BIO 205 Final Exam Questions With Verified Answers

BIO 205 Final Exam Questions With Verified Answers Resolving power of an optical microscope is defined as: - answerThe ability to distinguish two closely positioned objects as separate entities What is the total magnification produced by a microscope, using a 10x ocular lens and a 10x objective lens? - answer100x This scientist experimented on his son and developed the first smallpox vaccine: - answerEdward Jenner This man built the first crude compound microscope and coined the term "cell" to mean the smallest unit of life: - answerRobert Hooke Who discovered the first antibiotic, Penicillin? - answerAlexander Flemming Put the speculation of spontaneous generation to rest by developing the "swan necked" flask: - answerLouis Pasteur Archaea were reclassified based on their 16S rRNA sequence by this man in the 1970s. - answerCarl Woese 16S rRNA is an RNA molecule that is found in the - answerRibosome Spontaneous generation is defined as the generation of life from living matter***Spontaneous generation = same as biogenesis = life from non-life*** - answerFalse A phylogenetic tree is a diagram based on genetic data used to infer ___________ between organisms - answerEvolutionary relationships Which of the following statements concerning Koch's postulates is false? - answerF: Susceptible hosts are injected with a mixed culture of the suspected pathogens. True: A suspected pathogen must be isolated and grown in pure culture. True: Koch's postulates involve the experimental infection of susceptible hosts. True: the suspected pathogen must be isolated from the host that became infected. True: all of Koch's postulates must be satisfied before an organism can be proven to cause a particular disease. Archaea are common human pathogens - answerFalse Using microbes to degrade an oil spill would be an example of - answerBioremediation The taxonomical hierarchy proceeds from the most general to the most specific in which order? - answerDomain, Kingdon, Phylum, Class, Order, Family, Genus, Species You travel to Hawaii for a microbe sampling trip. You take water from a volcanic hot spring with very low pH (acidic) and very high temperatures (in excess of 60*C). Your environmental sample will likely be dominated by - answerArchaea A traditional binomial scientific name is written using which two taxonomic classifications? - answerGenus and Species Which of the following is NOT a known type of pathogen - answerAlgae Which two microorganisms are important in decomposition and nutrient recycling in the environment? - answerBacteria and fungus Lipopolysaccharide (LPS) is comprised of - answerLipid and sugar LPS is anchored in the ____________ of the cell wall - answerOuter membrane Lipid A is a(n) - answerEndotoxin Consider the shape and arrangement of these cells: They are classified as: (image of two rods connected to each other)***image of round = cocci. Cluster = staph - answerDiplobacilli... staphlococci Bacterial conjugation involves the transmission of genetic information from one bacterium to another bacterium through which structure? - answerPilus The bacterial flagellum is made of: - answerProtein In biofilm formation, attachment of the pioneering species is followed by: - answerColonization Gram-negative bacteria will be ________ after staining. - answerPink Which part of gram-negative bacteria is solubilized by the alcohol/acetone destain? - answerOuter membrane Identify the flagellar arrangement that is characterized by 1 or more flagella at both ends. (image two wiggly lines connected on both ends by three wiggly lines (each)) - answerAmphitrichous The size of most prokaryotic cells is measured in - answerMicrometers Peptidoglycan is comprised of - answerSugar and protein The nucleoid - answerContains the bacterial chromosome