HD is called an autosomal dominant disorder because only one copy of the defective gene, inherited from one parent, is necessary to produce the disease. The genetic defect responsible for HD is a small sequence of DNA on chromosome 4 in which several base pairs are repeated many, many times.
Carbon dioxide cannot pass through the protective waxy layer covering the leaf (cuticle), but it can enter the leaf through an opening (the stoma; plural = stomata; Greek for hole) flanked by two guard cells. Likewise, oxygen produced during photosynthesis can only pass out of the leaf through the opened stomata.
7th Grade Life Science . Photosynthesis & Cellular Respiration Study Guide . 1. What is the overall reaction (formula) for photosynthesis? 6CO. 2 + 6H. 2. O + sunlight C. 6. H. 12. O. 6 + 6O. 2. Carbon Dioxide and Water and sunlight yield Glucose and Oxygen . 2. How does this compare to the overall reaction for cellular respiration? Photosynthesis and Cellular Respiration are the reverse reactions of each other. 3. Where does the energy for photosynthesis come from? The sun . 4. What plant pigment is involved in photosynthesis? Chlorophyll . 5. How does your body get the energy it needs from the food you eat (what process allows cellular energy to be made)? Cellular Respiration . 6. In what organelle of a plant cell does photosynthesis take place? Chloroplast . 7. What are the products of photosynthesis? Glucose and Oxygen . 8. Write the equation for photosynthesis (CO2WS GO). Make sure you memorize it. 6CO2 + 6H2O + sunlight C6H12O6 + 6O2. 9. What is the overall reaction (formula) for cell respiration?