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BIO 207 Exam 4 Practice Questions and Correct Answers

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immune system an integrated system of organs tissues cells and cell products it differentiates self from non-self and neutralizes potentially pathogenic organisms or substances capable of responding to nearly any foreign molecular structure Innate Immunity barriers to infection nonspecific respon...

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BIO 207 Exam 4 Questions and 100% Correct Answers

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In the sympathetic nervous system, _______________ is secreted by postganglionic neurons onto target tissues. norepinephrine Preganglionic neurons are relatively shorter in the ________ nervous system. sympatheitc The ___________ nervous system has thoracolumbar emanations from the CNS. sympatheti...

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BIO 207 Exam 4 Practice Questions and Complete Solutions

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When DNA is not repaired or cannot be repaired, what is the end result? Apoptosis- programmed cell death or mutation. A mutation occurs in a dog egg that changes a A to a T. This egg is fertilized and a puppy is born. What are the effects, if any? If the mutation is recessive, there will be no chan...

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BIO 207 Exam 1 Umich Practice Questions and Correct Answers

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What is a microorganism (microbe)? -microscopic unicellular organisms -not just bacterial -exist in all 3 domains (eukaryotic, bacteria, archaea) -viruses also considered microbes eukaryotes -protists and fungi -extensive membrane-bound organelles -DNA enclosed in a membrane-bound nucleus -cells ar...

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Bio-207 Ch 4-The Cells Review Questions and Correct Answers

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Cell The small unit of life that can function independently; A three-dimensional structure, surrounded by a membrane and a prokaryotes and most plants by cell wall, in which many of the essential chemical reactions with life of an organism takes place cell theory A unifying and universally accepte...

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BIO 207 Exam 3 Study Questions and Correct Answers

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Selective Toxicity the ability of a drug, at a given dose, to harm the pathogen and not the host Spectrum of activity the range of pathogens for which an antimicrobial agent is effective Drug susceptibility factors the relative effectiveness the average attainable tissue levels the route of admini...

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Bio 207 Exam 3 Test Questions and Correct Answers

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Human microbiome All of the microbes (bacteria, fungi, protozoa, archaea) that live within the human body and their collective genome. Beneficial microbial interactions 1. Synthesis of metabolites - vitamins and nutrients 2. Carbohydrate digestion 3. Protect from pathogenic microbes by competing fo...

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Bio 207 Final Exam Review Questions and Correct Answers

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A cell that produces many proteins for secretion would have large numbers of A) rough ER and Golgi apparatus. B) lysosomes and Golgi apparatus. C) Golgi apparatus and microvilli. D) free ribosomes and Golgi apparatus. E) mitochondria and cilia. A) rough ER and Golgi apparatus. Which amino acid has ...

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BIO 207 Unit 3 Practice Questions and Answers

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Explain the methodology for measuring the photosynthetic rate in a closed aquatic environment. Connect a Plexiglas leaf chamber to a CO2 sensor so the change in concentration can be measured. The IRGA is the CO2 analyzer. Calibrate the analyzer with CO2 free air and CO2 air making sure the response ...

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Bio 207 Unit 1 Practice Questions and Correct Answers

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Free energy differs from total energy because: It is available to do work. Life relies on two key reactions: the oxidation of glucose to produce CO2 and water and the reaction of CO2 and water to produce glucose. These reactions are: Exergonic and endergonic, respectively A reaction that is exergo...

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BIO 207 TEST 2 PRACTICE QUESTIONS AND CORRECT ANSWERS

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produces a functional RNA, which usually encodes a protein structural gene regulates the expression of a structural gene. - Does not encode an RNA or protein - Includes promoters & binding sites for regulatory proteins regulatory sequence most have one circular chromosome bacteria and archaea are...

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Bio 207 Exam 4 Questions and 100% Correct Answers

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what is a population? a group of individuals of the same species living in the same area at the same time what is a community? A group of populations of different species living and interacting in an area. what is an ecosystem? A community of populations and its abiotic environment microbio...

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BIO 207 Exam 2 umich Review Questions and Answers

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Microbial genomes consist of one or more DNA chromosomes Circular or linear, chromosomes or plasmids Usually one circular DNA chromosome Genome All genetic info that defines an organism Genes Contiguous packets of info encoded on chromosomes A structural gene produces a functional RNA, which us...

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BIOL 207 Rourke Exam 2 Test Questions and Correct Answers

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dendrites branchlike parts of a neuron that are specialized to receive information axon hillock the conical region of a neuron's axon where it joins the cell body; typically the region where nerve signals is generated. myelin sheath a layer of fatty tissue segmentally encasing the fibers of many ...

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BIOL 207 Molecular Genetics and Heredity Review Questions and Detailed Answers

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Typical definition of GeneticsThe study of genes, heredity, and genetic variation What is a gene?•Basic unit of heredity •Sequence of DNA that codes for a product (RNA or protein) and it's regulatory regions •Located on chromosomes What is an allele?One of two or more versions of a gene Wh...

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Biology 207 Practice Test Questions and Correct Answers

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Griffith's Transformation Experiment - S-strain: smooth, virulent - R-strain: rough, non-virulent - heat killed S-strain: non-virulent - heat killed S-strain + R-strain: virulent - live cells could be recovered form dead mice, living R-cells "transformed" by dead S-cells Avery, MacLeod & McCarty...

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BIO 207 Rourke Exam 1 Practice Questions and Correct Answers

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Electronegativity attracts/wants a lot of electrons (ex. h20; O2's electronegativity leads to an unequal sharing of electrons between hydrogen and oxygen; aka it's a polar molecule) Hydrogen Bonds Very weak, but if you have enough of them. they can be significant (ex. a lot of water molecules can...

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BIO 207 EXAM 3 Practice Questions and Correct Answers

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The atria function in the heart to do all EXCEPT? pump blood to fill the ventricle from empty to maximum What does the atria function as in the heart? a. increase the pressure in the ventricles before ventricular contraction b. collect blood from the major veins of the body c. send blood through at...

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Biology 207 - Final Exam Questions and Complete Solutions

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spontaneous mutations mutations that arise without external influence - naturally occurring induced mutations mutations that are derived by exposure to mutagenic agents or procedures - occur at a much higher frequency than spontaneous somatic mutations mutations that occur in somatic cells - will ...

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Bio 207 Exam 1 Practice Questions and Correct Answers

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what is the distance between two points that can be resolved with the naked human eye? and what determines this? We can resolve between two points at a maximum distance of 200 um. This is determined by the magnification and wavelength of the light difference between resolution and detection Resolut...

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BIO 207 UMICH EXAM 1 QUESTIONS AND SOLUTIONS

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Microbes Microscopic single-cell organisms Can exist as a single cell or in various types of colonies or multi-cellular formations that exhibit cellular differentiation - Self-replicating bioconversion machines - drivers of many chemical conversions Why is genetic diversity important? Genetic diver...

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Bio 207 Exam 2 Comprehensive Questions and Complete Solutions

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What is the study of ecology?A study of trying to understand the functioning of microbial communities. What are the four general steps to try an understand the functioning of microbial communities?1. The habitat is the starting point 2. Then identify which organisms are there 3. Then figure out w...

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Bio 207 Exam 2 Study Questions and Complete Solutions

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What is meant by the term "resting membrane potential"? How is it maintained? Resting membrane potential is when the equilibrium potential of a Na+/K+ pump is between -65 and -85. (-90mV for K+, +60mV for Na+) It is maintained by the Na+/K+ pump but is generated by the unequal distribution of ion...

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Bio 207 Practice Exam Questions and Correct Answers

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How do microbes benefit people? Soil fertility, domestic animal production, large scale industrial processes, hydrolyze carbs in stomach, produce foods and beverages, mining of metals Four basic macromolecules Proteins, nucleic acids (DNA, RNA), lipids, polysaccharides Why do bacteria have a cell ...

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