6th+Period+Unit+2+Kathleen+and+Katy

**Unit 2 Cells and Organs**
by Kathleen Hohweiler and Katy Barr

S7L2: Students will discribe the structure and function of cells, tissues, organs, and organ systems. a. explain that cells take in nutrients in order to gorw and divide to make needed materials. b. relate cell structures. (cell membrane, nucleus, cytoplasm, chloroplasts, mitochondria) to basic cell functions c. explain that cells are organized into tissues, tissues into organs, organs into organ systems and organ systems into organisms. d. explain that tissues, organs, and organ systems serve the needs cells have for oxygen, food, and waste removal. e. explain the role of the major organ systems in the body.

a. explain that cells take in nutirents in order to grow and divide to make needed materials.

media type="custom" key="16169714" Diffusion Diffusion is when particles move to an area that is less crowded. Where something is most crowded is called concentration. Particles will move until cell has reached equilibrium. Higher concentration-> more partciles. Lower concentration-> less particles. Osmosis Osmosis is the way water moves in and out of the cell. Hypertonic Hypertonic is when concentration of dissolved particles is greater outside than inside. Hypotonic Hypotonic is when concentration of dissolved particles is greater inside than outside. Isotonic Isotonic is when the concentration of dissolved particles is the same inside and outside. Faciliated Diffusion Faciliated Diffusion allows some molecules to enter or leave througn protein channels. This does not require energy. Photosynthesis Photosynthesis is when plants capture energy from the sun and make it into food. The food they make gives them energy. Plants use energy captured by Chlorophyll to change carbon dioxide and water into food, then the food is in the form of the sugar called glucose. Glucose is a carbohydrate.

b. Relate cell structures. (cell membrane, nucleus, cytoplasm, chloroplasts, mitochondria) to basic cell functions. media type="custom" key="16166558" c. Explain that cells are organized into tissues, tissues into organs, organs into organ systems and organ systems into organisms. media type="custom" key="16171902" Cells are the most basic unit of life. With out thall living things would not exist. Cells that are made to have the same function, make up tissues. Many layers of tissues with the same job create organs. Organs that help each other create and organ systems. Many organ systems create an organism.

d. Explain that tissues, organs, and organ systems serve the needs cells have for oxygen, food, and waste removal.

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Enocytosis

When the Cell Membrane forms a fold or pocket called a vesicle around the particle. The pocket then breaks loose from the outer layer of the cell membrane and pulls the material in.

Exocytosis

Exocytosis is when the vesicle carries particles to the Cell Membrane, then they are released from the cell.

Passive Transport

Passive Transport does not use energy to transport materials across the cell.

Selectively Permeable

Selectively Permeable means that some materials pass through and others don't.

Faciliated Diffusion

Faciliated Diffusion allows some molecules to enter or leave througn protein channels. This does not require energy. Active Transport Allows particles to pass through the cell using energy.

e. Explain the role of the major organ systems in the body

There are many types of organs that make the human body work. As you know now,cells make up tissues, tissues make up organs, and organs make up organ systems. Every part of your body is part of an organ system.

Your skin is the largest organ system in your body. It is called the Integumentary system. It includes your skin, nails, and hair. It helps protects your inner organs and prevents diseases. The next organ system is the lymphatic system. The lymphatic system protects your body against disease and absorbs lymph, a milky substance that is made up of fats and salts. The skeletal system is made up of bones and joints, it's job is to protect your inner organs and help your body move. The muscular system works with your skeletel system to help your body move and stay together. It also pretects your organs. Your endocrine system controls pea sized organs that control your hormones, adrenaline, and growth. The respitratory system makes you breath, it works with your circulatory system to distrubute oxygen to the rest of the body. The circulatory system circulates blood through out the body. Your Digestive system digests food that you eat and helps make it into nutrients that your body needs to survive. Lastly, your excretory system removes waste after it goes through the digestive system.

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Bibliography: //Endocytosis//. Photograph. //Life of Plants//. Web. 2 May 2012. [|www.lifeofplant.blogspot.com/2011/04]. //Excotyosis//. Photograph. //Life of Plant Cells//. Web. 3 May 2012. . Holt, Rinehart, Winston. //Georgia Holt Science and Technology// //In and Out of Cells//. Photograph. Web. 3 May 2012. [|www.emc.maricopia.edu]. Prezi." //Prezi.com//. Web. 01 May 2012. []. //Science Coach Book. print// Voki Home." //Voki Home//. Web. 01 May 2012. [].