Question

skin cell small intestine cell muscle cell brain cell stem cell bone cell according to the data, what makes a skin cell different from a small intestine or bone cell? skin cells specifically have 6, 7 and 8 activated. skin cells specifically have 3, 4 and 9 activated. skin cells specifically have 1, 5 and 7 activated.

Explanation:

Step1: Analyze Skin Cell Bar Graph

Look at the bar graph for the skin cell. Identify the genes (1 - 10) with significant activation (non - negligible height).

Step2: Compare with Other Cells

Compare the activated genes in the skin cell graph with the small intestine and bone cell graphs.

• For the first option: In the skin cell graph, genes 6,7,8 have non - zero activation. When looking at the small intestine cell graph, genes 6,7,8 have very low (almost zero) activation. In the bone cell graph, genes 6,7,8 also have very low activation.
• For the second option: In the small intestine cell graph, genes 3 and 4 have high activation (similar to skin cell for gene 3 and 4 in some cases). So, having 3,4,9 activated is not unique to skin cells.
• For the third option: In the small intestine cell graph, gene 1 has some activation (not unique to skin cells).

So, the first option is correct as genes 6,7,8 are specifically (with non - negligible activation) for skin cells compared to small intestine and bone cells.

Answer:

Skin cells specifically have 6, 7 and 8 activated.