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BIOL 1406 Unit 2
| Question | Answer |
|---|---|
| Describe the relationship between dehydration reactions and hydrolysis | dehydration assembles polymers; hydrolysis breaks them apart |
| Why does water separate from oil | water molecules form hydrogen bonds between themselves that exclude fat |
| Which structure is not affected by a protein denaturing | primary structure |
| Uracil is found in what structure | RNA |
| which organism groups contain only prokaryotic cells | Bacteria and Archaea |
| What is a major factor in limiting the size of a cell | ratio of surface area and volume |
| which organelle is defective when an accumulation is not stopped | lysosomes |
| which cytoskeletal protein is required by cells to assemble cilia or flagella | tubulin |
| a characteristic feature of integral membrane proteins | amphipathic, and have at least one hydrophobic region |
| Why is the Na-K pump an electrogenic pump | it generates voltage across the membrane |
| why are proton pumps found in organisms across every domain of life | proton gradients were used by cells ancestral to all three domains |
| term describing the process of breaking down large molecules | catabolism |
| what is a key consequence of the 1st law of thermodynamics | organisms must obtain all necessary energy for life from the environment |
| how does a noncompetitive inhibitor decrease the rate of an enzyme-catalyzed reaction | it binds to an allosteric site, altering active site shape |
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