Cell Structure and Organelles A2.2.4 - A2.2.6

Plasma Membrane

structural component made of lipids which controls the entry and exit of substances

Prokaryotic Cytoplasm

aqueous solution that fills the cell and doesn’t have any membrane compartments

DNA

universal genetic material storing the information needed for cell function

Cell Wall

structure which maintains cell shape and supports the plasma membrane because it’s thicker and stronger

Prokaryotic Nucleus

doesn’t have one ;)

Prokaryotic Organelle(s)

Ribosomes only

Prokaryotic Ribosomes are… 

smaller and 70S

What is the light area on the electron micrograph of a prokaryotic cell?

The nucleoid where naked DNA is stored

What causes cytoplasm to be darker in the electron micrograph of a prokaryotic cell?

Concentration of ribosomes and enzymes

Describe the structure of DNA in prokaryotes

naked DNA in a loop