Presentation on theme: "Cell Structures, Transport & Homeostasis, and Role of Enzymes Biology EOCT Review Created Spring 2012."— Presentation transcript:
1 Cell Structures, Transport & Homeostasis, and Role of Enzymes Biology EOCT Review Created Spring 2012
2 DNA and RNA are macromolecules made up of NucleotidesCarbohydratesLipidsAmino acids
3 2. Which structure would you expect to observe when examining a prokaryotic cell with a microscope? NucleusChloroplastCell membranemitochondria
4 3. Homeostasis is the maintenance of a relatively stable internal environment. Cells have several mechanisms that regulate their internal environments. Which of these mechanisms of cellular homeostasis expands energy?OsmosisPassive transportDiffusionActive transport
5 4. Which organelle carries out the process of photosynthesis? VacuoleMitochondriaChloroplastEndoplasmic reticulum
6 5. The place where reactants bind to an enzyme during a reaction is called the ProductActivation energySubstrateActive site
7 6. If an animal were placed in a solution of ocean water, what would happen? The cell would swell because the water solution is hypotonic.The cell would swell because the water solution is hypertonic.The cell would shrivel because the water solution is hypertonic.The cell would shrivel because the water solution is hypotonic.
8 7. Which of the following macromolecules are composed of chains of amino acids that join together to form the structural components of organisms?CarbohydratesLipidsProteinsNucleic acids
9 8. Which of the following macromolecules are the main source of quick energy? LipidsCarbohydratesNucleic acidsProteins
10 9. In which type of cellular transport do molecules bind to channel proteins in order to move across a selectively permeable membrane against a concentration gradient?Facilitated transportActive transportDiffusionosmosis
11 10. Which of the following environmental changes is MOST likely to slow chemical reactions in cells? Increased temperatureDecreased temperatureAn increase in the number of substrate molecules in solutionsNeutralization of an acidic environment
12 11. What does the peak of the blue line represent?Energy of the productsReaction progressActivation energy without a catalystActivation energy with a catalyst
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