GRADE 9 REVIEW

What is the Germ Theory?

• A theory about microorganisms causing diseases

• A theory about plants causing diseases

• A theory about bad luck causing diseases

• A theory about air pollution causing diseases

What is produced when meningococcus gets into the linings of the spinal cord or brain?

• Ulcers in the intestines

• Lockjaw

• Undulant fever

• Inflammation in the linings (meninges)

What did scientists isolate in 1880?

• A disease-causing plant

• A microorganism associated with typhoid

• A cure for all infectious diseases

• A disease-causing air pollutant

What is meningitis?

• Inflammation of the intestines

• Inflammation of the liver

• Inflammation of the lungs

• Inflammation of the meninges

These are one-celled organisms classified as members of the plant world.

• bacteria

• fungi

• rickettsiae

• virus

Most pathogenic organisms are ___________.

• microscopic

• cute

• macro

• macroscopic

Where do most microbes live in the alimentary canal?

• in the mouth

• in the intestines

• in the stomach

• in the tonsils

What is the area where microorganisms thrive in the mouth?

• in crevices of the teeth

• in the folds of the lips

• on the tongue

• on the gums

What are Robert Koch and Louis Pasteur known for in microbiology?

• discovering the structure of DNA

• developing a way to extract and purify insulin

• discovering the theory of evolution

• developing tests to indicate the presence of microorganisms in diseases

___________ is the general name for several species of single-celled animals.

• protozoans

• protozoa

• fungi

• virus