At the PH Found in Cells (About 7

question 2

Multiple Choice

At the pH found in cells (about 7.0) ,what happens to the amino group on an amino acid?

• A)It acts as a base and gains a proton,giving it a positive charge.
• B)It acts as an acid and loses a proton,giving it a negative charge.
• C)It is reduced,and tends to act as an electron donor in redox reactions.
• D)It remains neutral,like water,and does not have a charge.

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Definitions:

Net Income

The amount of earnings left over after all expenses and taxes have been deducted from total revenue.

Revenue

The total amount of money received by a company for goods sold or services provided during a certain time period.

Break-Even Point

The break-even point is the point at which total costs and total revenues are equal, meaning there is no net loss or gain.

Variable Costs

Costs that vary depending on the level of production or sales.