A Substance That Is Seen by the Body as a Foreign

question 38

Multiple Choice

A substance that is seen by the body as a foreign invading substance is known as a/an

• A)antibody.
• B)antigen.
• C)mast cell.
• D)leukocyte.

---

Definitions:

Survey Methods

A research technique that involves collecting data from a predefined group of respondents to gain information about a particular subject area.

Experimental Methods

Scientific procedures used to investigate relationships between variables by deliberately manipulating one variable to study its effect on another.

Distance Themselves

An action or behavior in which individuals or entities create emotional or physical space from others or certain ideas to avoid association or involvement.

Pilot Study

A small-scale preliminary study conducted to evaluate feasibility, time, cost, risk, and adverse effects before proceeding to a full-scale research project.