25 ML of a Growth Medium Containing Bacteria at a Concentration

question 1

Multiple Choice

25 mL of a growth medium containing bacteria at a concentration of 3  10⁵ cells per litre is diluted to a volume of 0.05 L. What is the concentration of bacteria after dilution?

• A) 1.5  10⁶ cells L^-1
• B) 1.75  10⁸ cells L^-1
• C) 6.7  10^-6 cells L^-1
• D) 6  10⁵ cells L^-1
• E) 1.5  10⁵ cells L^-1

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Definitions:

Carrying Value

The book value of assets and liabilities on a company's balance sheet, often equating to the cost minus depreciation for assets.

Historical Cost

The original monetary value of an asset, without adjustments for inflation, depreciation, or other factors since acquisition.

Bonds

Financial instruments representing a loan made by an investor to a borrower, typically corporate or governmental, where the borrower commits to paying back the principal along with interest on a specified schedule.

Amortized Cost

Amortized cost is an investment's acquisition cost adjusted for amortization, impairment charges, and any accumulated payment or receipts since acquisition.