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Chapter 3 - Cells
cells
| Question | Answer |
|---|---|
| ___ is the most abundant protein of the body | collagen |
| water follows ___ | solute |
| chemical messengers come in the form of __ or ___ | proteins, fats |
| solute + solvent = | solution |
| crenation | when cell shrinks |
| hydrolysis | when cell bursts |
| isotomic | same concentration of solute in & out of cell |
| hypertonic | excessive solute outside of solution |
| hypotonic | excessive solute inside of solution |
| DNA | double stranded nucleic acid that comes up with hereditary info |
| mRNA | carries transcript of code to cytoplasm |
| rRNA | forms ribosomes |
| tRNA | moves amino acids to ribosomes then decodes mRNA msg for amino acid sequence |
| Uracil exists only in ___ | RNA |
| transcription | transfers information from DNA sequence to complementary sequence |
| translation | nucleic acids are translated to proteins |
| 2 major steps of protein synthesis are: | transcription & translation |
| gap junctions | helps pass things through more easily |
| tight junctions | helps prevent molecules from passing through |
| desmosones | holds skin cells together |
| passive transport | things cross the membrane w/o energy |
| active transport | cell provides energy to move things across membrane |
| osmosis | movement of WATER from high to low concentration |
| diffusion | movement of particles from high to low concentration |
| selectively permeability | membranes that allows some material to pass through, not others |
| a human cell has 3 main parts: | cytoplasm, plasma membrane, nucleus |
| endocytosis | cell enters |
| exocytosis | cell exits |
| aquaporins allow: | diffusion of water molecules |
| facilitated diffusion | movement is controlled by a protein, increases rate of diffusion |
| hydrophobic | water fearing - nonpolar |
| hydrophilic | water loving - polar |
| polar heads are attracted to: | water |
| nonpolar tails are attached to: | the membrane |
Created by:
Mariahj25
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