Question

scarlett wants to know which organelles are directly responsible for the production of new molecules. which group is correct? a) endoplasmic reticulum, plastids, vacuoles b) ribosomes, endoplasmic reticulum, golgi apparatus c) nucleus, lysosomes, cell wall d) mitochondria, ribosomes, chloroplasts

Explanation:

• Ribosomes synthesize proteins (new molecules).
• Endoplasmic Reticulum (ER) modifies and helps in transporting these molecules; rough ER has ribosomes for protein synthesis.
• Golgi Apparatus processes, packages, and modifies molecules (like proteins, lipids) for transport or use.
• Option A: Vacuoles store substances, Plastids (e.g., chloroplasts make glucose but the group has vacuoles which don't produce new molecules directly in the same way).
• Option C: Nucleus is control center, Lysosomes digest, Cell Wall is structural—none directly produce new molecules as a group.
• Option D: Mitochondria produce ATP (energy), Chloroplasts make glucose, but Ribosomes here paired with them—mitochondria and chloroplasts don't work with ribosomes in the same "production line" for new molecules as the B group.

Answer:

B) Ribosomes, Endoplasmic Reticulum, Golgi Apparatus