Public Health Biology

Public Health Biology
Question Detail:Public Health BiologyQuestion 1Which of the following is true regarding endocrine glands?AnswerAs the body matures, endocrine glands develop from specialized exocrine glands.Endocrine glands empty their products into a duct.Examples of endocrine glands include sweat glands and salivary glands.Endocrine glands are connective tissues that are specialized to produce and secrete a product.Endocrine glands produce and secrete hormones.Question 2One of the most common ways to get information out to a wide audience in the least amount of time regarding “hot” topics in science is by usingAnswerpeer reviewed journalsscience magazinesthe Discovery channel on televisiongeneral interest news magazines or newspapersbooksQuestion 3Which of the following is not true regarding nucleotides?AnswerAn RNA nucleotide could be made up of ribose, a phosphate, and cytosine.DNA nucleotides contain deoxyribose; RNA nucleotides contain sucrose.There are four different DNA nucleotides.RNA nucleotides are assembled into RNA by the process of dehydration synthesis.Nucleotides are bonded together by covalent bonds between the sugars and the phosphates.Question 4Which enzyme is a potentially useful indicator of certain types of cancers?AnswerantioxidantstrypsinamylasetelomeraseDNAse IQuestion 5Which of the following is a true statement?AnswerMolecules are considered to be the smallest unit capable of exhibiting all the characteristics of life.Cells arise spontaneously from nonliving chemical elements.All living things are made up of at least one cell.Cells are incapable of maintaining homeostasis because they are too small.Organisms composed of many cells are unicellular.Question 6Which of the following is not true regarding the regulation of blood flow?AnswerBlood flow to localized areas is adjusted to meet the requirements of that particular tissue.In order to maintain homeostasis, arterial blood pressure is allowed to fluctuate so that the oxygen/nutrient demands of various tissues are met.A constant blood pressure in the arteries is maintained through the regulation of heart rate and force of contraction.Regulating the diameter of systemic arterioles helps to maintain constant blood pressure.Baroreceptors are important in the regulation of blood pressure.Question 7Most surveillance systems are passive and disease specific.AnswerTrueFalseQuestion 8Which of the following is not true regarding the immune response?AnswerThe immune response uses chemical and phagocytic cells to destroy foreign cells.Once initiated, the immune response provides protection for the entire body.The key to immune response is the ability of the components involved to be able to distinguish between the body cells and foreign cells.The immune response involves the activities of proteins, cells, and the lymphatic system.The immune response involves the ability to “remember” exposures to pathogens in order to increase the rate of response upon subsequent infections by that pathogen.Question 9The best definition of a poison is:Answerany chemical that is foreign to the bodyany substance that can potentially produce toxicityany substance that if present in the body in relatively small amounts that may produce serious injuryany poisonous substance produced by an organism


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