protozoa etc.......
Not with the naked eye, but with a microscope, yes.
No, the only cell that's visible with the naked eye is the egg cell. Other cells are microscopic, including e. coli.
No, the human egg cell is not visible to the naked eye as it is microscopic in size.
No, gas is typically invisible to the naked eye.
When you look at your blood with the naked eye all you see is red liquid. This is all anyone sees with the naked eye.
No, a leech is not a single-cell organism. Leeches are multicellular organisms belonging to the phylum Annelida. They are parasitic or predatory in nature and have a well-developed internal organ system.
The term "naked eye" means that there is nothing helping the eye to see. for example, if you are using glassess or a telescpoe, then you are not using the naked eye.
You have a 3rd eye
the Oocyte is the largest human cell and can be seen by the naked eye. more information on the Oocyte: http://en.wikipedia.org/wiki/Oocyte
Can you see a cheetah with your naked eye? Then it is not just made of one cell.
No, if you can see it with your naked eye it is single celled, with the exception of an egg cell, which are just barely visible.
single cell organism.having only one cell.they cannot be see wiyh our naked eye.