Cells Long, Long Ago. Before microscope, people thought that diseases were caused by curses and supernatural spirits Microscopes enabled scientists to view and study cells Anton VanLeeuwenhoek developed the 1st light microscope
Todays microscopes Today we have much more advanced microscopes Compound light microscope series of lenses to magnify objects SEM (Scanning Electron Microscope) scans the surface of cells
TEM (Transmission Electron Microscope) see structures inside the cell Cell Theory All organisms are composed of cells All cells come from other living cells Cells are the basic unit of structure and function Homeostasis
All organisms must maintain a balance regardless of internal and external conditions This task is controlled by the plasma membrane Plasma Membrane The plasma membrane serves as the
boundary between the cell and its environment Allows specific amount of nutrients to enter and allow waste to exit Characteristics of cell membrane Selectively permeable allows some
molecules to enter and keeps others out Like a screen door Plasma Membrane Made up of two layers of phospholipids Controls what
moves into and out of the cell Selectively permeable AKA: Lipid Bilayer, Fluid Mosaic, Cell Membrane Cell Wall Rigid structure
Located outside of plasma membrane Found in plant cells, fungi, some bacteria and protists Provides support and protection Composed of cellulose (carbohydrate) Two Basic Cell Types
Prokaryote Eukaryote Nucleus Control center of
the eukaryotic cell Contains directions to make proteins Chromatin strands of genetic material (DNA) Nucleolus Structure within the nucleus Produces ribosomes
Ribosomes The site of protein synthesis Found in the cytoplasm or on the Endoplasmic Reticulum
Cytoplasm Clear, gelatinous fluid inside the cell Helps suspend organelles Endoplasmic Reticulum Site of cellular chemical reactions Series of highly folded membranes
Rough Endoplasmic Reticulum have ribosomes attached Smooth Endoplasmic Reticulum does not have ribosomes attached Golgi Apparatus AKA: Golgi Body Flattened system of
tubular membranes Modifies and packages proteins Sort proteins to be sent to appropriate destination Vacuoles Temporary storage of materials Store food, enzymes,
other materials needed by the cell, and waste Plant cells usually have one large vacuole, animal cells usually contain many smaller vacuoles Lysosomes Contain
digestive enzymes that digest excess or worn out organelles, food particles, viruses and bacteria Chloroplasts Found in the cells of green plants
Organelle that captures light energy and produces food to store for later use Contains chlorophyll gives plants their green color Mitochondria Organelles that
transform energy for the cell Double membrane structure with highly folded inner membrane Cytoskeleton Support structure for the cell Composed of
microtubules and microfilaments Helps cell to maintain shape Cilia and Flagella Aid in locomotion or feeding May move the entire cell, or aid in movement of
substances across the cell surface Identify the Following Cellular Structures Plant and Animal Cells Animal Cells - Dont have a cell
wall - Contain centrioles - Contain many small vacuoles Plant Cells - Generally larger than animal cells - Have a cell wall - Contain
chloroplasts - Have one large central vacuole Critical Thinking : Why are plant and animal cells similar? Advantages of highly folded Membranes Folded membranes are an advantage to a cell because
Cell processes can be more efficient Membranes provide a larger surface area for cell process to take place Remember all cell membranes are made up of phospholipids and by controlling what goes in and out of the membrane they help the cell maintain homeostasis
Maintaining cerebral perfusion. Dobutrex & Levophed - used to improve cardiac output which will perfuse the brain more efficiently. Effectiveness is shown in the Cerebral Perfusion Pressure (CPP) which should be around 70 mm Hg. Low CPP indicates that the...
The trio is a contrasting minuet after which the first minuet is repeated. MINUET - TRIO - MINUET In a Classical Symphony, the 3rd Movement is often in Minuet & Trio form, sounding dance like and lively. Scherzo Scherzo literally...
Chaparral Chaparral is a type of temperate woodland biome with vegetation that includes broad leafed evergreen shrubs and is located in areas with hot, dry summers and mild, wet winters. Chaparrals are located in the middle latitudes, about 30° north...
Bubble Map Bubble maps are used for describing an object/topic, not to be confused with circle map Created with Kidspiration or Inspiration Double Bubble Map -is used for comparing and contrasting -helps students look closely and think deeply about two...
A tutorial on MS Project James Burns Must start with A list or tasks Or A Work Breakdown Structure Bring up MS Project Start in the Gantt View Enter task detail in the entry table to the left Subordinate tasks...
Ready to download the document? Go ahead and hit continue!