Greatest Discoveries

The discovery of the X-ray happened after many months of tryin to see bones without cutting through skin.

• True

• False

Which of the following is NOT an effect that vitamins have on the human body?

• regulating metabolism

• promoting growth

• curing disease

• fighting infection

Why was penicillin considered a miracle drug?

• It is made from mold

• It cures deadly disease

• It prevents bacterial infections

• It was discovered during World War I

The discovery of four different blood types increased the success of blood transfusions, making _____ possible.

• new medicines

• organ transplants

• dissection

• blood testing

Edward Jenner discovered that inoculated people with the cowpox virus prevented them from getting ____.

• anthrax

• smallpox

• polio

• measles

The pancreas produces insulin in order to control levels of ___ in the body.

• blood sugar

• antibodies

• platelets

• hormones

What was surgery like before anesthesia was discovered?

• Patients had no pain relief during surgery

• Patients used laughing gas during surgery

• Patients lost a lot of blood during surgery

• Patients were put to sleep before surgery

HIV, the virus that causes AIDS, is a retrovirus.

• True

• False

Which of the following statements BEST defines a retrovirus?

• A retrovirus converts DNA into RNA

• A retrovirus causes lifelong infections

• A retrovirus is an old virus that infects new cells

• A retrovirus inserts its RNA to DNA into the host cell's genes.

Which of the following was NOT a discovery that William Harvey made about the body's circulatory system?

• Blood flows in a circle through the body

• Blood flows through pores in the tissues

• The heart has one way valves to direct blood flow

• Blood leaves the heart through arteries and returns through veins