Objectives for Chapter 4

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Objectives for Chapter 4•1. Explain the process of diffusion•2. Describe how osmosis occurs•3. Compare passive transport with active transport•4. Explain how large particles get into and out of cells

Chapter 4:Vocabularyosmosis:diffusion:passive transportactive transportendocytosis:exocytosis:semipermeable:

Go to Chapter 4 in your online textbook and define these words

Vocabulary Defined• osmosis- the diffusion of water through a semipermeable membrane• diffusion- the movement of particles from regions of high

concentration to low concentration (no energy required)• semipermeable- only certain substances can pass through

Examples Osmosis/Diffusion

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=Nu4H6TjrrU2loM&tbnid=lQj3wtZIMzmGuM:&ved=0CAUQjRw&url=http://faculty.southwest.tn.edu/rburkett/Menbranes%20&%20cell%20function.htm&ei=1CI_UpiVHsTqyQHZroCIAg&bvm=bv.52434380,d.aWc&psig=AFQjCNFr88YNTFK7JBFNA8QeKnwUPyiwCQ&ust=1379955693705936

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=Nu4H6TjrrU2loM&tbnid=lQj3wtZIMzmGuM:&ved=0CAUQjRw&url=http://leavingbio.net/osmosis%20and%20diffusion.htm&ei=kyM_UoO5GqbmyQHK4YHADQ&bvm=bv.52434380,d.aWc&psig=AFQjCNFr88YNTFK7JBFNA8QeKnwUPyiwCQ&ust=1379955693705936

More Examples…

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=T0GKJEMc3RFaaM&tbnid=WEYy99uw9n9GfM:&ved=0CAUQjRw&url=http://idonthaveagoodblogaddress.wordpress.com/2011/07/28/they-like-to-move-it/&ei=KCM_UtOJFrDKyQHC14GIAw&bvm=bv.52434380,d.aWc&psig=AFQjCNFr88YNTFK7JBFNA8QeKnwUPyiwCQ&ust=1379955693705936

Examples of Osmosis•Red blood cells•Plant cells

Moving Small Particles•passive transport-movement of particles across a cell

membrane without the use of energy (move from high concentration to low concentration)• active transport-movement of particles to requires

energy from low concentration to high concentration•diffusion

Examples Passive/Active Transport

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=u1SqoaP5TF3_UM&tbnid=zk7F-4oWXXLd0M:&ved=0CAUQjRw&url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=243.0&ei=BiQ_UqrWIMOkyQHpvYCIDA&bvm=bv.52434380,d.aWc&psig=AFQjCNFr88YNTFK7JBFNA8QeKnwUPyiwCQ&ust=1379955693705936

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=zpFtt7BDL3g9HM&tbnid=9YSPKEI28THIqM:&ved=0CAUQjRw&url=http://depositphotos.com/10123654/stock-illustration-Active-and-Passive-transport.html&ei=gCQ_Up6yKfDlyAHMrYGIBA&bvm=bv.52434380,d.aWc&psig=AFQjCNG0gnmn4cQp4_8sqC-raEXqyUr7TQ&ust=1379956191373473

http://www.google.com/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&docid=isW9AnhWyxOFgM&tbnid=As3j8xyrQtO-RM:&ved=0CAUQjRw&url=http://163.16.28.248/bio/activelearner/05/ch5summary.html&ei=oyQ_Uo25NoWqyQHEqYDwCQ&bvm=bv.52434380,d.aWc&psig=AFQjCNG0gnmn4cQp4_8sqC-raEXqyUr7TQ&ust=1379956191373473

Moving Large Particles• endocytosis-active transport process by which a cell surrounds a large

particle such as a protein and encloses the particle in a vesicle to bring the particle “into” the cell• exocytosis- active transport process that the cell uses to enclose

waste materials that are inside the cell to release them out of the cell

Examples of Endo and Exo Cytosis

http://www.google.com/url?sa=i&source=images&cd=&cad=rja&docid=6DcYRPosc354IM&tbnid=IgVR_ioOxdadIM:&ved=&url=http://thescienceupdate.blogspot.com/2010_09_01_archive.html&ei=KSU_UsieMuKbygHIp4DICQ&psig=AFQjCNFp5ns3HvAsV7ku0HYz_9HoS6rilg&ust=1379956393862947

Worksheet• Fill in the worksheet

HomeworkWatch Brainpop for the following:(aacp; 123)1. diffusion2. passive and active transport

I will quiz you on these tomorrow!

Objectives•Describe photosynthesis and cellular respiration•Compare cellular respiration with fermentation

Vocabulary• photosynthesis• cellular respiration• fermentation• pigments

Photosynthesis and Respiration

Cellular respiration

• Chemical process that takes place in cells• Takes place in the mitochondria• Most of the energy released is used to maintain body temperature

C6H12O6 + 6O2 --> 6CO2 + 6H2O + energy

Fermentation• The breakdown of food to obtain energy without the use of oxygen• Examples: leg cramps (burning sensation)• One type: when muscles produce lactic acid when oxygen is unavailable• Bacteria, fungi, and yeast are other examples

Objectives for Chapter 4

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