Biology 20 IB Design Lab Does increasing or decreasing the ph level of a 3% concentration H2O2 (l) solution affect the amount of oxygen released between 15.0ml of the solution and a 5g sample of liver? The reaction is measured by the difference in mass of a balloon that is used to capture the amount of gas released by the catalase enzyme found in liver reacting with a basified 3% H2O2 (l) and an acidified 3% H2O2 (l) . Chemical reactions occur when two or more molecules interact and the molecules
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31.1 NOTES Before the 1800s‚ people thought that illnesses were caused by spirits. Around 1850‚ however‚ that all changed with the developments that were made by three scientists. Their work provided evidence that disease is caused by germs. • In 1857‚ Louis Pasteur came up with germ theory‚ which states that diseases are caused be small‚ physical particles and not spirits. These disease-causing particles are called pathogens. Around 1865‚ Joseph Lister found that cleaning his surgical tools
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Control‚ Genome and Environment Cellular Control & Variation Cellular Control (a) state that genes code for polypeptides‚ including enzymes; (b) explain the meaning of the term genetic code; The sequence of the bases on a gene is a code with instructions for the construction of proteins. It has a number of characteristics: It is a triplet code- three bases code of an amino acid It is a degenerate code- All amino acids bar one have more than one code Some codes don’t code for amino acids
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The Role of the Endocrine System Insulin‚ a hormone buried by the pancreas‚ controls blood sugar levels in the body. It travels from the pancreas to the liver in the bloodstream. Other responses are controlled by hormones; the response is slower but longer lasting than if it had been controlled by the nervous system. Diabetes Type 1 Diabetes Type 1 Diabetes is an auto-immune disease where the body’s immune system attacks the insulin-producing cells of the pancreas. People with type 1 diabetes
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Amal Farooqui Per 2B 4/28/14 Unit 6 Objectives 1. -Regulate composition of blood: the kidneys afjut the composition and volume of blood and remove wastes from it. -Regulation of blood pH: The kidneys excrete a variable amount of H+ -Regulation of blood pressure: The kidneys help regulate blood pressure by secreting the enzyme renin‚ that causes and increase in blood pressure. -Contributions to metabolism: The kidneys help synthesize the hormone calcitriol. 2. Kidneys: the kidneys
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Chapter 1. The science of Biology Outline: 1. Properties of life 2. Science a. Scientific Reasoning/method b. Experimental controls 3. Intro to Evolution a. Charles Darwin b. Malthus c. Natural selection d. Examples of evolution 4. Evidence for evolution Terms: Biology: Scientific study of living organisms and how they evolved. Science: Knowledge derived from observation and experimentation carried out to determine
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APBIO5._____________________.FR23 2014 December 3‚ Respond to the following. 1. Distinguish genetic drift from gene flow in terms of how they occur and their implications for future genetic variation in a population. Genetic drift‚ defined as the process in which chance events cause unpredictable fluctuations in allele frequencies from one generation to the next‚ can increase or decrease variability within particularly small populations. Certain genotype/phenotype frequencies‚ for example‚ may
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Josh P. AP Biology 12-10-13 Lab Writeup The Effect of Transformation of pGLO in Bacteria Background/Objectives/Hypothesis: Genetic transformation is a process that primarily is inserting new DNA into an organism to change that organism’s trait. This process has many useful benefits when used correctly in different organisms. In this lab‚ bacteria was transformed by inserting DNA for Green Fluorescent Proteins. The DNA for these proteins were taken from bioluminescent jellyfish Aequorea
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JJ Guo 12/4/12 AP Bio Chapter 9 and 10 Review Questions 1. Binary fission is the subdivision of a cell. The relative speed is faster. Chromatin is spaghetti like before mitosis Chromosomes (X-Shape) Chromatid (each individual part of the chromosome) Centromere (middle part of the chromosome) Centriole (involved in cellular division‚ the poles that pull the chromatids) Centrosome (microtubule organization center) 4. Diploid (2n) number Half the diploid is haploid (n) number Humans have
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A and P I: Endocrine System: Diseases and Age Related Changes HCG assists the hormone progesterone in the placenta. It signals the ovaries to maintain the production of estrogen and progesterone.it is thought to be associated with pregnancy symptoms such as morning sickness. Elevated levels of HCG in a not pregnant patient can lead to a cancer diagnosis. It is given as an injection in the skin or muscle. Symptoms of this can be blood clot or OHSS
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