Question

Which of the following cell organelle is found in all plant cells, animal cells, and also in bacterial cells?

• A. chloroplast
• B. cell wall
• C. cell membrane
• D. nucleus

Answer 1

The correct option is C

cell membrane

The correct option is C

Explanation of the correct option:

1. A subcellular composition, which does one or more specific activities within a cell is known as an organelle.
2. Organelles are found in all the eukaryotic cells like plant and animal cells, they are generally absent in prokaryotes, like bacteria.
3. The cell membrane is the composition, which is found in all the eukaryotes and prokaryotes.
4. The prime function of a cell membrane is to protect the integrity of the interior cell, maintain the shape of the cell, and provide support.
5. Apart from this, the cell membrane also helps in cell signaling and communication between the cells.
6. It acts as a selectively permeable membrane, which allows only specific components to pass through it.

Explanation of the incorrect option:

Option A:

1. An organelle found only within the cells of plants and some of the algae is a chloroplast.
2. It is the location where the process of photosynthesis takes place.
3. The process by which energy from the Sun is transformed into chemical energy, which is further used by the cells of plants and some other species is photosynthesis.

Option B:

1. The cell wall is the component found only in the cells of plants and some other species like cyanobacteria.
2. It encircles the plasma membrane of the cells in plants and provides tensile strength and protection against osmotic and mechanical stress.

Option D:

1. The nucleus is the membrane-bound organelle found within the cells of all the eukaryotes like animals and plants.
2. It comprises genetic information, that is, it stores the DNA of the cell.
3. The prokaryotes like bacteria are devoid of the membrane-bound nucleus, their DNA comes in the form of a tangle called the nucleoid.

Final answer: Cell membrane is the organelle found in all the plant cells, animal cells, and bacterial cells.