Which of the following is a characteristic feature of a carrier protein in a plasma membrane? a. it is a peripheral membrane protein. b. it exhibits a specificity for a particular type of molecule. c. it requires the expenditure of cellular energy to function. d. it works against diffusion. e. it has few, if any, hydrophobic amino acids.

Which factors changed throughout the mice experiment

You are given an electron micrograph of a bacterial cell. in the micrograph you can clearly see three thin layers of different densities surrounding the cell. based on the micrograph, you can infer that this cell is and would appear after application of the gram stain procedure. gram-negative / pink gram-positive / purple gram-positive / pink gram-negative / purple

One drawback of dams is that they can flood land upstream from the dam and reduce water flow downstream from the dam. a. true b. false