Chapter 7, Problem 22A

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 energy transformations, food digestion, excretion of wastes and cell division. One of the main functions of the cell is also to produce proteins. Ribosomes are the sites where proteins are synthesized. They are made of RNA and proteins and are not membrane bound.

Answer to Problem 22A

Nucleolus produces ribosomes.

Explanation of Solution

A nucleus is the manager of a cell. Within the nucleus of a cell is a structure that is the site for ribosome production. It is called nucleolus. Nucleolus produces ribosomes. The ribosomes may move freely in the cytoplasm or are attached to endoplasmic reticulum. A cell has many ribosomes to produce a variety of proteins.