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The antibiotic penicillin interferes with transpeptidation of the peptidoglycan cell wall. In simple terms explain what this means. Give three reasons why this leads to lysis of the cell. During which phase of the bacterial growth curve would penicillin be most effective? Explain why.
1.the sequence of amino acids is the structure of proteins.a.primaryb.secondaryc.tertiaryd.quaternarye.stereo2.the
Can viruses evolve? Why or why not? a. No, only their hosts can evolve. b. Yes, their genetic make-up responds to natural selection. c. No, they are not alive. d. Yes, they are able to alter their genetic code directly in response to selection pre..
Define HeLa cells and where did they come from? Using specific examples, discuss how these cells have contributed to the advancement of our understanding of human biology.
A 20 year old garden presents to his family for treatment of what he described as poison ivy. The patient hand and arm appear red and are covered with oozing blisters and crusts. Which of the following best describes the pathogenesis of this skin ..
q. children with i-cell disease i for inclusion bodies synthesize perfectly good lysosomal enzymes except secrete them
q1. assume you performed a gram stain on a sample from a pure culture of bacteria and observed a field of red and
The final elution of your miniprep plasmid DNA has a concentration of 250 ng/uL. You need to load 500 ng on an agarose gel to be able to see the DNA.
After leaving the end of a ski ramp, a ski jumper lands downhill at a point that is displaced 66.2 m horizontally from the end of the ramp.
many corporations are offering health risk assessments to help employees understand their risks for certain diseases.
Compare the general structure of an animal cell with a plant cell and a bacterial cell: What additional step would you have to take to extract the DNA of plant or bacterial cells?
You are studying the expression of a proto-oncogene in a cancer cell and comparing it to expression in a non-cancer cell. You have done experiments to detect the presence of the proto-oncogene
In cucumbers, a black spine color on the fruit is dominant to white spines and orange mature fruit color is dominant to cream mature fruit color. Both are monogenic traits.
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