Unit 1: Marathon Runner Exam Review

Front

What is a dependent variable in an experiment?

Back

The dependent variable is the factor that is measured or observed in an experiment, which changes in response to the independent variable.

Front

In the context of exercise, what is the dependent variable when measuring the effect on squeezing a clothespin?

Back

The number of times the student was able to squeeze the clothespin.

Front

What hormone is produced when blood glucose levels are high?

Back

Insulin is produced when blood glucose concentration is above normal.

Front

Where does most nutrient absorption occur in the human body?

Back

Most absorption of nutrients takes place in the small intestine.

Front

What physiological changes occur during vigorous physical activity?

Back

Breathing and heart rates increase to enable cells to perform more efficiently.

Front

What is the primary purpose of increased breathing and heart rates during exercise?

Back

To remove waste products faster from the cells.

Front

What gas do the lungs expel when a person exhales?

Back

Carbon Dioxide.

Front

Define 'nutrient absorption'.

Back

Nutrient absorption is the process by which the body takes in nutrients from food, primarily occurring in the small intestine.

Front

What is the role of insulin in the body?

Back

Insulin helps regulate blood glucose levels by facilitating the uptake of glucose into cells.

Front

What is the function of the small intestine?

Back

The small intestine is responsible for the majority of nutrient absorption and digestion.