Which is the function of the cardiovascular system?

• to move water throughout the body
• to provide structural support for the body
• to eliminate waste from the body
• to transport gases throughout the body

Which statement BEST describes a bacterial cell?

• It contains more than one cell.
• It is a complete organism.
• It is part of a larger organism.
• It contains different kinds of cells.

Which characteristic do single-celled organisms and multi-celled organisms have in common?

• Both have cells with specialized functions for each life process.
• Both perform all life process within one cell.
• Both have a way to get rid of waste materials.
• Both are able to make food from sunlight.

Which are examples of inherited traits?

• specific beliefs
• fingerprints
• memories
• nose shape

Which body system send electrical signals to all other body systems?

• circulatory system
• digestive system
• muscular system
• nervous system

Which trait do children MOST LIKELY inherit from their parents?

• shape of earlobes
• musical ability
• personality
• language

Which is a characteristic of a dog that is MOST LIKELY a result of its environment? 

• its color
• its length of ears
• its food preference
• its ability to see in the dark

Why do multi-cellular organisms need transport systems? 

• Most have cells that aren't able to exchange gases with the outside environment.
• Most have cells that are unable to grow and survive in their environment.
• Most have cells that need food from sources outside their environment.
• Most have cells that require more energy to survive than single-celled organisms.

Which system of the human body provides protection to MOST of the major organs?

• skeletal system
• circulatory system
• respiratory system
• muscular system

Which example BEST shows structures that make up the digestive system in the human body?

• heart, blood, vessels
• nose, trachea, lungs
• brain, spinal chord, nerves
• esophagus, stomach, intestines