Molecular Biology Homework Help and Solution

Please see the attached file for full problem description. --- 1. Researchers have identified an E.coli strain having constitutive expression of camp. What would be the effect on lac operon expression in the following media? What if this mutant also contained an O^- mutation? a. Glucose b. Lactose c. Glucose + Lactose 2. A mutant strain of E.coli has constitutive expression of the trp operon. How could this mutant phenotype result? 3. A mutant strain of E.coli expresses trp operon mRNA but still cannot synthesize trypophan. How could this mutant phenotype result? 4. Given the following data, what is the genotype of mutant X?

The importance of synthetic and semesynthetic antibiotics in comparison to natural antibiotics.

Why might synthetic and semesynthetic antibiotics be more useful than natural antibiotics? Knowing the prevalence rate and incidence rate of a disease, what other important information could you calculate about the disease? The BCG vaccine against tuberculosis is not very effective, and great efforts are being made to prosuce a better vaccine. Nevertheless, BCG vaccine does give some protection and it is routinely used in many countries of the world, but not in the USA (veternarians may obtain it in certain aresa). Since tuberculosis is far from eradicated in the united states, why would the BCG vaccine not routinely used here?

The association constant of GABA for the GABA receptor.

What is the association constant of GABA for the GABA receptor?

Tetrazolium test for determining viability of seeds

The performance of a seed can be determined by studying its germination and viability potential. One of the most significant advances in seed testing technology in recent years is the topographical tetrazolium method.

Understanding insulin and digestion.

Why is insulin typically taken as an injection?