1. Name any two unicellular organisms.
2. On what factors do shape and size of cells depends?
3. Who discovered cell and when?
4. Which cell organelle controls the various activities of the cell?
5. What function do pores present on the nuclear membrane perform?
6. What is the undefined nuclear region found in Prokaryotes known as?
7. What are the two types of endoplasmic reticulum?

Dear student, 1) Some examples of unicellular organism are amoeba and paramecium. 2) The shape and size of cell depends on the function it performs. For example, RBCs are designed in such a way that they have to carry oxygen in the bound form with haemoglobin. Nucleus occupies adequate space in the cell. So, RBCs do not have nucleus in order to accommodate more haemoglobin to carry oxygen. Kindly post other question in different thread. Regards