Unit 8 review (6th)

Which pathogen is non-living?

• Virus

• Bacteria

• Fungi

• Parasite/Protist

• They are all alive

Viruses reproduce themselves by...

• dividing into two identical copies
• causing cells to transform into viruses
• making host cells reproduce copies of the viruses
• planting eggs inside host organisms

Which of the following statements about pathogens is true?

• A pathogen describes anything that causes illness or disease
• Pathogens are all microscopic
• All pathogens are transmitted through the air from host to host
• All pathogens cause cells to swell and burst

Vaccines work by...

• killing pathogens that are already infecting a host
• helping antibodies build immunity against a specific pathogen
• causing the body to expel pathogens faster than normal
• preventing a specific pathogen from entering the body

which pathogen lives in or on a host?

• bacteria
• virus
• parasite
• fungus

Which list gives the correct order of food traveling

through the digestive system after it is swallowed?

• stomach, esophagus, large intestine, small intestine

• small intestine, large intestine, esophagus, stomach

• esophagus, stomach, large intestine, small intestine

• esophagus, stomach, small intestine, large intestine

Which of the following systems breaks food into nutrients

that can be used by the body?

• circulatory

• reproductive

• digestive

• respiratory

What does the heart do for the body?

• It takes oxygen in from the environment.

• It turns food into energy.

• It removes waste from the blood.

• It moves blood through the body.

Where does oxygen-rich blood go after leaving the lungs?

• the brain

• the heart

• the kidney

• the stomach

Which system protects from water loss and outside environment?

• respiratory

• integumentary

• endocrine

• digestive