Answer :
Final answer:
The correct answer is a) X-gal. X-gal is a chromogenic substrate that is used to detect the activity of the enzyme Gal (beta-galactosidase). When Gal acts on X-gal, it cleaves off the galactose portion of the molecule, resulting in the formation of a blue colored product.
Explanation:
The correct answer is a) X-gal.
X-gal is a chromogenic substrate that is used to detect the activity of the enzyme Gal (beta-galactosidase).
When Gal acts on X-gal, it cleaves off the galactose portion of the molecule, resulting in the formation of a blue colored product. This allows researchers to identify cells or organisms that contain active Gal enzyme.
Learn more about Gal (beta-galactosidase) and X-gal here:
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