10/24 & 10/25 - 7th Grade Agenda Learning Objective: Learn about diffusion and osmosis Collect HW: Reading Guide Chap 3 Section 3 Class Work: Chap 3 Study Guide Who wants to be a Millionaire Chap 3 Video: Science in Action: Digestive System Class Reading p.104 – 119 HW: Reading & Note Taking p. 65 - 68 Reminder Chap 3 Test on 10/29 & 10/30 Reminder: HW: Cell Model due 11/5 & 11/6 (40 Points) Last day to turn in Late work for 1st Quarter 10/31 & 11/1

Reflection Write 3 facts about organelles.

What are cells and organelles made out of? Chemicals

What are chemicals made out of? ounds Comp_________ Can you give me examples of compounds? Water, Sugar, Alcohol, Carbon Dioxide

Compound When two or more elements comb_____ chemically, they form a compound ine

Elements Element is any substance that cannot be br_______ down into simpler substance. oken

Compound Carbohydrates, lipids, proteins and nucleic acids are important groups of organic com_____________ in living things pounds

Organic Compounds vs Inorganic Compounds What is the difference between organic and inorganic compounds? Organic compounds have the element carbon (and Hydrogen)

Carbohydrates ergy bon ars A carbohydrate is an en______ rich organic compound made up of car______, sugar and oxygen. Carbohydrates are used to fuel our body Sug____ and starches are examples of carbohydrates. ergy bon ars

Lipids = Fat rgy Lipids are ene______ rich organic compounds made of car______, hydrogen and oxygen Lipids are used by our ner____ cells Fats, oils and waxes are all lipids bon ve

Proteins Proteins are large organic molecules made of car_____, hydrogen, oxygen, nitrogen. Proteins are used to build mus_____, skin and bone cells Food that are high in protein include me___, eggs, fi_____, nuts and beans bon cle at sh

Enzymes An enzyme is a type of protein that speeds up a che______ reaction in a living thing. For example, enzymes in your saliva speed up the dige______ of food. mical stion

Nucleic Acids ructions Nucleic acids contain the inst________ that cells need to carry out all the functions of life. DNA and RNA are Nucleic Acids ructions

What are the organic compounds found in cells? Carboh______ Lip_____ Pro_____ Nuc______ Acid ydrates ids tein leic

Diffusion Diffusion is the main method by which small molecules m___ across the cell mem______. ove brane

What causes diffusion? Collisions of molecules

Osmosis Osmosis is the diffusion of wa_____ molecules through a selectively permeable mem_____ ter brane

Passive Transport ement out The mov________ of dissolved materials through a cell membrane with___ using cellular energy Diffusion and osmosis are examples of Passive Transport ement out

Active Transport The movement of materials through a cell membrane using cellular ene____ rgy

What is the difference between Passive Transport and Active Transport Don’t use energy Use energy