The cells responsible for the production of circulating antibodies are ________ cells. Question 6Select one:a.NKb.plasmac.helper Td.thymuse.liver

Step 1: Break Down the Problem

We need to identify which type of cells are responsible for the production of circulating antibodies. The options provided are:

1. NK cells
2. Plasma cells
3. Helper T cells
4. Thymus
5. Liver

Step 2: Relevant Concepts

• Circulating Antibodies: These are proteins produced by the immune system to identify and neutralize foreign objects like bacteria and viruses.
• Plasma Cells: These are differentiated B cells that produce large volumes of antibodies.

Step 3: Analysis and Detail

• NK Cells: Natural Killer cells are involved in the direct attack of infected or cancerous cells, not in antibody production.
• Plasma Cells: These are specifically designed to produce antibodies after being activated by antigens.
• Helper T Cells: These assist in activating B cells but do not produce antibodies themselves.
• Thymus: This is an organ that develops T cells but does not produce antibodies.
• Liver: It plays roles in various functions but is not directly involved in the production of antibodies.

Step 4: Verify and Summarize

After analyzing each option, it is clear that the correct answer is Plasma cells, as they are specifically responsible for the production of circulating antibodies.

Final Answer

b. Plasma cells are the cells responsible for the production of circulating antibodies.