: The purpose of the experiment was to determine the wavelength and light intensity effect on the reaction rate of photosynthesis. Photosynthesis is the conversion of light energy to chemical energy in the form of organic compounds. There are two phases in photosynthesis‚ the light reaction and dark reaction. The following experiment tested only the light reaction. Photosynthesis takes place on the chloroplast‚ and the chloroplast contains chlorophyll pigments which absorb light energy. Pigments
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Lab #5: Refraction of Light Theory: Refraction can be defined as the bending of a wave when it enters a medium which causes it to have some reduced speed. In terms of light‚ refraction occurs when the ray passes through some medium which slows its speed; such as water or glass. In this instance the ray tends to bend towards the normal of the medium. The amount of bending or refraction which occurs can be calculated using Snell’s Law (). Objective: To measure the index of refraction of Lucite
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Investigation into the photosynthetic activity of isolated chloroplasts from spinach beet to various light conditions. Introduction Chlorophyll‚ an important pigment in chloroplasts‚ is an essential component in photosynthesis; converting electromagnetic radiation from the sun into potential chemical energy. Photons excite electrons in chlorophyll which move through the electron transport chain‚ resulting in energy being stored in the bonds of ATP and NADPH. The flow of electron through the electron
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7 Daughters 7 Sons Essay The book‚ 7 Daughters 7 Sons by Barbara Cohen‚ Bahija Lovejoy‚ is a good piece of literature. This book is about a girl named Buran‚ who has to live in a far away city to save the lives of her poor family and her sick dad. In this essay‚ I am going to explain why I think this book is a good piece of literature. First‚ I am going to choose a character and explain if it’s a round or flat character. I will explain my opinion with evidence of the book. Next‚ I will be explaining
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Reading Guide Chapter 10: Photosynthesis Fred and Theresa Holtzclaw Copyright © 2010 Pearson Education‚ Inc. - 1 - Name_______________________Period___________ Chapter 10: Photosynthesis This chapter is as challenging as the one you just finished on cellular respiration. However‚ conceptually it will be a little easier because the concepts learned in Chapter 9—namely‚ chemiosmosis and an electron transport system—will play a central role in photosynthesis. 1. As a review‚ define
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Spencer Troetschel ; 2915; Mr. Krotec; Honors Bio Period 4 Photosynthesis Lab Report I. Introduction The photosynthesis lab is designed to quantify photosynthesis‚ enabling a number of variables to be tested for their effects on photosynthetic rate. The production of oxygen‚ is used as an indirect measure of photosynthetic activity.The lab allows the examination of the effects of different wavelengths of light on photosynthetic activity. The other aspect of the lab includes Paper chromatography‚ w
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Biology Lab Report 7 “Independent Assortment & Dihybrid Cross” 10-22-2013 Biology 202 Introduction: In genetics‚ when crossing a purebred white flower with a purple flower‚ we might expect its offspring to be a blend of both colors. Instead‚ we see that its offspring is purple as well. This is led to be by one trait being dominant over another trait. Gregor Mendel came up with a theory that each member of a pair of homologous chromosomes separates independently
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Exercise 7: Respiratory System Mechanics: Activity 1: Measuring Respiratory Volumes and Calculating Capacities Lab Report Pre-lab Quiz Results You scored 100% by answering 5 out of 5 questions correctly. 1. Which of the following statements describing the mechanics of breathing is false? You correctly answered: d. Ventilation relies exclusively on contracting skeletal muscles. 2. The contraction of which of the following muscles will increase the thoracic cavity volume during inspiration?
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1.) When you forcefully exhale your entire expiratory reserve volume‚ any air remaining in your lungs is called the residual volume (RV). Why is it impossible to further exhale the RV (that is‚ where is this air volume trapped‚ and why is it trapped?) This "dead space" of air needs to stay in your lungs constantly; otherwise the lung will completely deflate. If the lung has every bit of air sucked out of it‚ it will collapse and need to be re-inflated. 2.) How do you measure a person’s
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Column and Thin Layer Chromatography: The Separation of Spinach Pigment Abstract Spinach extract was separated into fractions containing compounds of similar polarity by column chromatography. Based on solid-liquid phase partitioning‚ this separation technique exploited the different polarity of the compounds in the spinach extract. Three fractions with different colors were obtained. The extract and its fractions were analyzed using thin layer chromatography (TLC). The TLC results showed that
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