Golden Rice is a genetically modified crop developed primarily to combat the deficiency of: MCQ with Answer and Explanation

Golden Rice is a genetically modified crop developed primarily to combat the deficiency of:
A. Vitamin A
B. Iron
C. Vitamin C
D. Protein
Answer: Option A
Solution (By JKExamLibrary)
Golden Rice is a transgenic variety of rice (Oryza sativa) engineered to produce beta-carotene, a precursor of Vitamin A, in the edible endosperm. The beta-carotene gives the rice grains a characteristic golden-yellow color. It was developed to address Vitamin A deficiency (VAD), a major public health issue in developing countries that causes blindness and increases susceptibility to infectious diseases in children.

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Practice More Biology Questions

Question #1
The lymphatic system consists of lymph, lymph nodes, and:
A. Arteries
B. Lymphatic vessels
C. Capillaries only
D. Veins

Correct Answer: Option B


Explanation:
The lymphatic system includes lymph, lymphatic capillaries, vessels, ducts, and lymphoid organs (nodes, spleen, thymus). It returns tissue fluid to the blood, absorbs fats, and defends against pathogens.

This question belongs to: Science Biology
Question #2
Assertion (A): Mitochondria are called semi-autonomous organelles. Reason (R): They possess their own DNA and ribosomes and can synthesize some proteins.
A. Both A and R are true, and R is the correct explanation.
B. A false, R true.
C. A true, R false.
D. Both A and R are true, but R is not the correct explanation.

Correct Answer: Option A


Explanation:
Mitochondria have circular DNA and 70S ribosomes, enabling them to transcribe and translate some proteins independently, hence semi-autonomous. They still depend on nuclear genes for most proteins. The reason correctly explains the assertion.

This question belongs to: Science Biology
Question #3
The process of breakdown of glucose to pyruvate is called:
A. Electron transport chain
B. Fermentation
C. Krebs cycle
D. Glycolysis

Correct Answer: Option D


Explanation:
Glycolysis is a cytoplasmic pathway that converts glucose into two pyruvate molecules, producing a net of 2 ATP and 2 NADH. Krebs cycle and ETC are in mitochondria.

This question belongs to: Science Biology