B.Bacteria C.Eubacteria Correct D.Eukarya Answer Key: D Question 2 of 12 2.0/ 2.0 Points The shape of a bacterial cell is determined (and maintained) by the A.cell membrane Correct B.cell wall C.capsule D.slime layer Answer Key: B Question 3 of 12 2.0/ 2.0 Points The most important component of bacterial cell walls is A.teicoic acid B.lipotechoic acid Correct C.peptidoglycan D.glutamic acid Answer Key: C Question
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new plasmid (pMV158GFP)‚ which lacks the malR protein and is mobile and has the GFP gene to be used to track the flow of genes between bacterial cells through conjugation. A plasmid with these qualities is necessary to create a plasmid that can be transferred to Gram-positive bacteria low in C&G (which are hard to transform with traditional means) by conjugation with other bacteria. Current vectors have the malR regulatory protein which imposes a problem because when active‚ the malM gene is not
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BIO1130 - Archean Eon Keywords - Shivan Desai Aerobic: Requiring oxygen to survive‚ and perform life functions. (Aerobe-Organisms that require oxygen for cellular respiration.) Aerobic respiration is a characteristic of eukaryotic cells‚ even though prokaryotic cells can use aerobic respiration as well. Helps produce allot of ATP. Example: Kreb’s Cycle. Anaerobic: Doesn’t require oxygen to survive and perform life functions. (Anaerobe-Organisms that don’t require oxygen to live)
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* In addition to many layers of peptidoglycan‚ the cell wall of Gram-positive bacterials cells also contain: * Teichoic acid * There are two forms * Wall teichoic acids – go part way through the wall. * Lipoteichoic acids – go completely through the wall and link to the plasma membrane * Both forms protrude above the wall‚ which gives the bacterial cell a negative charge * M protein * This is a virulence
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to be resistant to kanamycin only. It also possessed the LacZ gene and conjugation results showed that it did not possess the oriT gene the tra gene. Plasmid number 12 was found to be pRP1:: Tn501 as it was resistance to all three antibiotics. It was also found out that this plasmid did not possess the LacZ gene as evidenced by the white colonies. pRP1:: Tn501 had oriT gene as well as the tra gene as shown in the conjugation results. The use of plasmids in very beneficial towards humans and these
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cytoplasm of bacterial cells? 23.What surrounds the outside of all bacterial cells? 24. Cell walls of true bacteria contain ____________________. 25. Some bacteria have a sticky ____________ around the cell wall to attach to __________ or other bacteria. 26. Besides the circular chromosome‚ where else can DNA be found inside a bacterial cell? 27. What is the size of most bacterial cells? 28. Compare the size of bacteria to the tip of a pin. 29. ____________ of the bacterial cell membrane
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providing a way for them to adapt to difficult conditions” (Levy 2002‚ 83). Horizontal gene transfer can occur through conjugation‚ transposition‚ transduction‚ and transformation. These forms of horizontal gene transfer have led to several ways for antibiotic resistant genes to be obtained. The acquiring of these resistant genes allow bacteria to stop the function of antibiotics. Conjugation is a physical bridge between two bacteria that has cell-to-cell contact. The bacterium produces a fine filamentous
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down the street. Bacteria have the ability to do this. Through the processes of transformation‚ transduction‚ and conjugation bacteria are able to exchange DNA and as a result increasing genetic variety. “In transformation‚ the recipient bacterium takes up extracellular donor DNA. In transduction‚ donor DNA packaged in a bacteriophage infects the recipient bacterium. In conjugation‚ the donor bacterium transfers DNA to the recipient by mating.” Horizontal gene transfer also allows bacteria to acquire
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appendage of a prokaryotic cell that helps it adhere to the substrate or to other cells; also known as an attachment pilus. c. sex pilus iii. In bacteria‚ a structure that links one cell to another at the start of conjugation; also know as a conjugation pilus d. Nucleoid iv. A dense region of DNA in a prokaryotic cell. e. Plasmid v. A small‚ circular‚ double stranded DNA molecule that
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progeny phage will have either a labeled DNA core or a labeled protein coat. By tracing the radioisotopes‚ Henry ands chase were able to demonstrate that most of the P- labeled DNA was transferred into the bacterial cell following adsorption‚ and the S labeled protein cells remained outside the bacterial cell and was recovered in the phage goats after the blender treatment. Hershey and Chase ‚ along with others who had done related experiments‚ confirmed that DNA was a biomolecule that carried genetic
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