AP Bio Ward's Plant Pigments and Photosynthesis?

Current understanding is that the earliest photosynthetic organisms were aquatic bacteria, some of which are still around today. One of these, halobacterium halobium, grows in extremely salty water. It makes use of the bacteriorhodopsin pigment. The chlorophyll system developed to use the available light, as if it developed in strata below the purple bacteria and had to use what it could get.

pigments.Photosynthesis in plants.

Background Knowledge: Photosynthesis is the process by which plants make their own food.

Quest.Plant Pigments and Photosynthesis.

The process of chromatography, which separates complex mixtures into their component parts based on their solubility in different kinds of solvents, can help identify some of the pigments used in photosynthesis.

"Chromatography Lab Answers.".Plant Pigments and Photosynthesis.

For a good description of the varying types of pigments found in this part of the experiment, read the bottom of page 123 and the top of page 124 in your laboratory manuals. The experiment was prepared by streaking pigment extract to the bottom of chromatography paper and placing it in a tube with chromatography solvent in the bottom.

In this lab a red, green and brown algae will be used to extract the photosynthetic pigments from.

Biology AP Lab Plant Pigments and Photosynthesis?

Links to pigments (chlorophyll and carotenoids) and linksto light provide absorption spectra of chlorophylls and carotenoids.

Assignment Assignmentfor Laboratory Exercise 7 -- Photosynthesis1. Examine the materials on display in the room.

Plant Pigments and Photosynthesis.

For photosynthesis to occur, plants need: · Light energy from the sun · Chlorophyll to absorb light energy · Carbon dioxide from the atmosphere and from respiration in plant cells · Water which is absorbed by the roots and transported to the leaves by the xylem tubes....

can help identify some of the pigments used in photosynthesis

Background information: Photosynthesis Photosynthesis is the process of autotrophs turning carbon dioxide and water into carbohydrates and oxygen, using light energy from sunlight.

There are 4 main pigments in spinach; chlorophyll a, chlorophyll b,xanthophyll, and carotene.

Plant Pigments and Photosynthesis Lab - Prezi

This was done by separating the photosynthetic pigments (chlorophyll a, chlorophyll b, carotene and xanthophylls) from one another using paper chromatography.

Then we can find out what wavelength of light a plant uses most to carry out photosynthesises.

Lab 4 Plant Pigments - Biology Junction



Name

Colour

Rf

Carotene

Yellow

0.95

Phaeophytin

Yellow-grey

0.83

Xanthophyll

Yellow-brown

0.71

Chlorophyll a

Blue-green

0.65

Chlorophyll b

Green

0.45

Table 1

Colours and Rf values of the pigments found in a typical leaf

(Rf values for propane/ ether mixture).

Aim To see whether light effects the rate of Photosynthesis in plants or not....

Chromatography lab report biology - SlideShare

You can relate these results to Exercise A, Part 3. Remember how it was shown that wavelengths of red (610 - 700 nm) and blue (450 - 500 nm) resulted in the greatest amount of photosynthesis? The same is shown here in the graph - light is absorbed by the pigments better at those wavelengths as compared to others. Green, once again, is absorbed least. It ain't easy being green. ;-)