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AP Biology 4.3 A Describe the Different Types of Cellular Responses Elicited By a Signal Transduction Pathway Questions

Practise AP Biology 4.3.A questions by connecting signal transduction with gene expression, cell function, differentiation and programmed cell death.

Syllabus
Effective Fall 2025
Course
AP Biology

Exam points

  • identify differentiation and apoptosis as possible cellular outcomes of signaling
  • explain how neurotransmitter regulation can change the range of cellular responses
  • link pathway data to changes in target-gene expression or broader cell function

AP Biology 4.3 A Describe the Different Types of Cellular Responses Elicited By a Signal Transduction Pathway Questions question 1

[Maximum number: 1]
B-cell activation model

B-cell activation model

As represented in the model above, B cells are activated by direct contact with antigens or stimulated helper T cells (TH)\left(\mathrm{T}_{\mathrm{H}}\right). Based on the model, which of the following best describes an outcome of B cell activation?

A

Activated B cells differentiate into plasma cells and memory cells.

B

Activated B cells stimulate TH\mathrm{T}_{\mathrm{H}} cells to secrete antibodies.

C

Both B cells and TH\mathrm{T}_{\mathrm{H}} cells release chemical signals that negatively regulate antigen-presenting cells.

D

Plasma cells produce antibodies that activate additional B cells by a positive feedback mechanism.

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