HIV Disease Is Not Spread

question 17

Multiple Choice

HIV disease is not spread:

• A)to a developing fetus from the infected mother.
• B)by inhalation.
• C)through percutaneous exposure.
• D)from sexual activities.

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Definitions:

Carrier Proteins

Proteins that transport specific substances across cell membranes through a change in their own structure, vital for the movement of various molecules across cellular barriers.

Receptor Proteins

Proteins on the cell surface or within cells that bind to specific molecules, triggering a response in the cell.

Diffusion

The passive movement of molecules or particles from an area of higher concentration to an area of lower concentration, until equilibrium is reached.

Allergic Reaction

An immune response to a substance, known as an allergen, that is typically harmless to most people.