Analyze and Conclude Period 1. Compare and Contrast How are the graphs of a body chemical controlled by they different? negative feedback and a chemical controlled by positive feedback similar? How are p 2. Analyze Which is controlled by a negative feedback loop; blood glucose levels after eating or estrogen levels in the days prior to ovulation? Which is controlled by a positive feedback loop? 3. Infor It's around lunchtime and you are feeling hungry, so you eat a sandwich. When the food passes through your stomach and into your small intestine during digestion, your brain receives a signal causing you to feel full. Consequently, you do not eat any more food. Is this an example of negative or positive feedback? Explain. 4. Infor Mitochondria, the organelles involved in cellular respiration, can also generate chemicals called reactive oxygen species (ROSs).ROSs can damage mitochondria. Damaged mitochondria generate more ROSs than healthy mitochondri Is this an example of negative or positive feedback? 5. Conclude How is negative feedback related to bomeoutasis? __ Date

Question

Analyze and Conclude Period 1. Compare and Contrast How are the graphs of a body chemical controlled by they different? negative feedback and a chemical controlled by positive feedback similar? How are p 2. Analyze Which is controlled by a negative feedback loop; blood glucose levels after eating or estrogen levels in the days prior to ovulation? Which is controlled by a positive feedback loop? 3. Infor It's around lunchtime and you are feeling hungry, so you eat a sandwich. When the food passes through your stomach and into your small intestine during digestion, your brain receives a signal causing you to feel full. Consequently, you do not eat any more food. Is this an example of negative or positive feedback? Explain. 4. Infor Mitochondria, the organelles involved in cellular respiration, can also generate chemicals called reactive oxygen species (ROSs).ROSs can damage mitochondria. Damaged mitochondria generate more ROSs than healthy mitochondri Is this an example of negative or positive feedback? 5. Conclude How is negative feedback related to bomeoutasis? __ Date

Answer 1

1. Negative feedback graphs oscillate around a set point, while positive feedback graphs show exponential changes.2. Blood glucose levels after eating are controlled by negative feedback; estrogen levels prior to ovulation are controlled by positive feedback.3. Negative feedback.4. Positive feedback.5. Negative feedback maintains homeostasis by counteracting deviations from a set point.

Answer 2

1. Negative feedback stabilizes a system by reducing output when levels are high, while positive feedback amplifies changes, increasing output. Graphs of negative feedback show oscillations around a set point, while positive feedback graphs show exponential growth or decline.2. Blood glucose levels are controlled by negative feedback to maintain homeostasis. Estrogen levels prior to ovulation are regulated by positive feedback to trigger ovulation.3. Feeling full after eating is negative feedback as it reduces the behavior (eating) once the need (hunger) is satisfied.4. Damaged mitochondria generating more ROSs is positive feedback as the damage amplifies the production of ROSs.5. Negative feedback maintains homeostasis by counteracting deviations from a set point, ensuring stability in physiological processes.

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