A bowl of sugar water is very stable. However, cells can rapidly break down sugar into carbon dioxide and water. What is the best explanation for this observation?
A. Breakdown of glucose has a negative delta G outside of cells, but a positive delta G inside cells.
B. Enzymes in the cell catalyze the breakdown of glucose.
C. Living cells make the water warmer, speeding up the reaction.
D. Cells use energy to break down glucose.
E. The water is activated by the presence of living cells.
F. Glucose becomes more chemically reactive inside a cell.
Answer: B
You might also like to view...
In T. brucei rhodesiense trypanosomiasis infections, CNS invasion occurs early. The disease progresses rapidly, and death may occur before extensive CNS involvement. Inflammation of which organ is more common and severe with this disease form?
a. Kidney b. Lungs c. Liver d. Heart
A major fully reduced form of carbon, important in biogeochemical cycling is ________.
A. hydrogen sulfide B. carbohydrate C. methane D. carbon dioxide
Which of the following is not part of the lower respiratory system?
A. Sinuses B. Trachea C. Bronchi D. Bronchioles E. Alveoli
Initial treatment for tetanus in an unimmunized person with a puncture wound is
A) tetanus toxoid. B) tetanus immune globulin. C) penicillin. D) none; no action is necessary. E) debridement.