Straighter line microbiology Final exam Test Questions And Answers Verified 100% Correct

Straighter line microbiology Final exam Test Questions And Answers Verified 100% Correct The time interval from parent to two new daughter cells is called... - ANSWER The generation time The cell wall will help prevent the cell from bursting in ___ conditions - ANSWER hypotonic Mediated transport of polar molecules and ions across the plasma membrane utilizes a __ carrier that binds to the substance and causes a conformational change to allow its movement across the membrane. - ANSWER Protein 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... - ANSWER photoheterotroph The most likely place where an exoenzyme participates in a chemical reaction is... - ANSWER outside the cell Noncompetitive inhibition is best described as - ANSWER end product binding to enzyme in noncompetitive site. exergenic reactions - ANSWER occur during aerobic cellular respiration When enzyme action stops due to a buildup of end product that acts as a regulatory molecule, this control is called - ANSWER noncompetitive inhibition The light-harvesting units in the thylakoid membranes are the... - ANSWER photosystems Glycolysis and the Krebs cycle yield 10 molecules of NADH per molecule of glucose. How many molecules of ATP will be made from them in the electron transport system? - ANSWER Which of the following metabolic system descriptions is mismatched? - ANSWER Convergent- a linear pathway branches into two or more alternative processes Eukaryotic chromosomes differ from prokaryotic chromosomes because only eukaryotes have... - ANSWER histone proteins, chromosomes in a nucleus, several to many chromosomes, elongated, no circular, chromosomes A permanent, inheritable change in the genetic information is called... - ANSWER a mutation The DNA of an organism is made up of subunits called... - ANSWER nucleotides Which of the following is not true of transposons? - ANSWER They are always part of plasmids The transfer of DNA fragments from a dead call to a live, competent recipient cell that results in a changed recipient cell is termed... - ANSWER transformation The field of genomics refers to - ANSWER the study of an organisms complete genome, including plasmid, mitochondrial and chloroplast DNA Satellite viruses are - ANSWER dependent on other viruses for replication When a eukaryotic cell is not undergoing mitosis, the DNA and its associated proteins appear as a visible thread-like mass called... - ANSWER chromatin All of the following pertain to glycolysis except - ANSWER it degrades glucose to co2 and h20 Glycolysis... - ANSWER occurs without oxygen, ends with formation of pyruvic acid, occurs during fermentation and involves reduction of NAD You apply the acid-fast method to a patients specimen, in aspirate from the lungs. Microscopic examination reveals a large number of bright pink-red bacillus- shaped bacteria in the smear. Which statement is true? - ANSWER the patient has tuberculosis The microorganisms that recycle nutrients by breaking down dead matter and wastes are called... - ANSWER decomposers Bacteria that require special growth factors and complex nutrients are termed... - ANSWER fastidious The toxic superoxide ion is converted to harmless oxygen to two enzymes... - ANSWER superoxide dismutase and catalase methanogens- - ANSWER convert CO2 and H2 into methane Extreme halophiles- - ANSWER adapt to salty habitats Psychrophiles - ANSWER adapt to very low temperatures Hyperthermophiles - ANSWER adapt to high temperatures thermoplasmas - ANSWER adapt to frozen environments ATP differs from the nucleotides found in the DNA in the... - ANSWER sugar protein of the molecule In the cell, energy released by elcetrons is often used to phosphorylate... - ANSWER ADP Histones are... - ANSWER proteins associated with DNA in the nucleus. Which type of microscope achieves the greatest resolution and highest magnification? - ANSWER electron Which group of microorganisms is composed only of hereditary material wrapped in a protein covering? - ANSWER viruses The endosymbiotic theory says that precursor eukaryotic cells acquired cilia by endosymbiosis with a ___ ancestor and others gained photosynthetic ability from endosymbiosis with a ___ ancestor. - ANSWER spiral, Cyanobacteria The process of forming glucose from various metabolic intermediates is called... - ANSWER gluuconeogenesis The division of microbes termed the Firmicutes have a cell wall type best described as... - ANSWER gram- positive All of the following are polysaccharides except... - ANSWER sterols in cell membranes. Polysaccharides - ANSWER dextran in some bacterial slime layers, agar used to make solid culture media, cells glycocalyx, and cellulose in certain cell walls viral nucleic acid types include which of the following? - ANSWER Double-stranded DNA, single-stranded DNA, double- stranded RNA, and single-stranded RNA The envelope of enveloped viruses... - ANSWER is obtained by viral budding or exocytosis An example of an amphipathic molecule found in living cells is ___ - ANSWER