Looking Ahead• Today Obj. 13, 24 (14 and 15)• Tomorrow Obj 12, 16, 17, 19• Wed – Review • Thursday – Review• Friday - Test

Obj. 13 – How proteins are assembled and ‘shuttled

• RNA copy of DNA (gene)• RNA leaves nucleus and goes to ribosome• Ribosome translated RNA into protein (RNA ‘codes’

for protein) using amino acid monomers• IF protein is used in the cell, we’re done

Obj. 13 – How proteins are assembled and ‘shuttled

• IF protein is for use outside the cell…• Ribosome attaches to Rough ER• Protein is put together inside Rough ER• Vesicle detaches from Rough ER and travels to

Golgi Apparatus via..?• ‘Assembly’ is completed at Golgi and vesicle

detaches with finished protein and travels to cell membrane

• Vesicle merges with cell membrane and protein is released, or transported through membrane protein

Obj. 24 – What if an organelle was missing?Organelle “Function” What loss of function would “look like”

Nucleus

Vacuole

Vesicle

Lysosome

Microfilaments

Microtubules

Ribosomes

Rough ER

Smooth ER

Golgi Apparatus

Chloroplast

Mitochondrion

Cell Membrane

DNA codes for RNA/protein to regulate cell, make structures, etc.

DNA would still be present, just more difficult to control what gets made when because DNA/RNA is in cytoplasm with ribosomes

Homework• Written answer to Obj. 14 and 15