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- 1. Multiple Choice
What is the point of a feedback loop?
To provide the body with more energy
To provide the body with more food
To make sure the conditions in the body are always changing
To make sure the conditions in the body remain stable
- 2. Multiple Choice
A feedback loop best fits which characteristic of life?
Cells
Organization
Homeostasis
Adaptation
- 3. Multiple Choice
In this body temperature feedback loop, predict what would happen if cooling mechanisms were NOT activated?
The body would not warm up.
The body would not cool down.
Your body would get colder and colder.
Your body would release lots of heat.
- 4. Multiple Choice
According to the feedback loop, what does high blood sugar promote?
Insulin Release
Glucagon Release
Insulin Uptake
Glycogen Uptake
- 5. Multiple Choice
What happens if stretch receptors are activated in the uterus?
Oxytocin will cause uterine muscles to relax
Contractions will get weaker
The baby will be born later than normal
The brain will signal for the release of oxytocin
- 6. Multiple Choice
If the anterior pituitary does not release TSH, what will happen?
Thyroid follicles will not release T3 and T4
The hypothalamus will release TRH
- 7. Multiple Choice
What is the difference between what will happen if their is too much Glucose or too little Glucose? SELECT ALL THAT APPLY
With too much Glucose, Insulin is released. With too little Glucose, Glucagon is released.
With too much Glucose, the pancreas produces insulin. With too little Glucose, the pancreas produces glucagon.
With too much Glucose, Glucagon is released. With too little Glucose, Insulin is released.
There is no difference.
- 8. Multiple ChoiceFailure to maintain homeostasis could result in:lack of internal balanceeventual deathdifficulty carrying on metabolismall three
- 9. Multiple ChoiceThe two types of feedback systems that help organisms maintain homeostasis are:positive and negativereceptor and effectorstatic and dynamicminor and major
- 10. Multiple ChoiceMaintaining body temperature is an example of a:negative feedback looppositive feedback loop
- 11. Multiple ChoiceThe process of childbirth is an example of:negative feedback looppositive feedback loop
- 12. Multiple ChoiceHumans have ___ for body temperature, blood glucose concentrations, electrolyte concentrations, pH levels, tendon tension and variables.positive feedback mechanismsset pointsa wide internal rangeno regulation
- 13. Multiple ChoiceThe "cause" for something to happen is theresponseeffectstimulushomeostasis
- 14. Multiple ChoiceThe "effect" of a given stimulus is the...responsestimuluscauseresult
- 15. Multiple ChoiceThe name for a chemical made by glands that tell cells to make something or respond in some way.acidenzymeperspirationhormone
- 16. Multiple ChoiceWhen 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 until the cut is closed.Positive Feedback ResponseNegative Feedback Loop
- 17. Multiple ChoiceWhen 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.Positive Feedback ResponseNegative Feedback Loop
- 18. Multiple ChoiceRapid 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.Positive Feedback ResponseNegative Feedback Loop
- 19. Multiple ChoiceIf the calcium in your blood decreases below homeostasis levels, a gland in the brain will sense the decrease and send a chemical message to your bones. Your bones will release calcium into the blood, bringing blood calcium levels back up.Positive Feedback ResponseNegative Feedback Loop
- 20. Multiple ChoiceAs you get dehydrated, your blood becomes thicker and harder to pump. Your kidneys will respond by stopping urine production, sending the water from urine into your bloodstream to thin your blood back to normal level.Positive Feedback ResponseNegative Feedback Loop
- 21. Multiple ChoiceNegative Feedback Loops:amplify processesprevent small changes from getting largerare initiated during childbirthare found only in plants
- 22. Multiple ChoiceWhat does the term "steady state" refer to with respect to the process of homeostasis?balanced external environmentbalanced internal environmentchanging external environmentchanging internal environment
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