Chapter 7 “A View of the Cell” p. 170 – 193 campus.queens.edu/faculty/jannr/cells/index.htm www.ndpteachers.org/perit/biology_image_galle... www.emc.maricopa.edu/.../BioBookAnimalTS.html types of organ tissue cells www.answers.com/topic/cell-organization This Powerpoint is hosted on www.worldofteaching.com Please visit for 100’s more free powerpoints
COMMON CELL TRAITS A cell is the smallest unit that is capable of performing life functions.
COMPARING CELLS The size & shape of a cell relates to its function. (job it does)
Prokaryotic Cells (proh KAYR ee yah tihk) cells without membrane-bound structures EX: bacteria pond scum
Eukaryotic Cells (yew KAYR ee yah tihk) cells with membrane-bound structures EX: animals, plants, fungi and protists
CELL WALL protects the cell gives shape is made of cellulose A cell wall is found in plants, algae, fungi, & most bacteria.
PLASMA MEMBRANE Outer covering, protective layer around ALL cells For cells with cell walls,the cell membrane is inside the cell wall Allows food, oxygen, & water into the cell & waste products out of the cell.
CYTOPLASM gelatin-like inside cell membrane constantly flows aka protoplasm
CYTOSKELETON scaffolding-like structure in cytoplasm helps the cell maintain or change its shape made of protein
NUCLEUS Directs all cell activities Contains instructions for everything the cell does These instructions are found on a hereditary material called DNA Usually the largest organelle
NUCLEAR MEMBRANE separates nucleus from cytoplasm controls movement of materials in & out of nucleus
NUCLEOLUS Aka “little nucleus” Found in the nucleus Ribosomes made here
CHROMATIN contains genetic code that controls cell made of DNA & proteins (deoxyribonucleic acid)
Cell Structure This Powerpoint is hosted on www.worldofteaching.com Please visit for 100’s more free powerpoints
CHLOROPLASTS Green organelles that make food found only in plant cells
CHLOROPHYLL A green pigment that gives leaves & stems their color Captures sunlight energy that is used to produce food called glucose Glucose is a type of sugar
MITOCHONDRIA Organelles that release energy from food This energy is released by breaking down food into carbon dioxide AKA the powerhouse b/c they release energy from food Some muscle cells have 20,000 mitochondria
RIBOSOMES Make proteins Float freely or attached to the endoplasmic reticulum (ER) Ribosomes are made in the nucleolus
ENDOPLASMIC RETICULUM A series of folded membranes that move materials (proteins) around in a cell like a conveyor belt Smooth ER – ribosomes not attached to ER Rough ER – ribosomes attached to ER
GOLGI BODIES (GAWL jee) Stacked flattened membranes Sort and package proteins
VACUOLES Temporary storage spaces Store food, water, waste
LYSOSOMES (LI suh sohmz) The word "lysosome" is Latin for "kill body." The purpose of the lysosome is to digest things. They might be used to digest food or break down the cell when it dies. Break down food molecules, cell wastes & worn out cell parts
FROM CELL TO ORGANISM Tissue Group of cells working together Group of tissues working together Organ System Group of organs working together Organism Any living thing made of 1 or more cells
NAME THE ORGANELLE a. Nucleus c. Golgi body b. Chloroplast d. Mitochondria
1- Nucleus 2- Chromosomes 7- ER 3- Mitochondria 5- Chloroplasts 8- Cell Membrane 4- Ribosomes 6- Vacuoles
Scientific Drawings Line drawings No shading Left of center smooth continuous lines (simple) No shading Left of center Labels on right Ruler lines Print Micro or macro http://awbionotes.files.wordpress.com/2012/07/2-3-1.png Liver Cell (1000x)
Cottonwood Poplar Leaf (text p 560) http://cnx.org/content/m47405/latest/Figure_30_04_01.jpg Title Scale or magnification Cottonwood Leaf(Actual size)
Field of View (p 1098) Micrometer slide Ruler http://i01.i.aliimg.com/wsphoto/v0/1212502279/0-1mm-Stage-micrometer-microscope-slide-font-b-calibration-b-font-object-micro-fine-font-b.jpg
Magnification (p1098) Eyepiece x objective lens 40x 100x 400x http://www.mr-damon.com/experiments/1ib_bio/micrometer_scope_slide3.jpg
Wet Mount