BELK SCIENCE F/LIFE-MASTRG. BIOL.AC+EBK
6th Edition
ISBN: 9781323907634
Author: BELK
Publisher: PEARSON
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Chapter 18, Problem 3AAATB
Summary Introduction
To describe:
A non biological example of the positive and the negative feedback.
Introduction:
The feedback can be of two types positive and negative. The positive feedback is a feedback in which the products enhance the procedure by which the product is formed, resulting in further formation of the products. The negative feedback is the system by which the products inhibit the process of formation of product and result in decreased formation of product.
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Describe the components of a negative feedback loop.
Describe a general physiological control system, includingthe role of negative feedback.
Define the term negative feedback loop and positive feedback loop and explain how they differ from each other.
Chapter 18 Solutions
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- give two examples of feedback mechanisms in the human body. identify the type of feedback (negative or positive), the receptor, the control center and effector.arrow_forwardGive an example of a positive feedback system?arrow_forwardExplain what is meant by positive feedback. Is positive good?arrow_forward
- Explain why stabilizing mechanisms are called negative feedback.arrow_forwardExplain the role of antagonistic effectors in maintaining homeostasis, and the nature of positive feedback loops.arrow_forwardExplain the importance of regulatory mechanisms in living things. Distinguish between positive and negative feedback.arrow_forward
- Define homeostasis. What happens when homeostasis fails? List the three basic components of a control system and give an example. Describe the components of a reflex pathway. Contrast the response loop and the feedback loop. Explain the relationship between a regulated physiological variable and its setpoint. Is the physiological variable exactly at its setpoint? Compare and contrast negative and positive feedback. Give a biological example of each. Is the setpoint constant or can it change over time? If setpoints can change over time, what is this called? Chapter 2:arrow_forwardSelect the statements that correctly describe positive feedback pathways. A sensor/receptor is required to monitor and limit levels. A sensor/receptor is unnecessary to monitor and limit levels.arrow_forwardDefine homeostasis, and identify the components of negative feedback loops.arrow_forward
- Explain how homeostasis is maintained (use the term feedback loop, stimulus, response, effector, sensor, control center and set point )arrow_forwardPositive feedback processes invloves : a) Work in anticipation of changes in regulated variable b) Lead to instability of the regulated variable. c) Tend to force physiological variables back to set point, opposite direction of deviation d) Ten to force physiological variables away from their set point, further deviating itarrow_forwardIn discussions of feedback in biological systems, negativefeedback is typically emphasized, and positive feedback is oftentreated as an anomaly. In fact, positive feedback is common inreproductive physiology. List two or three examples of positivefeedback. Explain how positive feedback functions to advantagein each case. If possible, discuss whether homeostasis is alwaysideal.arrow_forward
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