A Biochemist Is Analyzing an Aqueous Solution of a Pure

question 7

Multiple Choice

A biochemist is analyzing an aqueous solution of a pure unidentified macromolecule that she isolated from the cytosolic fraction of plant cells.After adding an enzyme that catalyzes the breaking of phosphodiester bonds, she observes that the macromolecule disappears.What is the most likely explanation?

• A)The macromolecule was a polysaccharide from the cell wall.
• B)The macromolecule was DNA from the chloroplast and mitochondria.
• C)The macromolecule was a protein from the cytosol.

---

Definitions:

Interest Rate

The percentage charged by a lender to a borrower for the use of assets, typically expressed as an annual percentage of the principal.

Normal Return

The minimum profit necessary to keep a company in business, regarded as the cost of capital in the long run.

Investment

The allocation of resources, usually money, in order to earn a future return or profit.