Your patient has a severe infection, and you want to get an antibiotic into his system as quickly as possible. You have two choices for your antibiotic, both of which must be injected into muscle and so must diffuse into his blood: PeniKill'Em, which must be stored in the refrigerator and has a molecular weight of 450 g/mol, or AzithroLyse'Em, which is stored at room temperature and has a molecular weight of 200 g/mol. Which drug wil you choose, and why?

A mixture of two proteins (both with mass of 50 kDa) with an molecular isoelectric points of 7.8 and 8.9, respectively, is in a buffered solution at pH 7. Which type of liquid chromatography would be used to separate these two proteins? O a. O b. O C. d. e. anion exchange chromatography size-exclusion column gel filtration Ni-NTA column cation exchange chromatography

You are designing an experiment to test the reaction of potato samples with varying amounts of surface area with equal amounts of hydrogen peroxide. In your experiment, you have two (2) small test tubes, labeled A and B respectively and each filled with 10 ml of hydrogen peroxide. A 1 cm3 cube of potato will be placed into Test Tube A. In Test Tube B, the same volume of potato (1 cm3) will be placed into this test tube, but this cube of potato will be cut into 8 pieces before being dropped into Test Tube B. After 5 minutes, which of the test tubes do you predict will show a greater amount of chemical reaction (the releasing of oxygen gas as seen through fizzing) between the potato sample containing the enzyme catalase and the hydrogen peroxide? Why?

Consider the depeptide below: (look at images) Use first image to answer second image questions.