Q. Some Caminalcules went extinct without leaving descendents. In the real world, what factors may enhance or reduce the probability of a species going extinct? Find out one instance of convergent evolution among the Caminalcules. This means finding cases where two or more species have a similar characteristic that evolved […]

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 lesions? Cytotoxic antibody production Delayed-type hypersensitivity […]

AP Biology Design and complete a hands-on lab experiment to identify factors that influence the rate of respiration in yeast and to test a factor influencing the rate of respiration by using the materials below: bottle – screw-on lid (such as a baby bottle or water bottle) clay, modeling container […]

Think about the trp operon. For each situation below, indicate whether the cell will synthesize the enzymes coded by trpE, trpD, trpC, trpB, and trpA and be able to synthesize trypophan.Can tryptophan be synthesized in the cell for the following (yes or no answer):A mutation in the promoter: RNA polyermase […]