1.Why can prokaryotic cells be smaller than eukaryotic cells and still carry on all of the functions of life?

Answer 1

Prokayotic cells mean a single-celled organism. Eukaryotic cells, however, can differentiate, ie: the cells can become specialized to perform specific functions in the organism. Such organisms tend to be big, so the process in an eukaryotic cell tends to be more complex.

Conversely, in prokaryotic cells, all the cell needs to bother about is respiration and replication to sustain it's unicellular body. They are also much smaller, and lack a membrane-bound nucleus. Instead, their DNA/RNA is just floating around in the cytoplasm. That's why bacteria can undergo transformation - bacterial recombination.

Answer 2

Prokaryotic cells do not have a nucleus or membrane-bound organelles. The nucleus and organelles take up a lot of space in eukaryotic cells.

Prokaryotic cells have to carry on life functions in order to survive. The processes that require membranes (such as respiration that usually occurs in the membranes of mitochondria) use the plasma membrane of a prokaryotic cell instead of the membrane of an organelle.

Answer 3

sure...
because prokaryotic cells also have nucleus...