Diphtheria Is Considered to Be an Upper Respiratory Tract Infection

question 27

Multiple Choice

Diphtheria is considered to be an upper respiratory tract infection. However, it can have a very high mortality rate if not caught early and treated. Predict why this is so.

• A) It makes a toxin that can be carried in blood and produce organ damage, particularly the heart.
• B) It successfully hides from the immune system of the patient.
• C) The patient cannot eat or drink and so basically starves to death.
• D) The bacterium moves from the throat to the brain, causing strokes to occur.

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Capital Investment

Capital investment refers to funds invested in a business with the expectation of achieving long-term benefits, typically in the form of physical assets like machinery or buildings.

Rate of Return

The profit or deficit achieved from an investment within a certain timeframe, described as a proportion of the investment's initial value.

Net Annual Cash Inflow

The difference between the total cash inflows and outflows of a business over a one-year period.

Internal Rate of Return

A metric used in finance to estimate the profitability of potential investments, calculating the rate of return where the net present value of all cash flows is equal to zero.