OBJECTIVE LIFE SCIENCE
CELL BIOLOGY
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
Cytoplasm
|
|
Nucleus
|
|
mitochondria
|
|
Ribosomes
|
|
Endoplasmic reticulum
|
Detailed explanation-1: -Ribosomes are non-membrane-bound cell structures that serve as protein synthesis sites. They have nearly equal amounts of protein and a type of ribonucleic acid known as rRNA (ribosomal RNA). Some ribosomes associate with the endoplasmic reticulum, while others float freely in the cytoplasm.
Detailed explanation-2: -Protein synthesis is extremely important to all cells, and therefore a large number of ribosomes-sometimes hundreds or even thousands-can be found throughout a cell. Ribosomes float freely in the cytoplasm or sometimes bind to another organelle called the endoplasmic reticulum.
Detailed explanation-3: -The site of protein synthesis in the cell are ribosomes.
Detailed explanation-4: -The free-ribosomes synthesize soluble cytoplasmic proteins, peripheral membrane proteins, mitochondrial proteins, chloroplast proteins, peroxisomal and nuclear proteins, etc. In short, free-ribosomes are responsible for the production of all the proteins that are found within the cell and are present in the cytosol.
Detailed explanation-5: -Ribosomes are organelles composed of both RNA and proteins that carry out the process of protein synthesis. Ribosomes either float freely in the cytoplasm or attach to the endoplasmic reticulum; the location of a ribosome determines how the protein it synthesizes will be used.