If there's more than one answer for the short answer, answer in ____,_____ format. It then can enter the bloodstream and attach to red blood cells. Approximately 97% of the lead is taken up by these cells. Learn midterm practice exam biology 203 with free interactive flashcards. This preview shows pages 1-3 of the document. Biology. The direct contact of acid rain pollutants in water systems can greatly affect the pH levels which will in turn potentially harm fish life. Lead (Pb++) is generally absorbed by the body through inhalation or ingestion into the lungs or the gut. View Test Prep - Biol 107 Practice Midterm.pdf from BIOL 107 at University of Alberta.   Terms. This increased acidity from acid rain can then leach out or dissolve metals such as aluminum or cadmium inherent in the soil that could possibly be taken up by plants and trees causing them damage or death. Biology. by OC1360160. 26. In the test, several vials of the water sample with differing dilutions are infused with nutrients that will grow coliform bacteria. practice exam.docx - BIOL 308 Practice Exam 1 The catabolite activating protein a Binds to allolactose b Interacts with the beta-subunits of RNA, Interacts with the beta-subunits of RNA polymerase, Binds to the operator sequence of the lac operon, Causes a bending in the DNA near the start of transcription. Conquer your course and sign up for free today! Leaves exposed to the highly acidic chemical deposits carried by rain and snow can be damaged rendering trees toward poor health. Student: 217 292 574 BIOL 1000N Practice Questions • • • • • • • • • • Successful completion and BIOL308. The vials are then incubated for 24-48 hours. Once in the cells the lead disrupts the body’s production of hemoglobin (heme biosynthesis) which is responsible for carrying necessary oxygen to all tissues in the body. This effect on the environment is referred to as “acid rain”, whereby toxic chemicals in the air are transported through the atmosphere and then fall back to the earth through rain or snow. Three tests conducted for water quality at the Brelje and Race Labs involved checking for bacteria, for toxic heavy metals, and for total solid particulate matter: 1. Compare the environmental toxicity of substances that result from burning coal as opposed to those from burning petroleum products, such as oil and gas. University of Calgary. BIOL 1070 C01 F19 2825 - Summary Biology. Biology tests often cover such subjects as physiology, morphology and reproduction. 26. This is a simple procedure that involves the evaporation of the water in a sample and a weight measurement of the residue left in the sample container. Anemia, in turn, can lead to more susceptibility to lead poisoning. BIOL 313- Midterm Exam Guide - Comprehensive Notes for the exam ( 36 pages long!) UBC students look for old exams and midterms to practice for their upcoming tests every year. Burning coal, on the other hand, produces an extraordinary amount of sulfur dioxide and particulate matter; that is, solid, microscopic particles in smoke, ash, dust and vapors that can be breathed into lung tissue causing respiratory diseases like chronic bronchitis and permanent lung damage. We recommend adding in your midterm and exam dates to your calendar so that you don’t forget them. Mammals which then eat the contaminated fish will absorb concentrated amounts of these toxins which can have acute, chronic or teratogenic(affecting the embryo) outcomes. Iron poor blood can lead to anemia, a physical condition marked by fatigue. Some of the common substances produced by both types of fuel are sulfur dioxide, nitrogen oxide, ozone gas, carbon dioxide and hydrocarbons. Studying BIOL1080 Biology at University of Guelph? Here you'll find some interesting and knowledgeable questions about anatomy and physiology, that will improve your knowledge. Dragana Miskovic. Answers to Sample Questions for Biology 107 Midterm Exam If you have any concerns about the answers to any of She mentioned it's 80% post midterm and 20% permidterm, so I'm focusing exclusively on the post midterm stuff. Even dry acid dust can be deposed onto plant life. This preview shows pages 1-3. BIOL 308. The bacteria test procedure is undertaken to detect evidence of fecal coliform or e-coli in a water sample. This list includes class notes, study guides, past exams and solutions at The University of British Columbia. After incubation, the samples are transferred to test modules resembling mini-egg crates and are then sealed. The burning of wood or diesel fuels can also contribute to particulate matter pollution, but the amount of coal burned in the world is the greatest contributor to this type of toxic substance. Study Guide. The amount or percentage of solid particulate matter can affect the health of aquatic organisms within a water system. BIOL 308 Practice Exam 1. 2. b) Is mutation rate in mitochondrial DNA high or low? Learn vocabulary, terms, and more with flashcards, games, and other study tools. Indeed, in areas with susceptible or weak buffering soils as in Scandinavia, lakes have become sterile, or devoid of fish or plant life. Sign … This process can also result in red blood cells dying sooner than what would be normal and a lessened ability to create new red blood cells. The wavelengths correspond to specific elements on the periodic chart that are being looked for in the sample. This could have consequences for all other life in the area. Not only will plant life in the water be affected by higher levels of acidity, but the metals leached into the water can be taken up by fish, or even animals causing toxicity. Both lead and mercury can enter water systems through acid rain and can be absorbed by fish, which feed off plants and smaller fish life in their environment. BIOL 313. In general, these substances can be considered air pollution because they readily disperse through the atmosphere which can lead to health and environmental problems. In soils the “buffering capacity”, that is, the ability of chemicals in the soil to maintain a normal pH balance, is overwhelmed by the tremendous increase in acid pollutants. Kyla Flanagan. This condition is usually more serious for children than adults since their smaller bodies can absorb greater amounts of lead through the gut because of higher metabolism and thinner cell walls. But it's mostly multiple choice. Course. Unlock document. Sex lethal protein in Drosophila can be best described as: Differentiate between the following terms, a) List the roles of 5’ methyl cap in transcription and translation, b) What are the roles of CTD tail in mRNA transcription and processing. But they also produce some toxic substances that are more specific to either coal or petroleum. Studying BIOL 235 Biology at Athabasca University? 3. Seepage into the soil can also cause damage to roots by direct contact, and a change in the chemical nutrients from reactions to high levels of acidity can cause tree die-back or death. Toxicity levels depend on the metal type, biology, and type of organisms exposed to it. The leached out metals could then enter water systems like lakes, rivers and streams posing serious harm to aquatic life. The basic reason for this lack of symmetry is which of the following? Learn vocabulary, terms, and more with flashcards, games, and other study tools. Trees, lakes, fish, birds and animals can also suffer in many ways. The test of total solids in a water sample is used to determine the amount of particulates suspended in or dissolved in a water source.