OBJECTIVE LIFE SCIENCE
MOLECULAR BIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A scientist uses a special chemical marker to label some amino acids. He follows the marker until is becomes part of a large molecule in a cell. Which molecule does he find the chemical marker on?
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a DNA molecule in a mitochondrion
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a lipid in a membrane
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an enzyme in a lysosome
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a polysaccharide in a cell wall
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Explanation:
Detailed explanation-1: -NADPH cytochrome c (cyt c) reductase and glucose-6-phosphatase, two enzymes thought to be restricted to the endoplasmic reticulum (ER) and widely used as ER markers, are present in isolated Golgi fractions assayed immediately after their isolation.
Detailed explanation-2: -The marker enzymes for the Golgi apparatus include latent inosine diphosphatase (IDPase) and a number of glycosyl transferases, including glucan synthase I and sterol glucosyl transferase.
There is 1 question to complete.