GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following cell structures forms a barrier between the cell and environment in plant cells, but not in animal cells?
A
DNA
B
nucleus
C
cell wall
D
ribosomes
Explanation: 

Detailed explanation-1: -The plasma membrane or cell membrane is the outermost layer in the animal cell and the second outermost layer in the plant cell. Functions as a physical barrier between the external environment and the inner cell environment.

Detailed explanation-2: -The outer lining of a eukaryotic cell is called the plasma membrane. This membrane serves to separate and protect a cell from its surrounding environment and is made mostly from a double layer of proteins and lipids, fat-like molecules.

Detailed explanation-3: -Cell Wall. The cell wall is a rigid layer that surrounds the plasma membrane of a plant cell. It supports and protects the cell. Tiny holes, or pores, in the cell wall allow water, nutrients, and other substances to move into and out of the cell.

Detailed explanation-4: -The cell wall of the plant is made of cellulose. Animal cells do not have a cell wall. They have a cell membrane that is an essential barrier that separates the inner parts of the cell from the outside environment while also controlling the movement of substances inside and out of the cell.

Detailed explanation-5: -The plasma membrane or cell membrane is a thin flexible layer around the cells of all living things. Its basic job is to separate the inside of cells from the outside. In all cells, the cell membrane separates the protoplasm inside the cell from its surroundings.

There is 1 question to complete.