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CELL SIGNALING MCQs

Total Questions : 22 | Page 1 of 3 pages
Question 1. What is a function of the second messenger IP3?
  1.    bind to and activate protein kinase A
  2.    activate transcription factors
  3.    convert ATP to cAMP
  4.    bind to and open ligand-gated channels
 Discuss Question
Answer: Option D. -> bind to and open ligand-gated channels
Question 2. What could be the cause for a cell to undergo apoptosis?
  1.    DNA damage
  2.    Radiation
  3.    Nutrient deficiency
  4.    All of the above
 Discuss Question
Answer: Option D. -> All of the above
Question 3. Apoptosis can't kill which of the following?
  1.    Cell infected with viruses
  2.    Cell with DNA damage
  3.    Cancer cells
  4.    Immune cells
 Discuss Question
Answer: Option C. -> Cancer cells
Question 4. Which of the following cell organelle actively participates in animal apoptosis?
  1.    Nucleus
  2.    Mitochondria
  3.    Lysosomes
  4.    Vacuoles
 Discuss Question
Answer: Option B. -> Mitochondria
Question 5. How do bacteria sense local population density?
  1.    quorum sensing
  2.    bacteria sensing
  3.    signal sensing
  4.    population sensing
 Discuss Question
Answer: Option A. -> quorum sensing
Question 6. What organelle stores calcium?
  1.    smooth ER
  2.    rough ER
  3.    nucleus
  4.    mitochondrion
 Discuss Question
Answer: Option A. -> smooth ER
Question 7. Which is not a signaling step?
  1.    reception
  2.    transduction
  3.    response
  4.    second messaging
 Discuss Question
Answer: Option D. -> second messaging
Question 8. How many stages are there to cell conversation?
  1.    4
  2.    6
  3.    3
  4.    87
 Discuss Question
Answer: Option C. -> 3
Question 9. Synaptic Signaling occurs in which type of cell?
  1.    Muscle cell
  2.    Nervous System cell
  3.    White Blood Cell
  4.    Red Blood
 Discuss Question
Answer: Option B. -> Nervous System cell
Question 10. Do plant cells communicate using hormones?
  1.    yes
  2.    no
 Discuss Question
Answer: Option A. -> yes

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