Organelles Learning Goal 2

Organelles in the Nucleus Nuclear Envelope: A membrane that surrounds the nucleus and controls what can enter and leave Chromatin: DNA codes for proteins Nucleolus: Dark circle in the center of the nucleus Ribosomes (another organelle) are made here

Review What 3 organelles make up the nucleus? Which one is the DNA? Which one makes Ribosomes?

Organelles in the Cytoplasm Ribosomes Tiny little dots Make proteins Rough Endoplasmic Reticulum (ER) Noodles with ribosomes all over it Proteins made here Smooth ER Noodles without ribosomes Make lipids (fats, oils, waxes, cell membrane) Golgi Apparatus Stack of pancakes Packages proteins for storage or shipping

Review Which organelle makes proteins? Where do they make the proteins? Where do the proteins go to get packaged and shipped?

Organelles in the Cytoplasm Mitochondria Produces energy (from sugar) for the cell Chloroplasts Uses sunlight to make sugar in PLANT CELLS ONLY

Organelles: Cell Boundaries Cell Membrane Flexible barrier made up of a lipid bi-layer Controls what enters and exits the cell Cell Wall Supports, protects, and shapes PLANT CELLS ONLY More stiff than cell membrane

Review Which organelle makes sugar from sunlight? Which organelle makes energy from sugar? What organelles are only in plant cells? What is the difference between a cell membrane and a cell wall?