IB Multiple Choice - Respiration

Test yourself on IB Multiple Choice - Respiration

• Why is it beneficial for cells to use ATP rather than directly using the energy stored in the bonds of carbohydrates to power cellular reactions?

• However, organisms produce carbon dioxide as they take in oxygen. To provide accurate measurements, what would you need to add to the setup?

• According to the data, the crickets at 25°C have greater oxygen consumption per gram of tissue than do the crickets at 10°C. This trend in oxygen consumption is the opposite of that in mice.
  
  The difference in trends in oxygen consumption among crickets and mice is due to what?

• A new species of obligate anaerobe, a bacterium, has been found that lives in hot, acidic conditions. While other pathways may also be present, which metabolic pathway is the most likely to be present in this species?

• What evidence provides the strongest support that glycolysis is an older and more conserved pathway than the citric acid cycle?