How Many Endothelins Have Been Identified So Far

question 2

Multiple Choice

How many endothelins have been identified so far?

• A) One.
• B) Two.
• C) Three.
• D) Four.

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Definitions:

Single-Factor Designs

Experiments that investigate the effect of one independent variable on one or more dependent variables.

Interaction Effects

The impact on a dependent variable that changes depending on the levels of two or more independent variables.

Factorial Designs

Experimental setups that allow researchers to examine the effects of two or more factors by changing them simultaneously and observing the results.

Independent Variables

Variables in an experiment or model that are manipulated or changed to observe their effects on dependent variables.