What is the purpose of the site-specific recombination system that acts during the replication cycles of both plasmids and bacterial chromosomes?
What will be an ideal response?
Ans: Because of sequences similarities, homologous recombination can occur between copies of circular DNA molecules, generating dimeric or multimeric circles. The site-specific recombination system exists to allow recombination to generate separate circular copies once again.
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Many cells of the immune system have receptors that detect peptidoglycans and lipopolysaccharides. How do pathogenic bacteria avoid detection?
A. Pathogenic bacteria lack cell walls. B. Pathogens often encase themselves in a gelatinous capsule. C. Peptidoglycans are absent from pathogenic bacteria. D. Disease is only possible if the immune system has been compromised by some other event. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? Gather Content · What do you already know about bacterial cell walls? How does it relate to the question? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which of the following acts in the small intestine to breakdown protein?
A) trypsin B) pepsin C) bile D) amylase
Activation of the ________ G-protein results in the extension of lamellipodia
Fill in the blank with correct word.
When diet and exercise has failed to produce any significant weight loss, some patients who are seriously overweight elect to have stomach surgery. A procedure galled gastric sleeve surgery removes more than half of the stomach, leaving a tube (or sleeve) about the size of a banana. Following gastric sleeve surgery, patients would have the least trouble ________.
A. eating large amounts of food at one time B. eating protein-rich foods C. eating large chunks of food of relatively hard consistency D. eating carbohydrate-rich foods