Life Processes and Homeostasis

What is an organism made of one cell called?

• Unicellular

• Multicellular

It is hot outside. You start sweating. In this case, the hot weather is the...

• stimulus

• response

• cause and effect

• responder

The combination of chemical reactions through which an organism builds up or breaks down materials as it carries out its life processes is called...

• absorption

• metabolism

• digestion

• consumption

Maintaining a stable internal environment is called:

• Homeostasis

• Equilibrium

• Balance

• Evenness

A baby songbird hatches from its egg while both parent songbirds are watching. Which characteristic of life does this represent?

• All living things reproduce

• All living things maintain homeostasis

• All living things use energy

• All living things grow

A camel has eyelashes that work to keep the dust and sand out of its eyes. Which characteristic of life does this represent?

• All living things adapt to their environment

• All living things grow

• All living things have cells

• All living things use energy

Rocks are not considered living because

• they never move

• they aren't necessary for humans

• they are not made of cells

• they don't break down

Which of the following is an example of homeostasis?

• Adapting to your environment.

• Maintaining an appropriate respiration rate.

• The sum of all your chemical reactions.

• Being composed of more than one cell.

Which of the following is a stimulus?

• Removing your hand from a hot stove

• Swinging a bat at a baseball

• Screaming when something scares you

• A ball moving from the pitching mound to home plate towards a batter

Which of the following is a response?

• A flashlight being shined into the eye

• A rubber band popping on your hand

• Your pupils constricting when exposed to bright light

• Blood glucose levels dropping significantly