Some Friends Are Trying to Make Wine in Their Basement

question 38

Multiple Choice

Some friends are trying to make wine in their basement. They've added yeast to a sweet grape juice mixture and have allowed the yeast to grow. After several days, they find that sugar levels in the grape juice have dropped, but there's no alcohol in the mixture. The most likely explanation is that ________.

• A)the mixture needs more sugar; yeast need a lot of energy before they can begin to produce alcohol
• B)the mixture needs less oxygen; yeast only produce alcohol in the absence of oxygen
• C)the mixture needs more oxygen; yeast need oxygen to break down sugar to produce alcohol
• D)the mixture needs less sugar; high sugar concentrations stimulate cellular respiration, and alcohol is not a by-product of cellular respiration

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Definitions:

Sales

The transactions where goods or services are exchanged for money or considerations.

Marginal Tax Rate

The rate at which the next dollar of taxable income would be taxed, reflecting the progressive nature of tax systems.

Average Tax Rate

The ratio of the total amount of taxes paid to the total taxable income, representing the average portion of income that is paid as tax.

Progressive Tax

Progressive tax is a taxation system where the tax rate increases as the taxable amount or income increases, placing a higher burden on those with higher incomes.