The organelle that modifies, sorts, and packages proteins for secretion is the: MCQ with Answer and Explanation

Explanation:
Lysosomes are membrane-bound vesicles packed with hydrolytic enzymes (proteases, lipases, nucleases) that digest macromolecules, old organelles, and engulfed pathogens. They maintain an acidic pH (about 5.0) for optimal enzyme activity. Peroxisomes detoxify peroxides, mitochondria generate ATP, chloroplasts perform photosynthesis.

Explanation:
The natural greenhouse effect keeps Earth warm enough for life; its enhancement causes global warming. Statement 3 is incorrect. 1 and 2 are correct.

Explanation:
Prophase is the first stage of mitosis where chromatin condenses into visible chromosomes, the nucleolus fades, and the mitotic spindle begins to form. In metaphase chromosomes align, in telophase they decondense and the nucleolus reappears. Interphase is not a mitotic phase.