A Specific Immune Response Triggered by a Pathogen Involves Several

question 40

Multiple Choice

A specific immune response triggered by a pathogen involves several steps.Which of these steps occurs first?

• A) R proteins trigger specific immune responses.
• B) PR proteins signal cells that have not yet been attacked.
• C) Effector binds to cytoplasmic receptor (R protein)inside the cell.
• D) Signaling molecules in the cell trigger production of defensive molecules.
• E) Substances are produced to strengthen the cell wall and block plasmodesmata.

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Definitions:

Axon

A long, slender projection of a nerve cell, or neuron, that typically conducts electrical impulses away from the neuron's cell body.

Cell Body

The part of a neuron that contains the nucleus and most of the cytoplasm, serving as the site for essential cellular functions.

Soma

The cell body of a neuron, containing the nucleus and metabolic machinery necessary for neural functions.

Axon

A long, slender projection of a neuron that conducts electrical impulses away from the neuron's cell body toward other neurons or muscles.