Phoronid Worms

question 37

Multiple Choice

Phoronid worms

• A)are relatively large and usually over 30 cm in length.
• B)are tube-dwelling marine animals.
• C)are most common in deep tropical oceans near thermal vents.
• D)spend a lot of time scavenging across the sea floor.
• E)are a serious threat to oyster beds.

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Definitions:

Alpha Interferon

A type of protein produced by the body's immune system, used in the treatment of various infections and diseases, including some types of cancer.

Lymphotoxin

A cytokine produced by certain lymphocytes that can induce cell death and has a role in immune response.

Cytokines

Small proteins released by cells, particularly immune cells, that have a specific effect on the interactions and communications between cells.

Interleukin 4

A cytokine that plays a significant role in immune system regulation, promoting the development of T helper 2 cells.