GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What is the cell wall made of?
A
Cellulose
B
Glucose
C
DNA
D
Empty Space
Explanation: 

Detailed explanation-1: -The cell wall is composed of a network of cellulose microfibrils and cross-linking glycans embedded in a highly cross-linked matrix of pectin polysaccharides. In secondary cell walls, lignin may be deposited.

Detailed explanation-2: -Cellulose is a natural polymer made of smaller sugar units. It is present in cell walls of plant cells. It gives remarkable strength to the cell. It also helps in the absorption of water thus, preventing desiccation of cell.

Detailed explanation-3: -Cellulose is a molecule, consisting of hundreds – and sometimes even thousands – of carbon, hydrogen and oxygen atoms. Cellulose is the main substance in the walls of plant cells, helping plants to remain stiff and upright. Humans cannot digest cellulose, but it is important in the diet as fibre.

Detailed explanation-4: -Cellulose is the most significant structural component of plant cell wall. Cellulose, polysaccharide containing repeated unbranched (1-4) D-glucose units, is synthesized at the plasma membrane by the cellulose synthase complex (CSC) from bacteria to plants.

Detailed explanation-5: -Cellulose is a polysaccharide composed of a linear chain of -1, 4 linked d-glucose units with a degree of polymerization ranged from several hundreds to over ten thousands, which is the most abundant organic polymer on the earth.

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