ATAR Unit 2 Topic 1 Review

Select the example of a positive feedback mechanism.

• 
• 

The maintenance of homeostasis is important to multicellular organisms because ___________________________.

• They must keep their internal environment within a narrow range of conditions despite changes in their external environment.

• They require the ability to adjust their internal environment to match their external environment

• Their cells need to be able to respond rapidly to drastic changes in their external environment

• Their internal environment must provide their cells with a wide range of conditions

______________ produces the hormones that help regulate blood glucose levels.

• pancreas

• liver

• small intestine

• gall bladder

A chemical made by glands that gives a message to the cell, or makes the cell respond in some way is called a ______.

• carbohydrate

• protein

• enzyme

• hormone

Select the part of the brain that controls body temperature.

• cerebellum

• cerebrum

• hypothalamus

• medulla

The range of conditions in which the body can function is called _______________________.

• Homeostasis

• Tolerance limits

• Dynamic equilibrium

• Feedback system

Select the option where the response produced is opposite to the stimulus.

• Negative feedback

• Positive feedback

• Constructive criticism

• Irony

Select the option where the stimulus is reinforced by the response.

• Negative feedback

• Positive feedback

• Constructive criticism

• Irony

____________ is a change in the internal or external environment.

• Stimulus

• Receptor

• Modulator

• Effector

• Response

The ______________ carries out the response.

• Stimulus

• Receptor

• Modulator

• Effector

• Feedback