3. Explain how the function of the organelle you selected in question 36 assists in the maintenance of homeostasis.

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1 Name: Date: 1. Base your answer(s) to the following question(s) on the diagrams below and on your knowledge of biology. The diagrams represent two different cells and some of their parts. The diagrams are not drawn to scale. Identify the organelle labeled X in cell! B. 2. Base your answer(s) to the following question(s) on the diagram, which shows some of the specialized organelles in a single-celled organism, and on your knowledge of biology. Write the letter of one of the labeled organelles and state the name of that organelle. 3. Explain how the function of the organelle you selected in question 36 assists in the maintenance of homeostasis. page 1

2 4. Base your answer(s) to the following question(s) on the diagrams below of two cells, X and Y, and on your knowledge of biology. Select one lettered organelle and write the letter of that organelle in the space below. Identify the organelle you selected. 5. State one function of the organelle that you identified in question Data from two different cells are shown in the graphs below. Which cell is most likely a plant cell? Support your answer. page 2

3 7. Organelles carry out specific processes involving chemical reactions. In the chart below, identify two organelles and, for each, identify a process involving chemical reactions that occurs there. Describe one specific way each process identified is important to the functioning of the organism. page 3

4 8. Base your answer to the following question on the diagram below and on your knowledge of biology. In a cell, a variety of structures perform specific functions and interact to maintain homeostasis. The diagram below represents a typical cell with three cell structures labeled 1, 2, and 3. Select one cell structure labeled in the diagram and write its number in the space below. selected helps maintain homeostasis in a cell. In your answer, be sure to: Explain how the cell structure you identify the cell structure you selected state one function of this cell structure identify one substance that is often associated and state how that substance is associated with the cell structure identify one other cell structure and explain how it interacts with the cell structure you selected to maintain homeostasis in the cell Cell structure number: 9. Describe how two of the cell structures listed below interact to help maintain a balanced internal environment in a cell. mitochondrion ribosome cell membrane nucleus vacuole In your answer be sure to: select two of these structures, write their names, and state one function of each describe how each structure you selected contributes to the functioning of the other page 4

5 Problem-Attic format version c EducAide Software Licensed for use by devin hag Terms of Use at 10/26/ ribosome 2. A = vacuole (or food vacuole) B = vacuole (or contractile vacuole) C = nucleus D = cell membrane A = Food is digested (or stored) in the vacuole. B = Liquid wastes are stored in the vacuole. C = The nucleus controls the activities of the cell. D = The cell membrane controls the movement of molecules into and out of the cell. itala cell/plasma membrane or B nucleus or C mitochondrion. (cell membrane) regulates what enters and leaves the cell. (nucleus) controls cell activities or contains the genetic codes. (Do not accept brain or control center without further explanation.) (mitochondrion) respiration or energy release or production of ATP (Do not accept power house without further explanation.) 9. mitochondrion release of energy from nutrients, ribosome protein synthesis, cell membrane regulates movement of materials into and out of the cell, nucleus regulates cell functions or carries the genetic code, or vacuole storage The nucleus contains the code for the enzymes that function in the mitochondrion. The mitochondrion provides energy that is needed by the nucleus Cell 1, because it contains chloroplasts. OR Cell 1, because it has a cell wall. Organelle Process Involving Chemical Reactions that Occur in the Organelle How the Process is Important to the Functioning of the Organism mitochondrion respiration provides energy for life functions chloroplast photosynthesis provides food for plant ribosome protein synthesis makes structural molecules (or chemical messengers which control cell responses) ucleus mitosis or meiosis or DNA replication reproduction ribosome; site of protein synthesis; amino acid - used to make proteins; nucleus - the ribosome gets instructions from the nucleus determining which proteins are produced by the cell