Recall the Experiments of Rous and Colleagues

question 137

Multiple Choice

Recall the experiments of Rous and colleagues. If he had found that filtered cancer cell extract could not cause cancer when injected into healthy animals, what could he have deduced?

• A)Cancer may be caused by bacteria.
• B)An intact cancer cell is necessary to cause cancer.
• C)A large protein may cause cancer.
• D)All of these choices are correct.

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Definitions:

Annual Rents

Regular payments made for the use of property or land over a yearly basis.

Compound Interest Tables

Reference tables used to find the amount of compound interest earned or payable over a period of time, based on various rates and compounding frequencies.

Deferred Ordinary Annuity

A financial product where regular payments are deferred to start at a future date, often used for retirement savings.

Present Value

The current value of a future sum of money or stream of cash flows, discounted at a specific interest rate.