Bio 250 Exam 1 Study Guide Perfect Solutions Relias Rn Pharmacology Exam Perfect Solutions

Diffusion moves particles from an area of _______ concentration to an area of ______ concentration. A. high; low B. low; high C. neutral; neutral D. neutral; high E. high; neutral {Ans: A.}What is a bacterium's maximum net gain of ATP molecules from aerobic catabolism of glucose? A. 2 B. 4 C. 8 D. 32 E. 38 {Ans: E.}Which of the following is a difference between a capsule and a slime layer? A. A capsule prevents the cell from drying out and a slime layer prevents phagocytosis B. A capsule helps cells bind to each other and the slime layer prevents a cell from drying out C. A capsule prevents phagocytosis and a slime layer helps the cell trap nutrients D. A capsule helps the cell trap nutrients and a slime layer prevents a cell from drying out {Ans: C.}Which of the following is a factor that can influence enzyme activity? A. pH B. Temperature C. Substrate concentration D. Product concentration E. All of these choices {Ans: E.}Illya "Elie" Mechnikov {Ans: First person to describe phagocytes and cell-mediated immunity (1845-1916)}Why do few microorganisms thrive on grains when they are properly harvested and stored? A. There is