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 […]

1. What is the difference between growth and development?2. What is the difference between a zygote and an embryo?3. What are the two hemispheres of the frog yolk and what is the role of each?4. The typical frog has 7 developmental stages. List two of those stages and one important […]

The drug warfarin is an anticoagulant that is used after heart surgery to inhibit blood coagulation and diminish the risk of forming dangerous clots. This drug has a very narrow therapeutic index (i.e. concentration in plasma at which drugs is inhibits major clot formation, but does not prevent basal levels […]