When you step out into the cold, your body shivers in order to keep its temperature at 98.6F. Which characteristic of life does this represent?

• All living things use energy

• All living things contain cells

• All living things maintain homeostasis

• 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 living because

• they never move
• they aren't needed for humans
• they are not made of cells
• they don't break down

The basic unit of structure and function in the human body is the....

• organ
• organ system
• cell
• tissue

Which statement describes ALL living things?

• They are composed of one or more cells.

• They must reproduce sexually.

• They have organ systems to carry out the processes of life.

• They are capable of making their own food.

A baby song bird hatches from its egg with both parent songbirds 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

The following are all characteristics of life EXCEPT:

• made of cell(s)

• eat food

• respond stimuli

• reproduce

Which characteristic is shown: A plant switches position and follows the sunlight throughout the day.

• Grow and develop

• Respond to a stimulus

• Acquire and use energy

• Reproduce

Which of the following is NOT an example of an adaptation?

• birds migrating during the winter months

• the total sum of all the chemical reactions in your body

• humans evolving the ability to digest lactose (sugar in milk)

• the ability of dolphins to communicate in aquatic environments

Which of these is not true about all organisms?

• all living things are multicellular

• all living things obtain and use energy

• all living things reproduce