PPT-Photosynthesis Lab - Elodea &

Bromothymol Blue Photosynthesis Lab Background In this lab we will investigate the process of photosynthesis We will learn how the amount of light affects photosynthesis To do this we will use. *. Photosynthesis. – process of capturing light . . energy. from the sun to convert water & CO. 2. . . into oxygen and high energy carbohydrates . (food, ex: glucose, starch, & other sugars). Lab. 5: Photosynthesis. Lab. 5: Photosynthesis. Leaves float in water due to presence of air (air spaces) in the leaf. . How does one get them to sink?. Lab. 5: Photosynthesis. Put leaf discs under vacuum . Bryanna Wolfe. ECE 2320. October 2012. Start Here. Objective:. . When you get hungry you might decide to raid the cookie jar or ask your mom to make you a sandwich. You do this because humans and animals get energy from the foods they eat. Energy . and Life. Plants and some other types of organisms are able to use light energy from the sun to produce food.. Autotrophs. : organisms such as plants, which make their own food. Heterotrophs. Cheek Cell. LAB. Microscope Quick Steps. Name the 6 Quick Microscope Check--Steps with your partner.. Start on low power. Turn coarse adjustment knob to lower. Center fine adjustment knob. Check mirror. Photosynthesis. . Process. = plant cells use light energy to rearrange water and carbon dioxide molecules into sugar . molecules. Oxygen is a by-product (leftover, waste product). Energy now stored in the sugar. Bromothymol blue. Bromothymol blue (BTB) is a pH indicator. It is normally blue but turns yellow when the pH lowers. Carbon dioxide has a pH of 5.7. When carbon dioxide is present the color will change from blue to yellow. +. +. CO. 2. H. 2. O. C. 6. H. 12. O. 6. O. 2. ANY CONSUMER. ANY PRODUCER. Virtual Lab. Snails = consumers. Cell respiration. Take in oxygen and glucose. Give off carbon dioxide and water. Elodea = producers. 8-1: Energy & Life. What is energy?. The ability to do work.. What is the difference between autotrophs & heterotrophs?. . Autotrophs = make their own food. . Heterotrophs = can’t make their own food; must eat other organisms. Refer to . pg. . 83-92 . in . Holtzclaw. , . Ch. 10 in Campbell and media resources. . Refer . to . pg. . 297. -299 . in . Holtzclaw. , Lab . Inv. 5 . in . Lab Manual. Try This!. Where does the biomass of a tree primarily come from?. Photosynthesis. - a process used by plants and other autotrophs to convert the light energy captured from the sun into chemical energy that can be used to fuel the organism’s activities. . *It is the way plants make food! . The light-dependent reaction. The light-independent reaction. Required practical 7: . Use of chromatography to investigate the pigments isolated from leaves of different plants, . eg. , leaves from shade-tolerant and shade-intolerant plants or leaves of different colours.. Autotrophs. – organisms use can make their own food. Some. autotrophs capture light energy from the sun in the process of photosynthesis. Heterotrophs. – obtain energy from the foods they consume. Last week we looked at our cheek cells under the microscope. Today, we are going to be looking at a different kind of microscopic life. Open your folders to page 15. Page 15. Start with 100x magnification.