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Question #45153
The Question
Read the following statements regarding the biofortification, physiological utilization, and regulation of Golden Rice. Which of the following statements is INCORRECT?
Options
- A.
Golden Rice contains transgenes that express enzymes like phytoene synthase, enabling the biochemical synthesis of β-carotene specifically in the rice endosperm.
- B.
The ingested β-carotene is transported directly to the photoreceptor cells of the retina, where it is enzymatically cleaved into retinal for rhodopsin synthesis.
- C.
The commercialization and large-scale field trials of such transgenic crops in India are strictly regulated by the Genetic Engineering Appraisal Committee (GEAC).
- D.
The primary clinical objective of this genetic modification is to alleviate Vitamin A deficiency disorders, such as xerophthalmia, in populations consuming rice as a staple.
Check Your Answer
Correct Answer
Step-by-Step Solution
Explanation
How the Examiner Thinks
Regulatory_Failure
Understand how NOT, EXCEPT, and logical constraints are used to manipulate exam results.
Concepts Behind This Question
Beta-carotene|Phytoene_synthase|Genetically_Modified_Organisms
Why This Question Is Tricky
Common Mistakes
Location Trap & Inter-unit Synthesis: The conceptual pivot relies on confusing the site of 'action' (retina) with the site of 'metabolic conversion' (intestinal mucosa).
Students often assume that because Vitamin A is used in the retina, provitamin A (β-carotene) is converted there.
This question successfully integrates NCERT Class 12 Biotechnology (Golden Rice, GEAC) with Class 11 Human Physiology.
Quick Facts About This Question
Question Information
| Subject | Biology |
| Chapter | Biotechnology and Its Applications - Class 12 |
| Concept | Golden Rice Nutrition |
| Difficulty | 8 |
| Cognitive Load | 5 |
| Target Solve Time | 120 sec |
| Access | Free |