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Questions 1-8: Answer the following essay questions in a short paragraph. Each question is worth four points. 1. Compare and contrast directional selection and disruptive selection, and provide an example of each. 2. Many pathogenic bacteria species are becoming resistant to antibiotics. Explain how such adaptations can develop through the […]

1. “Secretors” (genotypes SS and Ss) secrete their A and B blood group antigens into their saliva and other body fluids, while “nonsecretors” (ss) do not. What would be the apparent phenotypic blood group proportions among the offspring of an IAIB Ss woman and an IAIA Ss man if typing […]

1. Describe an operon, the regulatory proteins, the cellular process and the molecules being “sensed”. 2. Include details about the orientation of the genes and the promoter/operator sequences or activator binding site. 3.Provide details about the repressor/activator and inducer/inhibitor proteins. 4. explain how the operon helps microbe survive and possibly […]

Q1. The chemical reactions involved in respiration are almost identical between prokaryotic and eukaryotic cells. In eukaryotic cells, ATP is synthesized primarily on inner membrane of the mitochondria. Where are the corresponding reactions likely to occur in prokaryotic respiration? Q2. Your body contains vast numbers of carbon atoms. How is […]