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Unit 1

Function of centrosomes contains tubulins which are used for growth of miotic spindle (cell division) mitosis and micro tubule formation (cilia, flagella)
What are the functions of membrane proteins? Ion channel:substance move across cell w/o channel (protein fascilitatedTransporter: Glucose, protein mechanismReceptor: help substances combineEnzymes: breakdown protein
Unicellular consist of a single cell, invisible w/o microscope *except amoebaexp: bacteria, protozoa, unicellular algae, unicellular fungi, or yeast
Multicellular Human organism, plant or animal. consisting of more than one cell, visible to the naked eye, and differentiated cells that perform specialized functions
Cell structures Cell membrane, cytoplasm, fluid mosaic, centrosome, ribosome, ER (smooth, rough), Gogli complex, lysosome, mitochondria, nucleus
cell membrane and its function *has phsylogical limits* a flexible outer surface of cell, forms a barrier from the outside the cell to the inside*seperates internal from external enviroment
cytoplasm and it's function Composed of cellular contents located between plasma membrane and nucleus Centerfuge, seperate components of the cell
Fluid Mosaic model and it's function Plasma membrane ever-moving sea of fluid 1.lipids that contain a mosaic of different 2. proteins. Some float free; others are anchored.
Lipids permit passage of lipid soluable molecules act as a barrier entry & exit located in mosaic
Lipid bilayers functions, location, and composition 2 of 3 types of lipids: phospolipids 75%, Cholesterol 20%, & glycolipids 5%. Arragement due to amphatic moleculars
Amphatic moleculars Polar (sphere, charge, hydrophilic) Non Polar (tails, no charge,hydrophobic)
2 types of protein in the bilayer Integral: inside lipid membrane; firmly embedded in transmembrane span entire bilayer peripheral: around surface in & out
Cilia & functions movement of the cell "hair like"
Layers of the GI tract
Identify locations & functions of the GI organs
What are the names and functions of the digestive hormones SECRETIN,GASTRIN
What are the names and functions of the digestive enzymes?
What are the names and functions of the digestive chemicals?
Describe the digestive system process.
Describe the process of transcription. happens in nucleous base triplates in DNA serve as template to copy info into codons.1. gene copied into mRNA 2. many protiens can be made due to the splicing of mRNA
Describe the process of translation. (Letter->amino acid->protein)Takes place in ribosomes in cytoplasm (free ribo) tRNA matches to mRNA.
Describe the structure and function of DNA.
Which bases pair together in DNA? A-U, U-A, G-C, C-G
What bases pair together in RNA? A-T,T-A,G-C,C-G
Functions of membrane protein Ion channel: move across cell W/O a channel(active transport) Transporter: Glucose protein mechanism Receptor:important in substances combine Enzyme:breakdown protein
Methods used to move substances across the cell membrane. Active transport, Passive transport, Vesicular transport
Created by: 659316083



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