In the 1940s, Proteins Were Thought to Be the More

question 46

Multiple Choice

In the 1940s, proteins were thought to be the more likely molecules to house genetic information.What was the primary reason that DNA was not originally believed to be the genetic material?

• A)DNA has a high density of negative charges.
• B)Nucleotides were known to be a source of chemical energy for the cell.
• C)Both protein and nucleic acids were found to be components of chromosomes.
• D)DNA was found to contain only four different chemical building blocks.

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Definitions:

Accounting Rate of Return

A financial metric used to measure the profitability of an investment, calculated by dividing the average annual profit by the initial investment cost.

After-Tax Income

The amount of money an individual or company retains after all federal, state, and withholding taxes have been deducted from taxable income.

Payback Period

The time it takes for an investment to generate an amount of income or cash flow to recover the cost of the investment, indicating the investment's risk and liquidity.

Annual Cash Inflows

The total amount of money received by a company or individual in a year from various sources, excluding borrowings.