Experiment 15 — Who Does What in the Cell?

Topic: Biology · Class 9 · The fundamental unit of life: cell organelles

Aim: Match all five jobs to the right organelle.

Daily: A cell is a factory: a power house, a packing department, a transport system and a waste-disposal unit, all inside something too small to see.

A: Releasing energy is the job of the mitochondria — the power house of the cell, where respiration releases energy as ATP.

B: Making proteins is done by the ribosomes , tiny granules often attached to the rough endoplasmic reticulum.

C: Packing and dispatch belongs to the Golgi apparatus , which modifies, stores and sends out materials.

D: Digesting waste is the work of the lysosomes , full of powerful enzymes; they are called suicide bags because they can destroy their own cell.

E: Control and chromosomes belong to the nucleus , which directs all the cell’s activities.

Question: Which organelle is called the “power house” of the cell?

Exp: It releases energy from food during respiration.

Question: Lysosomes are called suicide bags because they…

Exp: They are full of powerful digestive enzymes.

Exp: Often on the rough endoplasmic reticulum.

Question: Chromosomes are found in the…

Exp: They carry the genetic instructions.

Question: Which organelle has its own DNA?

Exp: Mitochondria and plastids both do.