Cell Signalling Questions

Back to Topic Selection Unit 3 Q&A: Plasma Membrane Q&A: Nucleic Acids and Proteins Q&A: Genes and Regulation Q&A: Biochemical Pathways Q&A: Photosynthesis Q&A: Cellular Respiration Q&A: Cell Signalling Q&A: Responding to Antigens Q&A: Immunity Unit 4 Q&A: Mutations Q&A: Genetic Makeup Q&A: Biodiversity Overtime Q&A: Relatedness Q&A: Human Evolution Q&A: DNA Manipulation Q&A: Biotechnology and Society Q&A: Biotechnology and Disease

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Q1. Outline two possible cellular responses to signal transduction

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Q2. Explain the characteristics of the nervous and endocrine system that leads to the difference in time of action

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Q3. How is a nerve impulse passed from one nerve to the next?

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Q4. Explain why changes in the body that are under nervous control occur quicker than changes under the control of hormones?

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Q5. What is the general function of a hormone?

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Q6. Describe how hydrophilic and hydrophobic hormones exert their effects on their target cell

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Q7. A tissue that has been responsive to hormone X may, over time, lose its response to hormone X, even though the concentration of hormone X remains unchanged

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Q8. Explain why apoptosis sometimes occurs during the cell cycle

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Q9. Suggest a mechanism to explain how a tumour virus (a virus associated with cancer) may interfere with a host cell’s ability to undergo apoptosis.

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Q10. Suggest how apoptosis can be explained as an example of signal transduction

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Q11. Describe a key difference between apoptosis and necrosis

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Q12. Describe two differences between plant and animal hormones

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