microbiology final straighterline Exam Questions With 100%Verified AnswersA+GRADED

microbiology final straighterline Exam Questions With 100%Verified AnswersA+GRADED phylogeny - correct answer...The study of evolutionary relationships among organisms is called ______. Last Universal Common Ancestor - correct answer...The three cell types discussed, eukaryotes, archaea, and bacteria, all derived from ______. always harmful to their host - correct answer...Organisms called parasites are ______. Thermal hot springs warmed by heat from earth's interior - correct answer...Which of the following does not indicate microbe involvement in energy and nutrient flow? Electrons - correct answer...The subatomic particles that surround the nucleus are the ______. respiratory disease - correct answer...The number one worldwide infectious diseases are ______. saturated - correct answer...A fat is called _____ if all carbons of the fatty acid chain are single-bonded to 2 other carbons and 2 hydrogens. lipid - correct answer...One technique for staining bacteria for viewing under the microscope is called the Gram stain. In this technique, alcohol is used as a decolorizer because it degrades the outer membrane found in some bacteria. What chemical component of the cell does alcohol affect? 95X - correct answer...If a microbiologist is studying a specimen at a total magnification of 950X, what is the magnifying power of the objective lens if the ocular lens is 10X? cell size of 0.5 to 2 microns - correct answer...NASA has published a list of criteria for identifying fossil bacteria in samples from Mars, as part of a search for evidence of life. Which of the following is good evidence for the presence of bacterial cells? electron - correct answer...Which type of microscope achieves the greatest resolution and highest magnification? a solid medium - correct answer...Which of the following is produced by adding 1% to 5% agar to nutrient broth that is then boiled and cooled? Creutzfeldt-Jacob disease - correct answer...a spongiform encephalopathy of humans amphitrichous - correct answer...The term that refers to flagella at both poles of the cell is ______. saprobe - correct answer...In the condition called athlete's foot, the fungus Trichophyton consumes the keratin protein found in hair, nails, and dead skin. Which of the following descriptors does not apply to Trichophyton? gram-negative - correct answer...During the Gram stain, the application of alcohol results in the decolorization of ______ cells. 80s - correct answer...The size of a eukaryotic ribosome is ______ Bacterial cells are typically between 1-10 μm and are blocked by the filter, whereas most viruses are between 20 and 200 nm and therefore pass through. - correct answer...Sterilizing filters have a pore size of 0.22 μm. Which of the following statements is true? icosahedral - correct answer...One of the principal viral capsid shapes is a 20-sided figure with 12 evenly spaced corners referred to as a/an _____ capsid. fecal oral - correct answer...Amoebic dysentery is most commonly contracted through lysogeny - correct answer...the viral genome inserting into bacterial host chromosome envelope - correct answer...Which of the following is not associated with every virus? palisade - correct answer...When bacilli in a chain fold back upon each other like a hinge, this cellular arrangement is termed a ______. histones - correct answer...proteins associated with DNA in the nucleus. tropisms - correct answer...Viral tissue specificities are called ______. lophotrichous - correct answer...the term that refers to the presence of a tuft of flagella emerging from a single site is ______. mutualistic - correct answer...E. coli bacteria normally live in the human gut and produce vitamin K that the body uses. This is best termed a ______ relationship. mutualistic - correct answer...Termites are insects that require the protozoan Trichonympha in their gut to synthesize the enzyme cellulase to degrade the cellulose in wood. The protozoan uses the end products of the cellulose breakdown (glucose). This is a(n) ______ relationship. lag phase - correct answer...The phase of the bacterial growth curve in which newly inoculated cells are adjusting to their new environment, metabolizing but not growing at an exponential rate, is the ______. hypotonic - correct answer...The cell wall will help prevent the cell from bursting in ______ conditions. photoheterotroph - correct answer...This microbe is photosynthetic, but in the absence of light it can use organic compounds as an energy source. Its carbon source is an organic compound. The appropriate classification for this organism would be ______. thermoduric microbe - correct answer...A microorganism that has an optimum growth temperature of 37°C, but can survive short exposure to high temperatures is called a(n) ______. Noncompetitive inhibition - correct answer...the end product binding to enzyme in noncompetitive site catalysts for RNA splicing - correct answer...Ribozymes are ______. coenzymes - correct answer...Most electron carriers are ______. 2 - correct answer...what is the usual net production of ATP? aerobic cellular respiration - correct answer...Exergonic reactions occur during one phosphate, one nitrogenous base, and one sugar - correct answer...Each nucleotide is composed of deletion and insertion - correct answer...A frameshift is caused by ______ mutations. genomics refers to the study of an organism's entire genome, whereas proteomics is the study of expressed proteins - correct answer...The fields of genomics and proteomics differ in that