Eukaryotic Cells

• Plasma membranes have proteins and cholesterol embedded in them. The proteins can act as receptors. This means that the cell can respond to its external environment.
• Mitochondria are oval-shaped, double-membrane organelles. Each membrane is a phospholipid bilayer embedded with proteins. The inner layer has folds called cristae. The area surrounded by the folds is called the mitochondrial matrix.
• mitochondria:

  Oval-shaped

  Double membrane organelles

  Have their own ribosomes and DNA
• mitochondrion is the site of atp production
• The nuclear envelope is a double-membrane structure. It has pores that control the passage of ions, molecules and RNA between the nucleoplasm and cytoplasm.
• Processing and folding proteins takes place in the RER
• Making and processing lipids takes place in the SER