Question

Which of the following cell organelle is known as the protein factory of the cell?

• A. Cytoplasm
• B. Ribosomes
• C. Mitochondria
• D. Endoplasmic Reticulum

Answer 1

The correct option is B

Ribosomes

The correct option is B.

The explanation for the correct option:

1. Ribosomes are often known as ribonucleoproteins.
2. Every ribosome is comprised of two subunits, one bigger and one smaller, each with its own distinct form.
3. They are produced within the nucleolus of a nucleus.
4. They are unique unlike many organelles such that they lack a protective membrane.
5. These are said to be the center of protein synthesis and are thus characterized as the cell's protein factories.

The explanation for incorrect options:

Option A:

1. The viscous fluid that surrounds a cell from within is known as cytoplasm.
2. Water, minerals, and organic molecules make up its composition. It provides a medium for chemical reactions.
3. The cytosol of the cell is where all of the activities for cell cycle progression, development, and division take place.

Option C:

1. A mitochondrial organelle is the double membraned organelle that serves as the cell's powerhouse.
2. It is always present in animal cells and plant cells both.
3. It contributes mostly to the synthesis of ATP.

Option D:

1. An Endoplasmic Reticulum seems to be a structure of membranous tubules found within eukaryotic cells.
2. It is classified into two types: smooth and rough.
3. The endoplasmic reticulum serves a range of purposes within the cell, which includes calcium accumulation, protein synthesis, and lipogenesis.

Final answer: Ribosomes are known as the protein factory of the cell.