![](http://uploads.cdn.yaclass.in/upload/pumpa/img_4.png)
PUMPA - SMART LEARNING
எங்கள் ஆசிரியர்களுடன் 1-ஆன்-1 ஆலோசனை நேரத்தைப் பெறுங்கள். டாப்பர் ஆவதற்கு நாங்கள் பயிற்சி அளிப்போம்
Book Free DemoDifferent types of cell size
Size of a cell varies across wide limits. Cell sizes can range from nanometers to micrometres. A smaller cell has more volume and surface area than a larger cell.
- As cell grows, increases of volume more quickly than its surface area. If a cell is enormous, its smaller surface area will not allow enough nutrients to enter or exit the cell soon.
- If we take the case of a white blood cell, a larger cell handles its nutrients efficiently with the help of more than one nuclei inside it.
- In the case of microvilli, a cell type in the small intestine, a larger cell has many folds and protrusions. These folding's increase the surface area available for transportation of the material.
Do you know?
The smallest cell found is a mycoplasma cell or PPLO (Pleuro Pneumonia Like Organisms, which is about \(0.1 micron\) in diameter.
![shutterstock_655197004.jpg](https://resources.cdn.yaclass.in/450a31d6-6e3e-4122-b4f7-10e19eca28ed/shutterstock655197004w500.jpg)
Mycoplasma
- The most elongate cells are the nerve cells measuring about a meter in length.
- The longest part of a neuron is the axon.
Neuron
The largest cell is eggs of the ostrich, which is about \(15 cm\) in diameter. ![ostrich-egg-2750297_1280.jpg](https://resources.cdn.yaclass.in/c911ba8d-7bc9-4f60-8f6c-87c11f4d402b/ostrichegg27502971280w500.jpg)
![ostrich-egg-2750297_1280.jpg](https://resources.cdn.yaclass.in/c911ba8d-7bc9-4f60-8f6c-87c11f4d402b/ostrichegg27502971280w500.jpg)
Eggs of the ostrich
Interesting facts about the cell in the human body - Ovum is the largest cell in the human body.
![shutterstock_1186589839.jpg](https://resources.cdn.yaclass.in/c6704563-8f42-4fce-abfc-52de75c80edb/shutterstock1186589839w500.jpg)
Human female ovum
- Sperm is the male gamete which is the smallest cell in the human body.
![Screenshot 2021-04-16 160712.png](https://resources.cdn.yaclass.in/f1d1803a-1cc9-4044-a504-b961b6960127/Screenshot20210416160712w500.png)
Structure of sperm
Reference:
https://upload.wikimedia.org/wikipedia/commons/b/b5/Neuron.svg
https://pixabay.com/photos/ostrich-egg-egg-large-egg-bouquet-2750297/
https://pixabay.com/photos/ostrich-egg-egg-large-egg-bouquet-2750297/