Compare the Following Sequences Taken from Four Different Proteins, and Select

question 65

Multiple Choice

Compare the following sequences taken from four different proteins, and select the answer that BEST characterizes their relationships. A
B
C
1 DVEKGKKIDIMKCS
HTVEKGGKHKTGPNLH
GLFGRKTGQAPGYSYT
2 DVQRALKIDNNLGQ
HTVEKGAKHKTAPNVH
GLADRIAYQAKATNEE
3 LVTRPLYIFPNEGQ
HTLEKAAKHKTGPNLH
ALKSSKDLMFTVINDD
4 FFMNEDALVARSSN
HQFAASSIHKNAPQFH
NLKDSKTYLKPVISET

• A) Based only on sequences in column B, protein 4 reveals the greatest evolutionary divergence.
• B) Comparing proteins 1 and 2 in column A reveals that these two proteins have diverged the most throughout evolution.
• C) Protein 4 is the protein that shows the greatest overall homology to protein 1.
• D) Proteins 2 and 3 show a greater evolutionary distance than proteins 1 and 4.
• E) The portions of amino acid sequence shown suggest that these proteins are completely unrelated.

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Definitions:

Contribution Margin Ratio

A ratio that shows the contribution margin as a percentage of total sales, indicating how much of the revenue is available to cover fixed costs and generate profit.

Fixed Expenses

Expenses that do not fluctuate with changes in production volume or sales, such as rent and salaries.

Variable Expenses

Costs that change in proportion to the level and nature of business activity, such as advertising, sales commissions, and shipping costs.

Cost Volume Profit Analysis

A managerial accounting technique used to determine the effects of changes in costs and volume on a company's profits.