Warm-Up Describe how the allosteric inhibitor below will inhibit (deactivate) the enzyme.

Announcements Grades posted for exam are curved scores Unit Exam on Friday! (Everything from the second day of school until tomorrow is fair game) We will review Wednesday and Thursday

I have answers for week 2 and week 3 for you! CTQs week 3 - grading 10 minutes I have answers for week 2 and week 3 for you!

UNIT 1D Internal Membranes

Internal Membranes 1D UNIT Eukaryotic cells have internal compartments (organelles) lined with phospholipid bilayers like the plasma membrane.

common ancestor of all life UNIT 1D Internal Membranes Eukaryotic cells have internal compartments (organelles) lined with phospholipid bilayers like the plasma membrane. Prokaryotic cells do not have internal compartments. SMALL CELLS LARGE CELLS common ancestor of all life

They increase the surface area, allowing cells to be bigger. UNIT 1D Internal Membranes Eukaryotic cells have internal compartments (organelles) lined with phospholipid bilayers like the plasma membrane. Prokaryotic cells do not have internal compartments. How do membrane-bound organelles contribute to a cell’s size? Answer! They increase the surface area, allowing cells to be bigger.

Internal Membranes 1D UNIT Eukaryotic cells have internal compartments (organelles) lined with phospholipid bilayers like the plasma membrane. Prokaryotic cells do not have internal compartments. Eukaryotic cells are larger because the internal compartments increase surface area.

Internal Membranes 1D UNIT Eukaryotic cells have internal compartments (organelles) lined with phospholipid bilayers like the plasma membrane. Prokaryotic cells do not have internal compartments. What good is an enzyme if the substrates are in a different place?!?!?! Eukaryotic cells are larger because the internal compartments increase surface area. enzymes Internal compartments also help organize reactions. substrates

Internal Membranes 1D UNIT Eukaryotic cells have internal compartments (organelles) lined with phospholipid bilayers like the plasma membrane. Prokaryotic cells do not have internal compartments. Eukaryotic cells are larger because the internal compartments increase surface area. Internal compartments also help organize reactions. Lysosome enzymes are called “hydrolytic” because they cause hydrolysis. What is hydrolysis the opposite of? The lysosome is a membrane-bound organelle that contains digestive, metabolic enzymes to break up trash in the cell.

UNIT 1D CTQ #1 Explain how membrane-bound organelles contribute to a eukaryotic cell’s size.

UNIT 1D Active Transport ATP

Active Transport 1D UNIT To move a molecule against the concentration gradient (low to high), energy is needed. ATP is the energy molecule of the cell. What kind of biomolecule does this look like, and how is it different from what you’ve seen?

Active Transport 1D UNIT To move a molecule against the concentration gradient (low to high), energy is needed. ATP is the energy molecule of the cell. Moving with the concentration gradient does not require energy and is called passive transport.

UNIT 1D CTQ #2 Draw representations of a cell before and after the active transport of a molecule into or out of the cell. Indicate intracellular and extracellular numbers of the molecule in both the before and after scenarios. Include the essential components required for active transport.

Closure Explain two ways internal membranes facilitate complex cellular interactions. Predict the effects on the intracellular environment of removing the membrane around the lysosome.