Homeostasis MC

In the cell pictured, where would water move? 

• Into the cell, causing it to swell

• Out of the cell, causing it to shrink

• In and out of the cell equally, causing the shape to stay the same

What type of solution is this healthy looking red blood cell in?

• Isotonic

• Hypertonic

• Hypotonic

Which cell is in a hypotonic environment?

• A
• B
• C

Which cell is in a hypertonic environment?

• A
• B
• C

When a runner is running a marathon their blood vessels _______ to release heat.

• contract

• constrict

• dilate

• regulate blood pressure

The ability to maintain body temperature within a certain range is ...

• thermodynamics

• thermoregulation

• thermostat

• thermometer

Homeostasis

• allows for a wildly fluctuating internal environment
• is impossible in vertebrates
• is the maintenance of a relatively stable internal environment

• is the maintenance of a relatively stable external environment

What causes a high solute concentration in the blood?

• Dehydration
• Rehydration
• Hydration
• Concentrated

Homeostasis in the human body is often maintained by a: 

• the brain only

• positive feedback loop

• the muscles

• negative feedback loop

With low oxygen levels, your breathing rate will increase. When your oxygen levels rise, what is the appropriate response?

• stop breathing

• increase heart rate

• keep breathing rate high

• return breathing rate to baseline