points where the curve crosses the x-axis. (3) 8. The straight line l1 has equation y = 3x - 6. The straight line l2 is perpendicular to l1 and passes through the point (6‚ 2). (a) Find an equation for l2 in the form y = mx +c‚ where m and c are constants. (3) The lines l1 and l2 intersect at the point C. (b) Use algebra to find the coordinates of C. (3) The lines l1 and l2 cross the x-axis at the points A and B respectively. (c) Calculate the exact
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structures of cells but they act as enzymes in reactions of the body1. Enzymes are biological catalysts that lower the amount of activation energy needed in carrying out biochemical reactions1. Enzymes are responsible for almost every reaction that occurs in a cell and is named according to the substrate they specifically affect. An enzyme works best under optimal conditions pertaining to temperature‚ pH level and salt concentration1. In unfavorable conditions enzymes will become denatured and ineffective
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Exercise 10: Acid-Base Balance: Activity 1: Hyperventilation Lab Report Pre-lab Quiz Results You scored 75% by answering 3 out of 4 questions correctly. 1. The fastest compensatory mechanism for maintaining pH homeostasis in the human body is Your answer : a. the renal system. Correct answer: c. the chemical buffering system. 2. An increase in hydrogen ion concentration would You correctly answered: d. decrease pH. 3. The amount of carbon dioxide in the blood is measured in You correctly
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Enzymes are catalysts that speed up chemical reaction but are not themselves consumed or changed by the reaction. The cell’s biological catalysts are proteins. Proteins are made up of one or more polypeptide chains that are folded to make an active site‚ an area in which a material to be acted on by the enzyme‚ called the substrate‚ will fit. The temperature‚pH‚ the concentration of enzyme‚ and the concentration of substrate all affect the activity of the enzyme and the rate of the reaction. The
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Restriction Enzymes Restriction enzymes (also known as restriction endonucleases) are a group of bacterial enzymes which cut double-stranded DNA (dsDNA) into smaller fragments at specific points. They are a defence mechanism used by bacteria to cleave the DNA of invading viruses‚ thereby restricting their expression. The exploitation of restriction enzymes ability to cut large pieces of DNA into smaller fragments (called restriction fragments) and the highly specific way in which they do this
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To: Patricia Lodge From: Sue Gill Contents Part 1(a) Part (b) SWOT analysis Part (c) Part 2 Part 1 (a) I have decided to use section 6 of the study session in book 1. From my research of the Lodge Bistro I have found the following problems within the company. 1) An annual meeting at HQ‚ instead of regular financial reports and audits. As Patricia has given café managers autonomy to manage their bistro‚ she computerised the financial report system and audit visits have been
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Name _________________________________________ Date _________________ Anthropology 301 Self-Paced Lab 1: Introduction to the Primates 1. Which of these items or features might be studied by a physical anthropologist? a. A ceramic pot from an early civilization. b. The ruins of an ancient Mayan temple. c. The fossilized skeleton of an early primate. d. Religious rituals in a variety of different cultures. 2. Paleoanthropology is ________. a. the biology of human growth patterns b. the study of evolutionary
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Name: Yvette Exercise 1: Cell Transport Mechanisms and Permeability: Activity 3: Simulating Osmotic Pressure Lab Report Pre-lab Quiz Results You scored 50% by answering 2 out of 4 questions correctly. 1. Which of the following is true of osmosis? Your answer : b. Movement is against the concentration gradient of water. Correct answer: c. It is a type of diffusion. 2. Which of the following occurs when a hypertonic solution is added to cells? You correctly answered: d. The cells shrink. 3. The variable
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In both “Catrin” and “The affliction of Margaret”‚ both poets talk about their child who is either changing or has left them. The main difference however is that “The affection of Maraget” is a narrative while “Catrin” is written as a first person perceptive. Both poems use the metaphors of chains or ropes to symbolise the relationship between the mother and the child. In “Catrin” the “red rope” is used to symbolise the mother and child’s connection. It could mean that rope itself represents their
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Instructor: Nahid Rahman Assignment #1 Total Marks: 100 Worth: 7.5% 1. Consider the sinusoidally modulated DSB LC signal shown below. The carrier DSB-LC frequency is ωc and the message signal frequency is ωm. (a) Determine the modulation index m. Solution: Amax = 25 Amin = 5 − 25 − 5 = = 0.67 + 25 + 5 (b) Write an expression for the modulated signal φ(t). Solution: 1 1 ) = (25 − 5) = 10 = ( − 2 2 1 1 ) = (25 + 5) = 15 = ( + 2 2 = + cos = cos + ( ) cos Assignment 1 Sol Page: 1 of 12 =
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