Problem: OPTIONS:
- golgi bodies
- cell membrane
- nucleus
- in chloroplasts
Q: Answer the following question given this paragraph: Figure 8.6 Photosynthesis takes place in chloroplasts, which have an outer membrane and an inner membrane. Stacks of thylakoids called grana form a third membrane layer. Q: Where does photosynthesis occur in plants? A:
Answer: in chloroplasts
Problem: OPTIONS:
- relaxation
- digestion
- propagation
- peristalsis
Q: Answer the following question given this paragraph: The Esophageal Phase The entry of food into the esophagus marks the beginning of the esophageal phase of deglutition and the initiation of peristalsis. As in the previous phase, the complex neuromuscular actions are controlled by the medulla oblongata. Peristalsis propels the bolus through the esophagus and toward the stomach. The circular muscle layer of the muscularis contracts, pinching the esophageal wall and forcing the bolus forward. At the same time, the longitudinal muscle layer of the muscularis also contracts, shortening this area and pushing out its walls to receive the bolus. In this way, a series of contractions keeps moving food toward the stomach. When the bolus nears the stomach, distention of the esophagus initiates a short reflex relaxation of the lower esophageal sphincter that allows the bolus to pass into the stomach. During the esophageal phase, esophageal glands secrete mucus that lubricates the bolus and minimizes friction. Q: The entry of food into the esophagus marks the beginning of the esophageal phase of deglutition and the initiation of this? A:
Answer: peristalsis
Problem: OPTIONS:
- ultraviolet
- alpha
- toxic
- gamma
Q: Answer the following question given this paragraph: Look at the classroom in Figure below . It has several sources of visible light. One source of visible light is the sun. Sunlight enters the classroom through the windows. The sun provides virtually all of the visible light that living things need. Visible light travels across space from the sun to Earth in electromagnetic waves. But how does the sun produce light? Read on to find out. Q: Lead shielding is used to block what type of rays? A:
Answer:
gamma