You have earlier observed cells in an onion peel and/or human cheek cells under the microscope. Let us recollect their structure. The onion cell which is a typical plant cell, has a distinct ______ as its outer boundary and just within it is the ______.
The cells of the human cheek have an ______ as the delimiting structure of the cell.
Inside each cell is a dense membrane bound structure called ______.
This nucleus contains the ______ which in turn contain the ______.
Cells that have membrane bound nuclei are called ______ whereas cells that lack a membrane bound nucleus are ______.
In both prokaryotic and eukaryotic cells, a ______ matrix called ______ occupies the volume of the cell.
The ______ is the main arena of cellular activities in both the plant and animal cells.
Various chemical reactions occur in it to keep the cell in the ______.
Besides the nucleus, the eukaryotic cells have other membrane bound distinct structures called organelles like the ______.
The ______ cells lack such membrane bound organelles.