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AP Chapter 3 Flashcards

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84509413593 major components of a cellPlasma Cytoplasm Nucleus0
8450950056Plasma Membrane- Phospholipid bilayer (2 layers) - Form a fluid framework - Cholesterol - Helps stabilize the phospholipid molecules to prevent breakage1
8450950057Protein- Serve as identification tags (tissue typing) - Serve as receptors for molecules (hormones)2
8450952825Cytoplasm- Internal living material cells - Organelles - "little organs" - Small structures that make up most of the cytoplasm3
8450952826Ribosomes- "Protein factories" - Makes enzymes and proteins4
8450962422Endoplasmic Reticulum- Membranous network of connecting sacs and canals through cytoplasm a. Smooth - makes new membranes (lipids and carbohydrates) b. Rough - Receives and transports proteins (from ribosmes)5
8450962423Golgi Apparatus- "Chemical processing and packaging center" - Group of flattened sacs stacked on one another near nucleus Product: Mucus6
8450965512Mitochondria- "Power plants" - Composed of inner and outer membranes - Site of cellular respiration - Each contains one DNA molecules7
8450965513Lysosomes- "Digestive Bags" - Bubble of enzymes encased by a membrane8
8450968359Cilia- Short hair like extensions on the surface that help move substances over the surface of the cell9
8450968360Centrioles- A pair of hollow cylinders that function in a cell reproduction - Movement10
8450971862Flagella- Single projections extending from the cell surfaces - Sperm cell tail11
8451259352Nucleus- "Brain" - Control cell's function - Contains the genetic code12
8451272472Nucleoplasm- Special cytoplasm in the nucleus13
8451279246NucleolusPrograms the formation of ribosomes14
8451287132Chromatin- Made of DNA in the nucleus15
8451292576Regulation of life processesSurvival of species through reproduction of the individual Relationship of structure to function is apparent in number and type of organelles seen in different cells16
8451338829Passive Transport Processes- Requires no energy - Down a concentration level - High to low17
8451365580Diffusion- Substances scatter themselves evenly throughout an available space18
8451365581Osmosis- Diffusion of water19
8451368059Dialysis- Diffusion of solutes20
8451421390Filtration- Movement of water and solutes through a membrane because of a greater pushing force on one side of the membrane - Pushing force is called hydrostatic pressure21
8451467201Active Transport Processes- Requires energy - ATP - Low to high22
8451467202Ion Pumps- Protein structure in plasma membrane23
8451472693Phagocytosis- Traps solids by the cell membrane and brings it into the cell - Lysosomes destroy the solid Ex: White blood cells24
8451472694Pinocytosis- Traps fluids or dissolved substances25
8451475711Tonicity- The relative concentration of solutes in a cell26
8451475712Isotonic- Salt (NaCl) concentration equals solution (water) concentration27
8451480165Hypertonic- Cell contains more salt than solution - Water leaves - Cells break (crenate)28
8451598177Hypotonic- Solution contains more salt than cell - Water enters - Cells break (lyse)29
8451598178Mitosis- Processes of cell reproduction - One cell divides to become two cells - Tied closely to the production of proteins30
8451624909RNA- Ribnucleic acid - Found in cytoplasm31
8451624910DNA- Deoxyribonuleic acid - Makes up chromosomes - Double helix/stranded32
8451685638Compare DNA- Plays crucial role in protein synthesis Composition: Sugar: - Deoxyribose Phosphate Nitrogen bases: - Cytosine - guanine - Adenine - thymine33
8451689337Compare RNA- Transfers genetic info from the nucleus to the cytoplasm Composition Sugar: - Ribose Phosphate Nitrogen Bases: - Cytosine - guanine - Adenine - uracil34
8451800922Transcription- Double-ended DNA separates to form messenger RNA (mRNA) - Each strand of mRNA duplicates a particular gene (base-pair sequence) from a segment of DNA - mRNA molecules pass from the nucleus to the cytoplasm, where they direct protein synthesis in ribosomes and ER. - Takes place in the nucleus35
8451850585Translation- Involves synthesis of proteins by ribosome - Takes place in cytoplasm - Requires use of information contained in mRNA to direct the choice and sequencing of the building blocks called amino acids - As blocks of amino acids are assembled into proper sequence, a protein strand forms. - Specific shape allows molecule in perform specific function.36
8451969288Reproduction of cellBy division of the nucleus (mitosis) and the cytoplasm37
8451981807Interphase- Resting stage for the cell - DNA replication -Process by which each half of a DNA molecule becomes a whole molecule identical to the original DNA molecule - Precedes molecule38
8451981808Prophase- First stage - Chromatin granules become organized - Chromosomes (pair of linked chromatids) appear - Chromatids are held together by a beadlike structure called a centromere - Centrioles move away from each other and migrate to opposite poles. - Spindle fibers appear between centrioles - The nucleolus and nuclear envelope disappears and nuclear envelope disappears, freeing genetic material39
8451988774Metaphase- Second stage - Chromosomes align across the center of a cell - Spindle fibers attach themselves to each chromatid - Centrioles are at the opposite poles40
8452163628Anaphase- Third stage -Centromeres break apart - Separated chromatids are now called chromosomes once again - Chromosomes are pulled to opposite ends of the cell - A cleavage furrow begins to form. - Beginning to divide cell into two daughter cells41
8452187307Telophase- Final stage - Cell division is completed - Nuclei appear in daughter cells - Nuclear envelope and nuclei reform - Cytoplasm and organelles divide equally - Cell membrane forms around each daughter - Two new cells form and rapid cell growth occurs42
8452215297HP/HL =x43
8452218821LP diameter/x =HP diameter44
8452221889Area =3.14/(r)245
84583436144 kinds of tissues1. Epithelial 2. Connective 3. Muscle 4. Nervous46
8459704292Epithelial- Covers body and many of its parts - Form continuous sheets that contain blood vessels - Classified by shape and arrangement of cells47
8460814528Simple squamous epithelium- Single layer of very thin, irregularly shaped cells - Transport is special function ( such as absorption of oxygen into blood) - Located in alveoli of lungs, lining of blood and lymphatic vessels48
8458405651Stratified Squamous Epithelium- Several layers of closely packed cells - Protection is primary function - Against microbes49
8458401655Psuedostratified Epithelium- Single layer of tall cells that wedge together to appear as if there are two or more layers - Psuedo = stratified - Lines the trachea - Moves mucus along surface - Protection against dust or foreign particles50
8458398576Simple Cuboidal Epithelium- Form tubules specialized for secretory activity - Usually form clusters called glands51
8458398024Simple Columnar Epithelium- Single layer of tall, narrow cells - Contains mucus, producing goblet cells - Specialize in absorption - Surface layer of lining of stomach, intestines52
8458393211Stratified Transitional Epithelium- Up to 10 layers of roughly cuboidal-shaped cells that distort to squamous shape when stretched - Function - protection - Found in body areas subject to stretch and must be able to stretch (urinary bladder)53
8458389192Connective- Most abundant and widely distributed tissue in the body -Multiple types, appearances and functions - Relatively few cells in intercellular matrix, found between it's cells.54
8458384414Adipose (fat)- Lipid storage - Cells contain large fat compartments - Area under skin padding at various points - Protection, insulation, support, nutrient reserve55
8458384413Areolar- Glue that holds organs together - Loose arrangement of fibers and cells - Area between other tissues and organs56
8458384415Dense Fibrous- Consists of collagen fibers, compose tendons and bone marrow - Dense arrangement of collagen fiber bundles - Tendons, ligaments, fascia, scar tissue - Flexible but strong connection57
8458382039Bone- Support, protection and stores calcium - Hard, calcified matrix arranged in osteons - Skeleton58
8458382040Cartilage- Firm plastic gel - Hard but flexible matrix with imbedded chondrocytes - Part of nasal septum, area covering articular surfaces of bones - Firm but flexible support59
8458379153Blood- Liquid - Formation of blood - Blood vessels - Transportation60
8458379154Hematopoietic- Formation of blood and lymphatic cells (defense) - Liquid matrix with dense arrangement of blood cell-producing cells - Red bone marrow61
8458375003Muscle- Movement specialist of the body62
8458375004Skeletal- Voluntary - Striated - Long, threadlike cells with multiple nuclei and striations Location: - Muscles that attach to bones - Maintenance of posture - Movement of bones63
8458371311Cardiac- Forms walls of heart - heartbeat - Involuntary - Intercalated disks - Branching, interconnected cylinders with faint striations Location: - Wall of heart64
8458371312Smooth- Also called visceral - Involuntary - Threadlike cells with single nuclei and no striations - Movement of substances along respective tracts, changing diameter of vessels, movement of substances along ducts, changing of diameter of pupils and shape of lens, errection of hairs (goose bumps) Location - Walls of tubular viscera of digestive respiratory and genitourinary tracts - Walls of blood vessels and large lymphatic vessels, ducts of glands, intrinsic eye muscles ( iris and ciliry body ) arrector muscles of hairs65
8458371313Nervous- Provides rapid communication between body structures and for control or body functions - Ex. Spinal cord tissue - Consists of two cell types66
8458368993NeuronsConducting cells67
8458368994Glia (neuroglia)Supportive and connecting cells68

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