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Melanie Grayson
Anatomy Weeks 1-6
| Term | Definition |
|---|---|
| RNA | Ribonucleic Acid - nucleic acid found in both nucleus and cytoplasm of cells; involved in a transmission of genic information from nucleus to cytoplasm and in cytoplasmic assembly of proteins. |
| rRNA | ribosomal Ribonucleic Acid - form of RNA that makes up most of the structures (subunits) of the ribosome organelle of the cell |
| mRNA | messenger Ribonucleic Acid - duplicate copy of a gene sequence on the DNA that passes from the nucleus to the cytoplasm; used by ribosomes to create specific proteins |
| tRNA | transfer Ribonucleic Acid - molecules carry amino acids to the ribosome for placement in the sequence prescribed by the mRNA |
| Ribosome | Organelles in the cytoplasm of cells that synthesizes proteins; sometimes called "protein factory" |
| Diffusion | Natural phenomenon caused by the tendency of small particles to spread out evenly within any given space |
| Concentration Gradient | A measurable difference in the concentration from one area to another. |
| Simple Diffusion | When molecules pass directly through the phospholipid membrane |
| Semipermeable Membrane | Allows water to pass through the membrane , but blocks the passage of at least one solute |
| Osmotic Pressure | the pressure that prevents the movement of water by osmosis from pure water into the solution |
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mgrayson266
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