BIOLOGY 2020 LAB LAB 4 – Sensory Systems I. Vision 1. Know the types of photoreceptors in the retina. (Remember there are 3 different types of cones) 3 cones i. Blue- short ii. Green- Medium iii. Yellow-Red- Long 2. Why would near point accommodation change as you get older? (Think about what happens to the lens and the muscles of the eye with age) As you get older‚ the lens becomes hardened. The elasticity of the lens decreases dramatically with age‚ resulting in difficulty
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1. Read the paper “Post–Green Revolution Trends in Yield Potential of Temperate Maize in the North-Central United States” by Duvick and Cassman (In Blackboard – Seed Technology folder). 2. By looking at Figure 1 describe what has happened to grain protein‚ grain starch‚ tassel weight and leaf angle score through decades of corn breeding. -Some traits are held constant while corn breeders are continuously changing their ideas of the ideal corn hybrid. Also‚ the corn breeders are doing what satisfies
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Investigating the effect of changing substrate concentration on the activity of the enzyme catalase The aim of this experiment is to examine how the concentration of a substrate (hydrogen peroxide) affects the rate of reaction of an enzyme catalyse (found in liver cells) Research Question: how does changing the concentration of the substrate affect the rate of reaction of the enzyme catalyse? Hypothesis: As the concentration of the substrate increases‚ so does the rate of reaction until the reaction
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Parameters of Enzyme Activity Alex Rocha Texas State University Abstract If you’ve ever left a cut up apple out for long‚ you’ll notice that after a while‚ it will turn brown. The reason for this is an enzyme named catechol oxidase‚ a ubiquitous plant enzymes containing a dinuclear copper center (Klabunde‚ Eicken‚ Sacchettini‚ & Krebs‚ 1998). In this experiment‚ we used two different chelators‚ ethylene diamine tetraacetic acid and phenylthiourea to test which would stop the effects of catechol
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IB Biology Sheran Gu Meghan Lena Nov. 15th Influence of pH on Enzyme Activities How does the pH of solution influence the speed of enzyme activities? Enzymes are protein catalysts and chemical that speed up chemical reaction without being involved in the reaction. They are involved in the human digestive system to help people digest food more efficient. Food are substrates to be break down and absorb through the digestive system in the body. Substrate is a molecule that bond with the active site
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would equal to the total number of teeth present in the mammal. The dental formulas for these three species: coyote (Canis latrans)‚ deer (Odocoileus virginanus)‚ and human (Homo sapien) are all different. The coyote had the dental formula of 3-1-4-2/3-1-4-2 (x2)‚ which produced the total of 40 teeth. The deer had the dental formula of 0-0-3-3/3-1-3-3 (x2)‚ which equaled to 32 teeth. The human species had a smaller number of teeth with the dental formula being 2-1-2-2/2-1-2-2 (x2)‚ which produced a
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Enzymes are catalysts that increase the rate of chemical reactions organisms‚ allowing cells to break or build things instantly. The structure of an enzyme is essential to its function. Enzymes are proteins‚ made up of 100-1000 amino acids bonded together in chains. These chains are folded/coiled into a unique 3-D structure that allows them to bind to a reactant‚ called a substrate at an active site. Enzymes are flexible‚ and therefore can change it’s shape to better accommodate its substrate; this
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to perform authorized transactions. If you are on a bad site such as a bad movie upload page or a smut website the hacker can use that to pass false authorization. 3. What is the proper way to prevent XSS attack? The first rule is to deny all 4. If an attacker wishes to place a phishing page on a website‚ what is a common vulnerability that can be exploited to successfully do this? Criminals often use social engineering along with vulnerabilities in applications such as web browsers or email
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THE EFFECT OF TEMPERATURE ON CATALASE RESEARCH QUESTION: What is the effect of various temperatures‚ 0°C‚ room temperature‚ 37°C‚ 50°C‚ 60°C‚ on the number of oxygen gas bubbles liberated‚ in a decomposition reaction between the enzyme Catalase‚ obtained from crushed mung beans‚ and 2% of the substrate Hydrogen Peroxide? INTRODUCTION: Enzymes are biological catalysts that increase the rate of chemical reactions without they themselves being involved in the reaction itself. Enzymes are proteins
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Biology 102 Lab Report: Ventilation and Oxygen Consumption in Fish Methods: The lab consists of two experiments repeated over a period one hour with fifteen minutes interval‚ in order to determine the effect of weight and temperature on ventilation and oxygen consumption of Carassius auratus‚ commonly known as goldfish. Each experiment was carried out by five groups. Measurement of ventilation was determined by recording operculum movement of the fish. Oxygen consumption was measured using oxygen
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