GENERAL HISTOLOGY

INTRODUCTION

CELL STRUCTURE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Some ribosomes float free in the cytoplasm, while other ribosomes are attached to which of the following organelles?
A
cell (plasma) membrane
B
Golgi apparatus
C
mitochondrion
D
endoplasmic reticulum
Explanation: 

Detailed explanation-1: -Eukaryotic ribosomes may be either free, meaning that they are floating around in the cytoplasm, or bound, meaning that they are attached to the endoplasmic reticulum or the outside of the nuclear envelope.

Detailed explanation-2: -Ribosomes are special because they are found in both prokaryotes and eukaryotes. While a structure such as a nucleus is only found in eukaryotes, every cell needs ribosomes to manufacture proteins. Since there are no membrane-bound organelles in prokaryotes, the ribosomes float free in the cytosol.

Detailed explanation-3: -Ribosomes float freely in the cytoplasm or sometimes bind to another organelle called the endoplasmic reticulum. Mitochondria are self-replicating organelles that occur in various numbers, shapes, and sizes in the cytoplasm of all eukaryotic cells.

Detailed explanation-4: -Detached, or free, ribosomes float in the cell’s interior fluid solution called cytosol. Some are individuals while others clump together in groups called polyribosomes. Free ribosomes translate mRNA for proteins which will stay in the cytosol.

Detailed explanation-5: -Both eukaryotic and prokaryotic cells have ribosomes freely floating in their cytoplasms, known as free ribosomes.

There is 1 question to complete.