The K+ channel is an example of a transmembrane protein (a protein that spans the phospholipid bilayer of the plasma membrane). What types of amino acids are likely to be found (a) lining the channel through which K+ passes; (b) in contact with the phospholipid bilayer containing fatty acid; (c) […]

In the experiment, we will establish microcosms to test the effect of illumination on relative abundance of our two ciliate phenotypes. You will use 3 beakers filled with water, and will inoculate these beakers with a mixed culture containing both phenotypes. Inoculation will involve adding a small volume of the […]

Bio Lab: Life Is Significant Design That Talks The molecular structure of oak wood is comparable in complexity to the structure of the Brooklyn Bridge. Your text uses this comparison to argue that ____________. Design at Multiple Levels Microbiological Architecture “Body systems work with each other in highly related ways.” […]

What’s Harming the Robins? Suppose a scientist observes an abnormality in the growth of robin embryos in a certain area. She knows the area has been sprayed with a pesticide and suspects the chemical may be causing the abnormalities she has observed. To test this hypothesis, the scientist carries out […]