Principles of Biology
2nd Edition
ISBN: 9781259875120
Author: Robert Brooker, Eric P. Widmaier Dr., Linda Graham Dr. Ph.D., Peter Stiling Dr. Ph.D.
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 41.4, Problem 1BC
In what other context have you learned aboutpositive feedback? Refer back to Figure 39.9 for help.
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A response is the body's reaction to the
stimulus.
What's the response in these situations?
Stimulus:
You hear a loud noise
· A large dog runs toward you,
growling and barking
You eat a large candy bar
You have not eaten in six hours
You have strep throat
Draw a diagram that shows how the parts of a positivefeedback loop interact. Include set-point, stimulus, sensor, control center, effector, and response in your drawing.
Positive feedback loops are used in chemical messaging in the body. Below is a list of steps that describe how a positive feedback system works in chemical messaging. The list is out of order. Placed the list in the proper order.
1. A sensor in a persons finger senses a change in the bloodstream.
2. The chemical messenger triggers the production of a specialized protein in the finger in response to the original signal.
3. A chemical messenger is released from the brain and travels to the finger.
4. As the specialized protein is made in the finger, it triggers the production of even more specialized protein.
5. The brain determines that conditions are no longer in homeostasis.
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- Which of the following statements is CORRECT in describing the positive feedback control systems in our body? Group of answer choices The response counteracts the stimulus, shutting off the response loop. The response reinforces the stimulus, sending the variable farther from the set-point. The response is able to move the variable closer to the set-point. The response is able to move the variable farther from the set-point by suppressing the stimulus.arrow_forwardAs a learner, can you consider illness alone seldom acts as an impediment to learning and why? Cite an example.arrow_forwardWhy is this question keep on getting rejected. Your other competitors seem to have answer this question and Bartleby can’t seem to answer it. I might have to consider cancelling this subscription and go with your other competitors. What accounts for the difference in how bonobos and chimps respond to strangers? Why can't chimps get the bananas in the experiment but the bonobos are able to? How does this information help us understand ourselves as humans?arrow_forward
- Innate behavior allows animals to respond instantly. The simplest innate behaviors are reflex actions. Discuss the difference between an animal reflex from an instinct. Cite specific examples to illustrate your concepts.arrow_forwardSelect the statements that correctly describe positive feedback pathways. 1. A sensor/receptor is required to monitor and limit levels. 2. A sensor/receptor is unnecessary to monitor and limit levels. 3. Feedback prevents homeostasis. 4. Feedback contributes to homeostasis. 5. Feedback stimulates the effector to continue to do the same thing. 6. Feedback stops the effector from doing one thing and stimulates it to do the opposite. 7. When the target level for a hormone is reached, feedback results in a reduction of that hormone being released. 8. When a target level for a hormone is reached, feedback results in an increase of that hormone being released. Record your answers in ascending (lowest to highest) order.arrow_forwardIn veterinary science What are 3 examples of mother nature's ID methods?arrow_forward
- What does nonverbal behavior means?arrow_forwardWhat is nonverbal communication?arrow_forwardWhile on a backpacking trip you are bitten by a poisonous snake and transferred to the nearest hospital, where you receive human immunoglobulin treatment against the poisonous snake venom. You recover from your snakebite and return home. One year later during an environmental studies field trip, you are bitten once again by the same type of snake. Please select the correct answers: O Compared to the first snakebite, are you equally sensitive to the venom from the second bite. There are no residual cells or antibodies that were involved in the original encounter with this snake venom and, therefore, no recall response. You are not protected from the second bite. The immunoglobulin you received 1 year ago protected you temporarily but those antibodies are now gone and you have no memory B cells to produce new antibodies during the second exposure. Antibodies in the serum bound to the snake venom and neutralized its ability to cause damage. Phagocytes then engulfed and destroyed…arrow_forward
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