Picture or Paragraph Quiz Picture You may draw

Picture or Paragraph Quiz Picture: You may draw two pictures that describe the processes of photosynthesis and cellular respiration. You must have a picture for each process and they must be labeled. OR Paragraph: You may write two paragraphs describing the processes of photosynthesis and cellular respiration. Make sure that your paragraphs specify which process you are writing about. Make sure that you include in your pictures or paragraphs the materials that are needed to start each process and the products that are a result of each process. Also make sure that you state where the processes take place.

Cells Capture and Release Energy Review Ingredients/ Reactants Photosynthesis light energy the process by which plants capture light energy from the sun and convert it into glucose carbon dioxide Water CHLOROPLAST Cellular Respiration the process in which cells use oxygen to release energy stored in sugars glucose oxygen Used By PLANTS CELLS and SOME PROTISTS Product glucose oxygen PLANTS AND chemical energy ANIMAL carbon dioxide CELLS water MITOCHONDRIA Fermentation – process by which cells release energy without oxygen (occurs in the CYTOPLASM)

How Do Materials Move Across A Cell’s Membrane?

membrane *diffusion Passive & osmosis are types of passive Transport transport *the cell is trying to maintain Homeostasis: stable internal environment (reaching equilibrium) Brain Pop - Passive Transport

Diffusion - is the movement of particles from an area of higher concentration to an area of lower concentration Molecules spread out or move from areas where there are many of them to areas where there are fewer of them in order to reach equilibrium Diffusion Animation

Diffusion Cells use diffusion to carry out important life functions Oxygen needed for cellular respiration enters cells by diffusion Carbon dioxide produced by cellular respiration leaves cells by diffusion Brain Pop - Diffusion

Osmosis - the diffusion of water through a membrane from a higher to a lower concentration • In a cell, water always moves to reach an equal concentration on both sides of the membrane • Osmosis Video Clip

Active Transport Active transport: the process of using energy to move materials through a membrane from a lower to a higher concentration Cellular energy endocytosis & exocytosis are types of active transport Carrier proteinsin and out of the cell that (used to move particles are too large to go through the cell membrane) Brain Cellular Popenergy - Active Transport

Endocytosis (Enter) - is a process by which a cell surrounds and takes in material from its environment

Exocytosis (Exit) - is the expulsion or secretion of materials from a cell

How Do Materials Move Across A Cell’s Membranes? Passive Transport (No Energy) Diffusion Osmosis Active Transport (Energy) Endocytosis Exocytosis