Mic 102 Mt 2 Questions With Complete Solutions

Glucose - Lactose + {Ans: If there is no glucose, cAMP will be made and will bind to CAP and lacI will not repress lac operon transciption Lac operon will be transcribed Lac I will not be bound (when lactose is present lacI doesn't bind) Full transcription of lac operon}Human milk importance {Ans: provides the nutrients needed for growth of the developing infant human milk oligosaccharides}murien synthesis {Ans: pentapeptide added to N-acetyl mumaric acid (M) pentapeptide-M and N-acetyl glucosamine (G) are linked peptide MG is transported across CM by a lipid carrier peptide MG is added to growing polysaccharide chain by transglycosylases peptides covalently linked by transpeptidsaes *good antibiotic taget, we don't have murien, so won't hurt us*}mutations {Ans: change in genetic material change in DNA --> change in RNA--> change in protein can be neutral, harmful, beneficial beneficial ones give rise to diversity, adaptation to the environment natural selection removes non-beneficial mutations}human milk complexity {Ans: HMOs Proteins Lipids Lactose}True or False? The initiation of DNA replication is dependent upon the cell having sufficient energy resources. {Ans: True! If the cell does not have sufficient stocks of ATP, there will not be enough DnaA-ATP