BSC 160 1nd Edition Lecture 7 Outline of Last Lecture 1. Hydrogen Bonds2. Oxidation/Reduction3. Organic Compounds4. MacromoleculesOutline of Current Lecture 1. Organic Compounds Continued…2. Cell structure & Organization3. Prokaryotic Cells & FunctionsCurrent LectureFunctional Groups of Organic Compounds- Accessory molecules that bind to organic compounds- Confer unique reactive properties on the whole moleculeStereochemistry- Handedness: Mirror images in shapeMacromolecules: Carbs, Nucleotides, Proteins, LipidsChapter 3- Cell Structure and OrganizationPlasma membrane- Sense & Respond. - Separate internal from external compartment. Barrier & gatewayProkaryotic Cell Types: Bacteria & ArchaeaPlants, animals, fungiEukaryotic Cell Type: Eucarya*Regardless of cell type, macromolecules make up all cellsRibosome: Made up of nucleic acids & proteinsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.Material of heredity: Nucleic Acid is DNA, regardless of cell type.- Table 22.1 in book Cell- Smallest unit capable of sustaining life. DNAtranscriptionRNAtranslationProtein- Tendency to be spherical - All have Cytoplasm- Surrounded by membraneProkaryotic cell has 3 parts…1.) External- Appendages Flagella-movement Pili Fimbriae-Glycoalyx- Outside surrounding portion Capsule, slime layer2.) Cell envelope- Cell wall & cell membrane3.) Internal- Cytoplasmic matrix Ribosomes Inclusions nucleoid/chromosome Actin cytoskeleton EndosporeMembranes- Phospholipids & Proteins. Functions: Selective barrier & gateway- Transporto Facilitated diffusion- High concentration Low concentration. No energy expended, diffusion only works by being carried by protein (mostly sugar)o Group translocation- Proteins bind to target, transport in & modifiedo Active transport- Low concentration High concentration. Takes energy- Enzymatic activity- Membrane synthesis- Macromolecular export- Cell wall assembly- Energy generation- Phospholipids easily disassociate bc of water.- Proteins are integral- Can interact on either side of membraneo Polar amino acids with polar amino acids, nonpolar amino acids with nonpolar amino acidso Hydrophobic- Scared of watero Hydrophilic- Moves toward waterMembranesBenefit over folded cell membrane: More surface
View Full Document
Unlocking...