GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following can be found in the cytoplasm and on the surface of the endoplasmic reticulum?
A
mitochondria
B
centrosomes
C
ribosomes
D
centrioles
Explanation: 

Detailed explanation-1: -Ribosomes are the smallest cell organelles which can be seen only through an electron microscope. They are found in both prokaryotic as well as eukaryotic cells. Ribosomes are dense, round bodies which occur freely in the cytoplasm and may remain attached to the surface of the endoplasmic reticulum.

Detailed explanation-2: -It is mainly composed of water, salts, and proteins. In eukaryotic cells, the cytoplasm includes all of the material inside the cell and outside of the nucleus. All of the organelles in eukaryotic cells, such as the nucleus, endoplasmic reticulum, and mitochondria, are located in the cytoplasm.

Detailed explanation-3: -Ribosomes can be found floating in the cytoplasm. They are also found attached to the surface of Endoplasmic Reticulum-making it “rough".

Detailed explanation-4: -The nucleus (plural, nuclei) houses the cell’s genetic material, or DNA, and is also the site of synthesis for ribosomes, the cellular machines that assemble proteins.

Detailed explanation-5: -The rough endoplasmic reticulum (RER) has ribosomes on its surface. Ribosomes help in the synthesis of proteins. The smooth endoplasmic reticulum (SER) does not have ribosomes on its surface. The SER helps in the synthesis of lipids.

There is 1 question to complete.