Which Is the Best Explanation of How Immune Suppression Can

question 55

Multiple Choice

Which is the best explanation of how immune suppression can be helpful in preventing transplant rejection?

• A) The immune system sometimes reacts against foreign antigens in the grafted tissue, causing what is often called a rejection syndrome. Immune suppression drugs reduce the immune system's ability to attack the foreign antigens in the donated tissue.
• B) Because rejection is caused by an inappropriate and excessive response to self-antigens, giving immune suppression drugs would reduce this effect.
• C) Rejection involves antigen-antibody reactions, mainly IgE triggered by repeated exposure to an allergen, so immune suppression drugs would reduce the reaction to the allergen, which in this case is the transplanted organ.
• D) Delayed allergic response occurs with transplanted organs, so immune suppressive drugs would reduce the allergic response and decrease rejection.

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Definitions:

Hydrophobic

Type of molecule that is typically nonpolar and therefore does not interact easily with water.

Hydrophilic

Type of molecule, often polar, that interacts with water by dissolving in water and/or by forming hydrogen bonds with water molecules.

Phospholipids

A type of lipid molecule that forms the main structure of cell membranes, composed of two fatty acids, a phosphate group, and a glycerol molecule.

Plasma Membrane

The lipid bilayer that encloses the cytoplasm of a cell, regulating the passage of substances in and out of the cell.