent variables. 8. Identify the basic metric units of length‚ mass‚ volume and temperature‚ and list the common prefixes of the metric system. 9. Describe
Premium Photosynthesis Cell Adenosine triphosphate
themselves‚ because of these root hairs this gives the plant a bigger surface area in which it can absorb more water. Water is essential for the process of photosynthesis and also to stop the plant from wilting‚ because plant cells take up water via osmosis which makes them tight or turgid and so the plant stays upright‚ but if there is no water in the cell then the cell becomes flaccid and loose causing the plant to wilt and die. this is the same with the stomata pores except when they are turgid the
Free Photosynthesis Carbon dioxide Light
with 5 trials‚ leading to 30 cups for each produce variable. Dependent variable: The water potential of the produce‚ found by placing the produce in different molarities of sucrose and finding the isotonic state of the produce with a plotted line graph. Controlled variables: The controlled variables include: The type of produce used: Each variable produce is of the same type. Only Russet potatoes‚ Pascal celery‚ Gala apple‚ Naval orange‚ and an Imperator carrot were used. The produce to solution
Premium Standard deviation Mass Water