Which organelle is known as the 'suicide bag' of the cell? MCQ with Answer and Explanation

Explanation:
Polymerase Chain Reaction (PCR) is a powerful molecular technique used to exponentially amplify a specific segment of DNA, creating millions of copies from a small initial sample. Gel electrophoresis is a laboratory method used to separate DNA, RNA, or protein molecules based on their size and charge by applying an electric field through a gel matrix. Restriction enzymes are molecular scissors that cut DNA at specific sequences; DNA ligase is the enzyme that joins DNA fragments together. Thus, statements 1 and 2 are correct.

Explanation:
Chloroplasts contain chlorophyll and thylakoids, where light reactions occur, and stroma for the Calvin cycle. They convert light energy to chemical energy.

Explanation:
Cataract is clouding of the crystalline lens, causing blurred vision and eventual blindness if untreated. It is often age-related or due to UV exposure. Myopia is nearsightedness, glaucoma optic nerve damage, astigmatism irregular curvature. Cataract is treated by surgical removal and lens replacement.