Warm-Up What are cells? What do they do that is important for life? 1 Warm-Up
How are eukaryotes different than prokaryotes? Include cell complexity and size. Pass them to the front 2 Cells Structure and
Function Wake County Biology Curriculum current.com 3 Cell Theory 1.All living things are
composed of cells. 2.The cell is the most basic unit of life. 3.All cells come from preexisting cells. 4 Prokaryotes: Most primitive cell Bacteria: do not have a nuclei or other
membrane bound organelles; DNA is contained within the cytoplasm Some bacteria have a capsule which is a surface layer that helps them stick to each other and surfaces eapbiofield.wikispaces.com
5 Bacteria have a cell wall, cell membrane, ribosomes, and DNA in
the cytoplasm (no nucleus). 6 Bacteria, or prokaryotes, have no
membranebound organelles. 7 One organelle unique to prokaryotes is a molecule of DNA called a
plasmid. A plasmid is a circular molecule www.malebolge.net16.net 8
9 However, eukaryotes have many membranebound organelles. 10 Eukaryotes
Unicellular or multi-cellular organism that contains membrane-bound organelles and genetic material within a nucleus All organisms but bacteria Includes protists, fungi, animals, and plants
11 12 13 Eukaryotes Many of the
membrane-bound organelles following are found in 14 Parts of
the Cell Cell wall: A tough covering made of cellulose that adds structure and protection to a cell Located outside the
cell membrane In plants, bacteria, protists, and fungi only (not animals) biology.unm.edu 15
Parts of the Cell Cell membrane: Semi-permeable outer layer of all cells Lets selected substances into the cell, such as food and
water, and other substances out of the cell, such as wastes. All cells have a membrane. www.harweb.com Cell membrane
16 Phospholipid Bilayer Membrane 17 Parts of the Cell
Nucleus: Only in eukaryotes; Contains the DNA of the eukaryotic cell so is called the control center of the cell. Enclosed in a membrane. www.cartage.org.lb 18
Parts of the Cell Nucleus Contains DNA DNA is in the form of chromatin When cells begin mitosis, DNA coils into structures called chromosomes
DNA carries all the genes needed to make and control the cell 19 Parts of the Cell Nuclear envelope: membrane surrounding the nucleus that allows
important molecules in and out of the nucleus Chromatin: DNA that has unwound from chromosome form into long strings 20 Parts of the Cell
Ribosomes: small organelles that make proteins; Made of RNA; they get their information directly from the nucleus; some attached to the endoplasmic reticulum and some are free free ribosome www.bcscience.com
www.cartage.org.lb 21 Parts of the Cell Endoplasmic reticulum (ER): folded membrane (so only in eukaryotes) within the cell that transports proteins and other chemicals throughout the cell; surrounds the nucleus to get
information from DNA www.ccs.k12.in.us Rough ER has ribosomes attached that make proteins on the membrane. Smooth ER has no ribosomes so other
chemicals are produced on the membrane 22 Parts of the Cell Golgi body (apparatus):
folded membranes (so found only in eukaryotes) that package chemicals, including proteins, that the cell produces
and then ships outside the cell. 23 Parts of the Cell Mitochondria: organelles that use sugar to produce energy for the cell;
know as the power house of the cell Folded membranes hrsbstaff.ednet.ns.ca 24 The folded membranes increase surface
area on which chemical reactions may occur. 25 Parts of the Cell Chloroplast: organelles that contain chlorophyll and the process of photosynthesis
Chlorophyll: the green pigment that is necessary for photosynthesis biology.unm.edu Folded
membranes 26 Parts of the Cell Vacuole: membrane-bound organelle that contains water, wastes, and other fluids in cells; large vacuole in plant cell
Vacuole helps cell keep its shape Animal cell www.science-art.com
en.wikipedia.org Plant cell 27 Parts of the Cell Lysosome: membrane-bound organelles that contain digestive enzymes; digest food
particles and other substances publications.nigms.nih.gov 28 Parts of the Cell Cytoplasm: a fluid that is contained in a cell and surrounds the cells organelles
cytoplasm coolcell.blogspot.com 29 In multicellular organisms, cell structure is connected to function. Every cell is made
to do a specific job and has to be put together in a specific way to do that job. 30 Even though every cell in a multicellular organism has the exact same set of DNA, different cells are
structurally different to do different jobs. 31 Morphology: the study of form and function of living things. l
32 Different cells may have different numbers and arrangements of organelles depending on what types of jobs the cells are responsible for.
33 34 35 Hierarchy of Life Atoms make molecules
www.emc.maricopa.edu 36 Hierarchy of Life Molecules make compounds 37 Hierarchy of Life
Compounds to organelles 38 Hierarchy of Life Organelles to Cells 39
Hierarchy of Life Cells to tissues hrsbstaff.ednet.ns.ca 40 Hierarchy of Life
Tissues to organs www.robinsonlibrary.com 41 Organs to organs systems 42 biologyjunction.com
Hierarchy of Life Organ systems to organism www.mesto-votice.cz 43 Hierarchy of Life Organisms to populations
44 Hierarchy of Life Populations to communities pixdaus.com 45
Hierarchy of Life Communities to ecosystem (biome) schools.bcsd.com www.brazadv.com 46
Hierarchy of Life Ecosystem s to biosphere 47 image.wistatutor.com
48 Answer the review questions at the end of the notes. You may work within your groups.
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