Question at position 62 How do helper T cells activate the other cells of the adaptive immune system?By suppressing antigen-presenting cell activityBy transforming into natural killer cellsBy releasing leukotrienesBy releasing cytokinesBy directly attacking infected cells alongside other cytotoxic T cells

Question

BlackTom AI · Accepted Answer

Question restatement: How do helper T cells activate the other cells of the adaptive immune system?
Option 1: 'By suppressing antigen-presenting cell activity' — This is inaccurate. Helper T cells primarily coordinate the immune response, not broadly suppress antigen-presenting cells. Suppression of APC activity is not a primary or defining function of helper T cells.
Option 2: 'By transforming into natural killer cells' — Incorrect. Helper T cells do not transform into NK cells; they are a distinct subset of T lymphocytes (CD4+), with their role centered on signaling rather than cytotoxic transformation.
Option 3: 'By releasing leukotrienes' — Unrelated here. Leukotrienes are lipid mediators involved in inflammatory signaling, but they are not the main mechanism by which helper T cells activate other adaptive immune cells.
Option 4: 'By releasing cytokines' — This is the key mechanism. Helper T cells secrete a variety of cytokines (e.g., IL-2, IFN-γ, IL-4, IL-21) that promote activation and differentiation of B cells, cytotoxic T cells, and other immune cells, effectively coordinating the adaptive response.
Option 5: 'By directly attacking infected cells alongside other cytotoxic T cells' — Direct cytotoxic attack is the domain of cytotoxic T cells (CD8+), not helper T cells. Helper T cells assist rather than perform direct killing, so this description misattributes function.
Assessment: The correct option involves the central coordinating role of helper T cells via cytokine release, which signals and activates B cells, cytotoxic T cells, and other components of the adaptive response. The other choices mischaracterize the helper T cell function by implying suppression, transformation, lipid mediator roles, or direct cytotoxic action, none of which align with the helper T cell's primary mechanism of action.

View Explanation

Log in for full answers

Similar Questions

Why is it challenging and counterintuitive to create vaccines for insects such as honey bees?

Which of the following are components of the adaptive immune system: I. Macrophage II. B cells III. Dendritic cells IV. T cells V. Mast cell VI. Plasma cell VII. Squamous cell

Question at position 9 Which of the following is an example of the specific immune response?Mast cells release histamineComplement proteins trigger opsonizationMembrane attack complexPlasma cells release IgGRelease of interferon from a virus-infected cell

B-lymphocytes are categorized as part of the adaptive branch of the immune system for all of the following reason but one. Which of the following is not one of the reasons B-lymphocytes are considered part of the adaptive immunity?

Which of the following characteristics are most consistent with adaptive immunity?

Which of the following statements is incorrect?

Which is the specific immune response

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler