Microsoft Word – Exam IV Practice Questions.docxMicrosoft Word – Exam IV Practice Questions.docx

1. As you know, all living things require a source of nutrients. Using animals as an example, explain what these nutrients are used for once they leave the digestive tract.
2. Cyanide is a deadly poison that reacts with hemoglobin in our blood and prevents it from binding oxygen. Cyanide also binds to a molecule in the electron transport chain and blocks the flow of electrons down the chain. Explain why both these mechanisms will stop ATP synthesis.
3. One of the most common misconceptions about cellular respiration is that we inhale oxygen and that this oxygen is converted to carbon dioxide, which we exhale. Explain what happens to the oxygen we inhale during cellular respiration. Then explain where the carbon dioxide we exhale comes from in cellular respiration.
4. Plants and animals are mutually dependent on each other. Explain the energy-producing metabolic processes used by plants and animals, and name the products that result. Describe how animals benefit from the products of plant metabolism and how plants benefit from the products of animal metabolism.
5. You perform an experiment using an aquatic plant called elodea to determine which color of light is most effective at driving photosynthesis. You take three plants, immersed under water, and place plant A under blue light, plant B under red light, and plant C under green light. You notice bubbles coming off the leaves. More bubbles are coming from plants A and B, and few are coming from plant C. Explain how these bubbles are being produced. How do these results determine which color of light is most effective at driving photosynthesis?

6.   Plants make ATP during the light reactions of photosynthesis. Why do plants also need to carry out the process of cellular respiration? In      your answer, explain what ATP produced from both processes are used for. 

Microsoft Word – Exam IV Practice Questions.docx

Important Terms

Potential energy Kinetic energy Endergonic reaction Exergonic reaction Coupled reaction Enzyme

Substrate

Activation energy Oxidation
Reduction
Glycolysis
Fermentation
Krebs Cycle
Electron Transport Chain

ATP synthase Stomata Thylakoids Chlorophyll Light reactions Calvin Cycle Carbon fixation