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Week 4 Critical thinking

Week 4 Critical thinking

Q 1. Predict what will happen in the following experiment based on what you know about photosynthesis and cellular respiration. o You place a plant alone in a covered airtight container in the presence of sunlight. Assume a watering system is provided. What will happen to the plant (will it live or die), and why? o You place a mouse alone in a covered airtight container with food and a source of water. What will happen to the mouse, and why? o You place a plant and a mouse together in a covered airtight container with food, water, and sunlight. What will happen to the plant and the mouse, and why? 2. A genetic mutation results in cells containing mitochondria with unfolded cristae. What generalizations can you make about this persons metabolism?

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1. Photosynthesis and cellular respiration: • If this is a C3 plant, in the presence of sunlight and water the plant will do photosynthesis within the tight container by absorbing carbon di-oxide generated by the same plant during its respiration. The plant will survive. • In an airtight container the mouse will not survive despite having food and water. Because the mouse will inhale oxygen and exhale carbon di-oxide during respiration. At one point the oxygen will finish and the jar will be filled with carbon-di oxide. The mouse will die.