GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following organelles forms a boundary between a cell and the outside environment and controls the movement of materials into and out of the cell?
A
endoplasmic reticulum
B
cell membrane
C
cell wall
D
nucleus
Explanation: 

Detailed explanation-1: -The cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.

Detailed explanation-2: -That’s because all cells are surrounded by a structure called the cell membrane-which, much like the walls of a house, serves as a clear boundary between the cell’s internal and external environments. The cell membrane is sometimes also referred to as the plasma membrane.

Detailed explanation-3: -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-4: -Answer and Explanation: The outer boundary of the cell is called the cell membrane, or plasma membrane. The cell membrane is one of the most important organelles in the cell, and all cells have a cell membrane. It not only separates the cell from the environment, but also regulates what comes in and out of the cell.

Detailed explanation-5: -The cell wall is a rigid layer that is found outside the cell membrane and surrounds the cell, providing structural support and protection.

There is 1 question to complete.