Presentation on theme: "Standard: S7L2 Students will describe the structure and function of cells, tissues, organs, and organ systems."— Presentation transcript:
1 Standard: S7L2Students will describe the structure and function of cells, tissues, organs, and organ systems.
2 The Necessities of Life S7L2(a) Every organism has the same basic needsWaterAirFoodShelter (a place to live)
3 Putting it all together Almost all of the life processes of a cell involve Proteins.Proteins are made of amino acidsChemical building blocks used to make cells.
4 Energy Carbohydrates Simple carbohydrates Complex carbohydrates Made of one sugar molecule or a few linked togetherExample: table sugarEnergyComplex carbohydratesHundreds of sugar molecules linked together.Example: starches
5 What do we do for the cell? Lipids: a fat moleculeCan not mix with waterStore energyNucleic Acids:Blueprints of lifeInformation to make proteins
6 Endocytosis vs. Exocytosis S7L2(a): Explain that cells take in nutrients in order to grow and divide and to make needed materials.Why do cells take in nutrients?Cells take in nutrients in order to grow.Endocytosis vs. Exocytosis
7 Endocytosis is a general term for a group of processes that bring large particles, small molecules, and even small cells into the eukaryotic cell.
8 Exocytosis is the process by which materials packaged in vesicles are secreted or exited from a cell when the vesicle membrane fuses with the plasma membrane.
10 How and why do cells grow and divide? S7L2(a): Explain that cells take in nutrients in order to grow and divide and to make needed materials.How and why do cells grow and divide?
11 S7L2(c): explain that cells are organized into tissues, tissues into organs, organs into organ systems, and systems into organisms.tissueorgansCellsOrgan systemorganisms
12 Why do cells need oxygen? S7L2(d): explain that tissues, organs, and organ systems serve the needs cells have for oxygen, food, and waste removal.Why do cells need oxygen?Cells need oxygen to go through the following processes: respiration, diffusion, and osmosis.
13 RespirationPrimary function is to obtain oxygen for use by body's cells & eliminate carbon dioxide that cells producePathway of air: nasal cavities (or oral cavity) > pharynx > trachea > primary bronchi (right & left) > secondary bronchi > tertiary bronchi > bronchioles > alveoli (site of gas exchange)the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation. A metabolic process.
14 Respiration Fun Facts: the metabolic processes whereby certain organisms obtain energy from organic moelcules; processes that take place in the cells and tissues during which energy is released and carbon dioxide is produced and absorbed by the blood to be transported to the lungs.
15 DiffusionA type of passive transport (non-energy requiring) involving the movement of small molecules from an area where they are highly concentrated to an area where they are less concentrated. Diffusion is spontaneous and automatic.
16 Osmosisthe tendency of a fluid, usually water, to pass through a semipermeable membrane into a solution where the solvent concentration is higher, thus equalizing the concentrations of materials on either side of the membrane.
17 Organ Systems Integumentary Sysytem Muscular System Skin, hair, nails ProtectsMuscular SystemMusclesMovementWorks with the skeletal system.
18 Organ Systems Skeletal System Cardiovascular System Bones Frame and supportCardiovascular SystemHeartPumps bloodWorks with circulatory system
19 Organ Systems Respiratory System LungsAbsorb oxygen and release carbon dioxide