1st Period Semester Exam Study Guide

Front

What is the variable that is purposely changed in an experiment?

Back

Independent variable

Front

What type of observations deal with descriptions that cannot be expressed in numbers?

Back

Qualitative observations

Front

What structures in the small intestine help absorb nutrients?

Back

Villi

Front

What are blood vessels that carry blood away from the heart called?

Back

Arteries

Front

What is the main function of the stomach in the digestive system?

Back

To break down food using acids and enzymes.

Front

What is the role of the pancreas in digestion?

Back

To produce enzymes that help digest food.

Front

What type of blood vessels carry blood back to the heart?

Back

Veins

Front

What is the function of capillaries in the circulatory system?

Back

To facilitate the exchange of oxygen, carbon dioxide, nutrients, and waste between blood and tissues.

Front

What is a hypothesis in scientific research?

Back

A testable prediction about the relationship between variables.

Front

What is the difference between quantitative and qualitative data?

Back

Quantitative data can be measured and expressed in numbers, while qualitative data is descriptive and cannot be measured.