Laboratory Topics in Botany
Laboratory Topics in Botany
8th Edition
ISBN: 9781464118104
Author: Ray F. Evert, Susan E. Eichhorn, Joy Perry
Publisher: W. H. Freeman
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Chapter 7, Problem 1CP
Summary Introduction

To determine: The role of light in photosynthesis, and the properties of light that suggest it in both a wave and a particle.

Introduction: Photosynthesis is a process by which carbon dioxide and water are used to produce glucose molecules using energy from sunlight. During this process, oxygen gas is evolved. Reactions of the photosynthesis take place in the chloroplast of the plant cell that contains the green pigment chlorophyll.

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Plants convert light energy into the chemical energy during photosynthesis. Photosynthesis occurs in the thylakoid membranes of chloroplasts, which capture the light from the Sun and then convert the light energy into the chemical energy. Generally, photosynthetic organisms (for example, autotrophs) utilize the light energy for the synthesis of sugars as well as other organic compounds. Such compounds serve as fuel for the cellular respiration in plants. It produces two major components, namely the ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate hydrogen).

Light is a small part of vast continuous electromagnetic spectrum. All the radiations of the electromagnetic spectrum travel in waves. Every metal has maximum effect of wavelength to the light or to other radiation. This property shows that brighter light is stronger and more intense. The particle model of light explains that light is composed of energy particles known as photons. The energy of a photon is inversely proportional to wave length.

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Photosynthesis & Respiration | Reactions | Chemistry | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=3XIyweZg6Sw;License: Standard YouTube License, CC-BY