Cell_Parts_key - The Parts of Cells Student Worksheet Table...

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Unformatted text preview: The Parts of Cells Student Worksheet Table 1. Parts involved in Protein Synthesis found in almost ALL eukaryotes Organelle1 Where Function # Membrane Layers Parts Nucleus Connected to rER by endomembrane system Free in cytosol, bound to rER cell control, genetic storage, mRNA synthesis 2: nuclear envelope with pores; shape maintained by nuclear lamina 0 chromatin, nucleolus; sometimes chromosomes proteins and RNA Ribosome1 protein synthesis; translates mRNA to proteins Rough endoplasmic reticulum (rER) Golgi apparatus connects to nuclear membrane at one end, may vesiculate into sER or vesicles at other end Makes & exports plasma membrane, folds & assists protein assembly, exports proteins a system of "factories" that synthesizes many carbohydrates; also finishes rER products, adds signalling proteins to vesicles 1 cisternae and their lumena, the cisternal spaces 1 Faces rER at cis end cisternae and their lumena, the cisternal spaces 1 ribosomes are not membrane-bound, and thus are not organelles by many people's definition The Parts of Cells Student Worksheet Table 2. Organelles NOT involved in Protein Synthesis, but still found in almost ALL eukaryotic cells Organelle Where Function # Membrane Layers Parts Mitochondria cytosol cellular respiration 2 with intermembrane space between 1 Inner membrane forms folds (cristae) enclosing the matrix None Smooth endoplasmic reticulum (sER) Vacuole Outfolding of rER, between rER and plasma membrane cytosol lipid synthesis, detoxification Storage (many different kinds), food & water transport / removal 1 none Lysozome cytosol intracellular digestion for 3 reasons 1 & many H+ pumps (keeps a) digest food interior acidic) b) recycle damaged organelles c) destroy cell (cell death) None, but contains... Hydrolytic enzymes Peroxisome cytosol Converts H2O2 to water; lipid digestion 1 H2O2 (hydrogen peroxide, a powerful toxin) Table 3. Organelle found only in Plant cells Organelle Where Function # Membrane Layers Who Parts Chloroplast cytosol photosynthesis 2 with intermembrane space between plants and algae stacks of single membrane thylakoids The Parts of Cells Student Worksheet Table 4. Parts of Cells that are not Organelles Part cell membrane Kinds/Components integral proteins membrane carbohydrates membrane lipids Function many; transport proteins help move ions or molecules in/out, etc. cell-cell recognition Fluidity and permeability of membranne Intercellular communication intercell communication Intercellular connection Rivets cells together supports cell shape, organelle and chromosome movement, beating of cilia and flagella Cell shape, movement, cytokinesis Who Nearly everybody Nearly everybody nearly everybody plants animals animals animals eukaryotes Parts Hydrophobic core; hydrophilic surfaces branched oligosaccharides and glycolipids Cholesterol inhumans, antifreeze lipids in plants Hole between cell walls/membranes; unites cytosol of adjacent cells unites cytosol and cell membranes Transmembrane proteins Tranmembrane & other proteins a hollow tube made of dimers called alpha & beta tubulin intercellular junctions plasmodesmata gap junctions tight junctions desmosomes cytoskeleton microtubules microfilaments eukaryotes two twisted chains of actin intermediate filaments Cell shape, extracellular matrix, support eukaryotes Supercoiled fibrous proteins ...
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This note was uploaded on 04/29/2008 for the course BIO 102 taught by Professor Carlin during the Spring '08 term at Gustavus.

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