Characteristics of living things

Living things maintain homeostasis 

• true

• false

Answer explanation

They keep a stable internal environment

Living things obtain and use energy

• true

• false

A change in an organism's surroundings that causes it to react is called

• a stimulus.
• a response.
• development. 
• energy.

All information needed for the organism to live, grow, and reproduce is written on a DNA molecule.

• true

• false

The study of life and living organisms

• chemistry

• biology

• physics

In all of our cells there is DNA. Which characteristic of life does this fact best describe?

• living things respond
• living things maintain internal balance
• living things are based on a universal genetic code
• living things grow and develop

Which of the following characteristics of living things best explains why your legs and arms get longer and stronger as you get older? 

• living things respond to their environment
• living things maintain internal balance
• living things are made of cells
• living things grow and develop

The smallest living unit is...

• a cell.

• an organelle.

• a virus.

• a tissue.

Living things grow and develop

• true

• false

Answer explanation

All multicellular organisms start as one single cell! During development it divides again and again.

Living things are made of cells

• true

• false