Label the following descriptions as examples of negative feedback or positive fe

Question

Label the following descriptions as examples of negative feedback or positive feedback. a. You have just suffered a bad laceration in your leg and have lost a significant amount of blood. Your blood pressure drops due to the blood loss. Your body responds by constricting blood vessels and increasing your blood pressure. b. While going outside on a cold morning, your skin temperature drops slightly. Your body responds by shivering in an effort to warm up. c. A woman is about to deliver a baby. Her uterus stretches, sending a signal to the brain to release the hormone Oxytocin. Oxytocin travels in the blood to the uterus stimulating it to contract. Place the following events associated with negative feedback in the correct sequence. Begin with: the set point is unstable and place the following options in order after the italicized statement. a. Sensors detect an error signal b. The integrating center determines the appropriate response and sends signals to the effectors c. The effectors act to alter the error signal back to set point d. The new set point is stable e. The integrating center receives information Bagels are composed of starch. After you have eaten a bagel, the starch is broken down into its smaller subunits of glucose where it can be absorbed by the small intestine. What form of metabolism is exemplified by this reaction? Can you explain why? a. Anabolism b. Catabolism c. Both d. Neither Research indicates that a drug may inhibit initiation of transcription in some cells. At what location in the cell does this drug likely exert its effect? a. cytosol b. extracellular space c. nucleus d. plasma membrane e. nuclear membrane

Explanation / Answer

16.
a. positive feedback
b. negative feedback
c. positive feedback
17.
the set point is unstable
sensors detect an error signal
the integrating center receives information
the integrating center determines the appropriate response and sends signals to the effectors
the effectors act to alter the error signal back to set point
the new set point is stable
18. the breakdown of glucose for release of energy is a destructive metabolism named catabolism
19.a.cytosol

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