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Intro Anatomy 3
General
Question | Answer |
---|---|
Major function of Proteins | Responsible for structure of body cells &Building Blocks are Amino Acids that act as either acids or Basis |
What is Matter | Has mass, occupies spaceExists in solid, liquid and gas states |
What is Energy | Capacity to do work |
Solutions | 2 or more substances physically mixedHomogenous mixturesSolvent - greater quantitySolute- lesser qunatity |
Use of water in the body | Heat homeostatis - high heat capicity and vaporisationReactivity - in chemical reactionsCushioning - protects the bodySovent properties |
3 uses of Protein | Catalysis - regulates rate of biochemical reactionsTransport hemoglobin transports oxygen in the bloodDefense - specialist protein antibodies are release dby immune cells |
Functions of DNA & RNA | DNA - specifies protein structure and replicate its selfRNA - carries out DNZ's instructions for protein synthesis |
3 major regions of an generalised animal cell | Nucleuscytoplasmplasma membrane |
Colloids | heterogenerous mixturesappearance milkySol-gel transformation |
Suspensions | Heterogeneous mixturevisible solutesparticles will settle out if not moving |
Passive Transport | Transport of substances without energy input |
various forms of passive transport | Simple DiffusionFacilitated diffusionOsmosisFiltration |
Simple Diffusion | movement of lipid soluable substances across the plasma membrane |
Osmosis | Movement of water in and out of the cells. occurs when there is an imblance on two sides of the membrane. |
Facilitated Diffusion | Movement of large or lipid insoluable particles using a protein carrier |
Filtration | movement of water or solutes across the plasma membrane using hydrostatic preasure |
Nucleolus | Made of RNAProduces Ribosomes which are essential for protein synthesis |
Function of Chromatin | Strands DNA and gobular protein.physical means to package the long molecules of DNA in a compact and orderly way |
Rough Endoplasmic Reticulum | Studded with RibosomesRibosmoes process all the protein that is secreted from tehe cells |
Mitochondria | Power house and produces most of the ATP energy need by the cell |
Peroxisomes | Disharm dangerous 'free radicals" |