Question

The table shows a comparison of muscle cells and blood cells.

Patterns of Gene Expression
Genes For Muscle Cells Blood Cells
White Red (Immature)
Glycolysis enzymes On On On
Muscle proteins On Off Off
Glucagon Off Off Off
Hemoglobin Off Off On
Based on the table, which conclusion can be made?

Select {responseValue}
The factors that regulate gene expression for muscle proteins are active in red and white blood cells.

Select {responseValue}
The factors that regulate gene expression for glycolysis enzymes are active in muscle and blood cells.

Select {responseValue}
The gene that codes for glucagon is active only in muscle cells.

Select {responseValue}
The gene that codes for hemoglobin is absent from blood cells.

Answer 1

Select the second option.

Reason: Glycolysis enzymes are "On" in muscle cells and in the blood cells shown, so the regulatory factors for those genes are active in both muscle and blood cells.