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Transcript
Cells Review Which statement explains why viruses are exceptions to the cell theory? 1. 2. 3. 4. They contain genetic material. They are not made up of cells. They reproduce by mitosis. They are surrounded by a protein coat. Give the cell organelle that performs each function. 1. Transport materials throughout the cell = Endoplasmic reticulum 2. Protein production = ribosomes 3. Digests food = lysosomes 4. Regulates what enters and leaves the cell = cell membrane 5. Produces energy = mitochondria 6. Controls all cell activities = nucleus 7. Holds cell organelles = cytoplasm 8. Site of photosynthesis = chloroplasts 9. Used in cell division = centrioles 10. Gives plant cell shape and support = cell wall 11. Destroys old cell parts = lysosomes 12. Packages materials = golgi bodies Identify some differences between prokaryotic and eukaryotic cells. Prokaryotic no nucleus Eukaryotic nucleus no membrane bound organelles have membrane bound organelles smaller DNA is found in cytoplasm larger DNA is found inside the nucleus 1. What type of transport does this picture represent? active transport 2. Explain your answer. Substances are moving from a LOW to HIGH concentration. The diagram above shows the same type of molecule in area A and area B. With the passage of time, some molecules move from area A to area B. This movement is the result of the process of ____. passive transport C6H12O6 + 6O2 6CO2 + 6 H2O + X 1. What is the name of the process represented above? aerobic respiration 2. Where does this process occur? mitochondria 3. What molecule does X represent? 36 ATP C6H12O6 CO2 + alcohol + X 1. What type of respiration is represented above? anaerobic respiration 2. What is the specific name for this process? alcoholic fermentation 3. Where IN A CELL does this process occur? cytoplasm 4. What type of cell carries on this process? Yeast cells 4. What molecule does X represent? 2 ATP C6H12O6 lactic acid + X 1. What type of respiration is represented above? anaerobic respiration 2. What is the specific name for this process? lactic acid fermentation 3. Where IN A CELL does this process occur? cytoplasm 4. What type of cell carries on this process? Muscle cells 5. What molecule does X represent? 2 ATP Identify some differences between passive and active transport. Passive transport Active transport Substances move from high to low No energy needed Diffusion and osmosis Substances move from low to high Needs energy pinocytosis and phagocytosis