Which of the Following Lists All of the Events That

question 20

Multiple Choice

Which of the following lists all of the events that occur with respiration?

• A)Inhaling and exhaling
• B)Ventilation, external and internal respiration, and cellular respiration
• C)Inflating and deflating alveoli
• D)Delivering carbon dioxide to cells and removing oxygen from cells

---

Definitions:

Independent Variable

A variable that is manipulated or changed in an experiment to observe its effects on a dependent variable.

Dependent Variable

In experimental research, the variable that is observed and measured to determine the effect of the independent variable, reflecting outcomes or changes.

External Validity

The extent to which the results of a study can be generalized to other situations and to other people.

Internal Validity

The extent to which a study can demonstrate that a causal relationship exists between variables, free from external influences.