Feedback Mechanisms Quiz

The two types of feedback systems that help organisms maintain homeostasis are:

• Receptor and effector

• Positive and negative

• Minor and Major

• Static and dynamic

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Maintaining body temperature is an example of which feedback loop?

• Negative Feedback loop

• Positive feedback loop

• all of the answers

• None

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When glucose levels in the blood rise, your brain sends a signal to your pancreas. The pancreas releases insulin, which opens channels in cell membranes to allow glucose to enter the cell, lowering blood sugar levels. This is an example of which feedback loop?

• Negative Feedback Loop

• Positive Feedback Loop

• Both

• None

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An example of a positive feedback loop is ____________.

• Childbirth

• sweating and shivering

• running from dinosaurs

• Scratching an itch

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Homeostasis

• is impossible in vertebrates

• Is the maintenance of a relatively stable INTERNAL environment

• Is the maintenance of a relatively stable EXTERNAL environment

• Allows for a wildly fluctuating internal environment

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Rapid growth during puberty causes your body to release more and more growth hormones. As you grow, more and more growth hormones are released until puberty is reached, and then the hormones stop. Which feedback loop is described?

• Negative feedback loop

• Positive feedback loop

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What type of feedback loop is shown?

• Neutral

• Positive

• Negative

• This does not require a feedback response

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When you get cut, your skin cells release hormones that signal platelets to come and stop the bleeding. Platelets then release more hormones that signal even more platelets to help stop bleeding. The hormone signals continue to increase until the cut is closed. This is an example of what type of feedback?

• Negative feedback loop

• Positive feedback loop

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_________ work together to maintain homeostasis

• control systems

• populations

• organ systems

• external forces

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An example of a positive feedback loop is ____________. (choose 2)

• Childbirth

• Sweating and Shivering

• Blood pressure and shock

• Scratching an itch

Tags

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