LabBench Activity Plant Pigments and Photosynthesis
During the process of photosynthesis, carbon dioxide plus water in the presence of sunlight, enzymes and chlorophyll produce glucose and oxygen as waste product.
Photosynthesis Lab Essay | Medicine and Health Articles
Photosynthesis is the process of a metabolic pathway that:
- consumes oxygen
- releases carbon dioxide
- generates no ATP, and
- decreases photosynthetic output.
Chlorophyll a and b absorb violet, blue, and red which speeds up photosynthesis.
6CO + 6H O ® C H O + 12O (in the presence of light energy and chlorophyll) Aim- The aim of the experiment is to determine what effect light intensity has upon the rate of photosynthesis of Canadian Pondweed (Elodea)....
Lab 20: Energy and Photosynthesis pre lab and post lab
The most commonly used solvent for extraction of photosynthetic pigments has been acetone. Recently, however, it has become evident that alcoholic extractants have a greater extraction efficiency than acetone, and methanol and ethanol have come into widespread use. The use of ethanol is preferable because the acidification of methanol results in an undesirable shift in the maximum absorption of phaeophytin. DMF (dimethyl formamide) is able to extract chlorophyll from intact algal cells, making grinding unneccesary.
Plant pigments and photosynthesis lab answers chapter 8
In Photosynthesis, photons of light are absorbed by chlorophyll molecules, causing them to donate a high-energy electron that is put to work making NADPH and pumping protons to produce ATP. In this section of the lab you will examine recent evidence that proteins embedded in the thylakoid membranes within the chloroplasts of photosynthetic organisms are acting as an antenna to facilitate light capture.
Plant pigments and photosynthesis virtual lab - …
From here select "Online Labs" from the menu list on the left of the screen. Then select: "Virtual Lab 5 - How Do Proteins Help Chlorophyll Carry Out Photosynthesis?"
Biology AP Lab Plant Pigments and Photosynthesis? | …
One of the major objectives in analyzing photosynthetic pigments in limnology and oceanography is the estimation of phytoplanktonic biomass and its potential photosynthetic capacity. The most accurate measure of biomass, of course, is based on microscopic cell counts, where the average volume of each different phytoplankton species is calculated and multiplied by the total cell count for that species. Unfortunately this method is very time consuming and requires special equipment, as do other methods based on fluorescence and chromatographic separation. Determination of chlorophyll, on the other hand, is much simpler and requires much less time for routine analyses. Although chlorophyll concentrations in phytoplankton vary with taxonomic composition and nutritional status, strong correlations between chlorophyll content and biomass have been demonstrated. Spectrophotometric measurement of chlorophyll has thus become widely adopted as a quick and reliable method of estimating phytoplankton biomass.
Biology AP Lab Plant Pigments and Photosynthesis
Samples should be collected on the day of your lab, kept out of bright light, and refrigerated until just before coming to lab. Filtered samples for chlorophyll analysis may be stored up to a few weeks if they are kept in a desiccator and frozen. The following procedures should be conducted in dim light.