简答题The cytoplasmic membrane must be in a(n) ________ state for proper functioning. A、semi-fluid B、stable C、elastic D、neutral简答题Proteins involved in prokaryotic cell division are A、divisomes B、MreB proteins. C、Fts proteins D、none of these.简答题__________ is a class of synthetic antibacterial compounds that interact with bacterial DNA gyrase. A、Quinolones B、Isoniazid C、Sulfanilamide D、None of them简答题What is the function of bactoprenol? A、It supplies the energy necessary for transpeptidation to occur. B、It is responsible for forming the peptide cross-links between muramic acid residues in adjacent glycan chains. C、 It triggers the recruitment of FtsZ and the initiation of the divisome. D、It is a hydrophobic alcohol that transports peptidoglycan precursors across the cytoplasmic membrane.简答题Cryptic growth occurs when A、 the number of cells being generated equals the number of cells dying. B、increases in cell population go unnoticed. C、he exponential curve is marked by a very long generation time. D、cells are increasing in size but not in number.简答题Antimicrobial agents used in vivo should be A、Selective toxicity B、Non-toxicity C、Cytotoxicity D、Neurotoxicity简答题Cephalosporins are a class of __________ antibiotics. A、beta-lactam B、aminoglycoside C、macrolide D、tetracyclines简答题In Microbiology,growth is defined as an increase in A、the number of cells. B、the size of individual organisms. C、the number of colonies present in a culture. D、the life span of individual cells.简答题Formation of the divisome begins with the attachment of which protein in a ring around the center of the cell? A、MinC B、MinE C、ZipA D、FtsZ简答题The process by which two cells arise from one is known as A、meiosis B、conjugation C、binary fission. D、mitosis简答题A microbe growing in a refrigerator is likely a A、thermophile B、mesophile C、psychrophile D、hyperthermophile简答题Streptomycin is a kind of __________ antibiotics. A、aminoglycoside B、beta-lactam C、macrolide D、tetracyclines简答题In most fungi,___________ replaces the cholesterol found in higher eukaryotic cell membranes. A、ergosterol B、dipicolinic acid C、isoprene D、tetraether简答题Sulfanilamide is an analog of __________, which is a part of the vitamin folic acid. Sulfanilamide acts by blocking the synthesis of folic acid, a nucleic acid precursor. A、Peptidoglycan B、Penicillin C、p-aminobenzoic acid D、None of them简答题Cell density in a chemostat is controlled by A、the dilution factor. B、the concentration of the limiting nutrient. C、the size of the initial inoculum. D、all of them