Chapter 7, Problem 23A

Summary Introduction

To fill:

The correct term in the given blank.

Introduction:

Each cell has different organelle to perform specific tasks. Membrane bound organelle make it possible for different processes to occur simultaneously in a cell. A cell is involved in protein synthesis, food digestion, excretion of wastes and cell division. One of the main functions of the cell is also to produce energy.

Answer to Problem 23A

Mitochondrion generates energy for a cell.

Explanation of Solution

A mitochondrion is the site for generating energy for the cell. It converts fuel particles like sugars into usable energy. A mitochondrion has an outer membrane and a highly folded inner membrane that has increased surface area for breaking the bonds in sugar molecules. This results in production of energy which is stored in the bonds of other molecules and is later used by the cell. Hence, mitochondria are often referred to as the “powerhouses” of cells.