Portage Microbiology BIOD171 FINAL EXAM Questions and Answers Rated A+

Portage Microbiology BIOD171 FINAL EXAM Questions and Answers Rated A+ Nucleus contains genomic content in eukaryotic cells Endoplasmic reticulum series of membrane enclosed sacs and interconnected tubes Previous Play Next Rewind 10 seconds Move forward 10 seconds Unmute 0:09 / 0:15 Full screen Brainpower Read More Lysosomes contain hydrolytic enzymes for digestion Chloroplast Site of photosynthesis Briefly explain how a Scanning Electron Microscope (SEM) forms an image of a microscopic specimen. Answer: An image is formed from the interactions of electrons as they reflect off (not through) the surface of the specimen. Samples are coated in either gold or palladium to enhance electron reflections. The reflection is seen in 3-D rendering. Legionnaires legionella Wound botulism Clostridium botulinum Impetigo staph auerus Septicemic plague yersina pestis Yeast Eukaryote Mycobacterium Prokaryote Algae Eukaryote flu virus neither eukaryote or prokaryote Phototroph utilize photons to generate ATP from ADP lithotroph remove electrons from inorganic molecules autotroph obtain their source of carbon from inorganic molecules chemotroph acquire energy from preformed chemicals in the environment A researcher is looking to solidify an agent for growth media. What polysaccharide substance would he or she use? agar Place the following viral life cycle steps in order beginning with viral attachment (3points) and provide a description of "UNCOATING" (1 point). 1-Attachment: 2-Entry: 3- Uncoating: the viral capsid disassembles 4-Replication: 5-Release: 6-New infection: The action of alcohol during Gram staining is___________. Decolorizes the cell Left untreated, three percent of cases of Streptococcal pharyngitis will progress to which of the following? Rheumatic fever Describe TWO differences between DNA and RNA. Answer: Any of the following are acceptable answers: RNA contains the sugar ribose rather than deoxyribose. RNA is always single-stranded, whereas DNA is double-stranded. While RNA contains the bases adenine, guanine, and cytosine, it does not utilize the pyrimidine base thymine. Instead, RNA contains uracil (U), which still pairs with adenine (A). True or False. If the statement is false, change it to make it true. When grown on Blood Agar Plates (BAP), microbes capable of delta hemolysis designate the absence or lack of hemolytic activity, and the resulting colonies are often white/tan in color growing on the red background color of the unaffected blood agar plate. Answer: False; Gamma Hemolysis designates the absence or lack of hemolytic activity, and the resulting colonies are often white/tan in color growing on the red background color of the unaffected blood agar plate. Each of the following statements about the Electron Transport System is true, except: Occurs mainly in the nuclear membrane of the cell Describe the TWO main characteristics of LYSOGENIC (temperate) bacteriophage replication. (1) Exist in a non-replicative state that does not kill the host cell (2) Integrated into the host genome but production of viral proteins is suppressed Bacteria that have a round morphology are referred to as ______. Coccus You want to observe the movement of microorganisms that are present in a sample of cheek cells obtained on a patient. Briefly explain the technique that you would use and how it is performed. A wet mount stain is indicated. A small liquid culture (usually just a drop) containing a microorganism of interest is prepared, added to a slide, and then covered with a glass coverslip. The coverslip is present to both protect the objective and the specimen while also holding the microorganism in place. Wet mounts are used to observe the motility and behavior of an organism. What coronavirus-associated infection gave rise to quarantining and travel restrictions in 2003? SARS Also known as lysogeny broth, it is a multi-purpose media capable of growing a wide variety of microorganisms. LB Agar