Choose the One Most Appropriate Answer for Each

question 56

Multiple Choice

Choose the one most appropriate answer for each.
-Chargaff

• A)Discovered that the hereditary system of one strain of bacteria could be transformed by the hereditary system from another strain of bacteria
• B)First to describe DNA and extract it from cell nuclei
• C)Discovered that DNA-digesting enzymes prevented bacterial transformation
• D)The first to build an accurate model of DNA and to describe it explicitly in a publication
• E)The first to demonstrate, through the use of radioactive isotopes, that DNA, not protein, is the genetic material
• F)Provided two important clues to the structure of DNA; one clue is that A = T and the other is that C = G
• G)Worked at King's College at the same time as Franklin
• H)Obtained excellent x-ray diffraction photographs that suggested that DNA was a long, thin molecule with regularly repeating units

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Definitions:

Trade Surplus

A situation in which a country's exports exceed its imports, leading to a positive balance of trade.

Export

Goods or services sold by a country to another country, contributing positively to the selling country's balance of trade.

C + I + G Curve

An economic model representing the total spending in an economy, comprising Consumption (C), Investment (I), and Government Expenditures (G).

Regressive Tax

A taxation mechanism where the tax rate effectively decreases as the taxable amount (income or assets) increases, placing a higher relative burden on lower earners.