bioe116-Spring06-mt-Li-soln - BioE 116 Midterm #1 SOLUTIONS...

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BioE 116 Midterm #1 SOLUTIONS Spring 2006 - 1 - Please write your name and SID on each page of the exam. Write LEGIBLY and clearly. Only exams written in PEN will be considered for regrades. Part 1. Multiple Choice: Clearly mark the letter of your choice in the space provided. . (2-pts each.) D ____ 1. Which of the following is NOT a form of cell signaling: A. Endocrine B. Autocrine C. Paracrine D. Exocrine E. Neuronal signaling C ____ 2. An ideal scaffold has the following properties EXCEPT: A. No foreign body response B. Can recruit host cells to help populate the scaffold C. Can incite encapsulation D. Cells are able to integrate the material into the host tissue E. Scaffold will degrade without toxic residue A ____ 3. What is the correct sequence of cell migration: A. Cell extension, attaching to ECM at the front, cell contraction, releasing of ECM at the end, recycling molecules. B. Cell extension, attaching to ECM at the front, recycling molecules, cell contraction, releasing of ECM at the end, C. Cell extension, releasing of ECM at the end, cell contraction, recycling molecules, attaching to ECM at the front. D. Cell extension, attaching to ECM at the front, cell contraction, recycling molecules, releasing of ECM at the end. E. Cell extension, recycling molecules, attaching to ECM at the front, cell contraction, releasing of ECM at the end. H ____ 4. Cell migration can be affected by the following environmental cues: A. Growth factor gradients B. Fluid shear stress C. Collagen fiber direction D. Stiffness of substrate E. Cell density F. D, E G. A, C, D, E, H. A, B, C, D, E
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BioE 116 Midterm #1 SOLUTIONS Spring 2006 - 2 - H ____ 5. The following are soluble molecules used in cell-cell communication EXCEPT: A. Steroids B. Cadherins C. Amino acids D. Cytokines E. Nucleotides F. Nitric oxide G. Integrins H. B, G I. B, F, G J. B, D, E, F Part 2. True or False: Write “True” if the statement is true or “False” if the statement is false. If “False”, provide a brief sentence on why it is false. (1 pt each) ____ 1. Induction, effector (e.g., caspase), and protein/DNA degradation are all phases associated with necrosis. False, this is characteristic of apoptosis, not necrosis. ____ 2. Actin filaments are the major intracellular cytoskeletal attachments found in
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bioe116-Spring06-mt-Li-soln - BioE 116 Midterm #1 SOLUTIONS...

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