Chapter 8, Problem 33A

Summary Introduction

Introduction :

The illustrated figure is of mitochondria which is an essential cell organelle present in the cytoplasm of almost all the living eukaryotic cell. It is the site of cellular respiration. Mitochondria is the powerhouse of the cell because it produces energy from the oxidation of glucose.

Answer to Problem 33A

Correct answer :

The correct answer is option (B) mitochondria.

Explanation of Solution

Explanation/justification for the correct answer :

Option (B) mitochondria. The illustrated figure is a rod shaped cell organelle which is carrying out respiration and producing ATP. Therefore, the cell organelle is the mitochondria. Thus, the correct answer is an option (B).

The explanation for the incorrect answer :

Option (A) Golgi apparatus. The illustrated figure is not Golgi apparatus or Golgi body because it is a series of flattened membranous sacs present in the cell cytoplasm close to the endoplasmic reticulum (ER). Thus, this is an incorrect option.

Option (C) nucleus. The illustrated figure is not nucleus because it is not spherical and not showing chromatin fibres. Thus, this is an incorrect answer.

Option (D) endoplasmic reticulum. The illustrated figure is highly folded membranous structure hence, it is not endoplasmic reticulum. Thus, this is an incorrect answer.