Choose the One Most Appropriate Answer for Each

question 36

Multiple Choice

Choose the one most appropriate answer for each.
-Homo erectus

• A)shorter than modern humans, but stood upright; stocky body adapted to colder climates
• B)arose in Africa about 2 million years ago; had a significantly larger brain than earlier hominins and a gait similar to modern humans
• C)modern humans since 195,000 years ago
• D)Lucy; lived about 3.2 million years ago

Appreciate the role of early environmental exposures on long-term health outcomes.

Understand the physiological functions of the lymphatic system.

Comprehend the fundamental principles of growth, development, and differentiation in human biology.

Grasp the concepts of hormonal feedback mechanisms and their role in homeostasis.

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Definitions:

Operational Definition

A clear, precise definition of a study variable in terms of the specific methods or procedures used to measure or identify it.

Independent Variable

In an experiment, the variable that is manipulated to test its effects on the dependent variable, to determine causality.

Convenience Sampling

A non-probability sampling technique where subjects are selected because of their convenient accessibility and proximity to the researcher.

Random Sampling

A technique used in research to select a sample in which each member of the population has an equal chance of being included.