Several Different Researchers Contributed to the Study of the Structure

question 60

Multiple Choice

Several different researchers contributed to the study of the structure of DNA. What did Rosalind Franklin contribute?

• A) X-ray crystallography was used to show DNA is a repeating helical structure
• B) The percent of adenine is equal to the percent of thymine and the percent of guanine is equal to the percent of cytosine
• C) There is a transforming factor that exists and can change bacteria's characteristics
• D) Transformation of bacteria did not occur with the addition of DNase enzyme, suggesting DNA is the genetic material

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Definitions:

Aging Method

A technique used in accounting to estimate uncollectible accounts receivable by categorizing them based on the length of time they have been outstanding.

Allowance for Doubtful Accounts

A contra-asset account used to reduce the total receivables reported to reflect only the amounts expected to be collected.

Bad Debts Expense

Bad debts expense represents the loss that a company anticipates or realizes from customers who are unable to pay their outstanding balances.

Uncollectible Accounts

Refers to receivables that a business has determined are unlikely to be collected due to customer default.