NAME: ________________________

Chapter 11: Cell Communication Test

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5 Written Questions

5 Matching Questions

  1. Response
  2. Hormonal Signaling (long-distance)
  3. Signal Transductoin Pathway
  4. second messengers
  5. What is the source of phophate in a phosphorylation cascade?
  1. a transduction signal finally triggers some sort of response
  2. b ATP
  3. c Specialized endocrine cells secrete hormones into body fluids (often the blood)
  4. d process by which a signal on a cell's surface is converted to a specific cellular response
  5. e small, non-protein, water soluble molecules or ions
    can readily spread throught the cell by diffusion

5 Multiple Choice Questions

  1. A nerve cell releases neurotransmitter molecules into the synapse, stimulating the target cell
  2. plasma membrane receptors that are characterized by having enzymatic activity
  3. enzyme that catalyzes the transfer of phosphate groups
  4. control which genes are turned on (which gense are transcribed to mRNA) ex. testosterone
  5. a molecule that specificlly binds to another molecule, often a larger one

5 True/False Questions

  1. quorum sensingconcentration of signaling molecules allowing bacteria to sense the local density of other bacterial cells

          

  2. Receptiontransduction signal finally triggers some sort of response

          

  3. apoptosistransduction signal finally triggers some sort of response

          

  4. protein kinaseenzymes that can rapidly remove phophate groups from proteins (a process called dephosphorylation)

          

  5. cAMP usually direclty activates...?plasma membrane receptors that are characterized by having enzymatic activity

          

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