Concept Check: NYS Making Connections

Base your answers to questions 1 and 2 on the information below and on your knowledge of biology.

A student hypothesized that the pulse rates of his classmates would increase after walking. The student then obtained pulse rates from five classmates after they walked for 15 minutes. The data, in beats per minute, were recorded as: 78, 68, 84, 88, and 90.

5

Identify the dependent variable in this investigation.

5

Identify one error in the experimental procedure.

5

Identify one waste product that is more effectively removed from muscle cells as a result of increased pulse rate.

Base your answers to questions 4 and 5 on the information below and on your knowledge of biology.

Before watching a scary movie, the members of a theater audience agreed to have their heart rates monitored. They were asked to sit in silence for 10 minutes before the film began. The movie was then shown from beginning to end. 

The scatter plot on the right summarizes the data collected by all of the heart monitors from ten minutes before the start of the movie to the end of the movie.

5

In this experiment, the dependent variable is the

5

Identify the dependent variable in this investigation.

Identify one error in the experimental procedure.

Identify one waste product that is more effectively removed from muscle cells as a result of increased pulse rate.

In this experiment, the dependent variable is the

Which is a possible hypothesis most likely being tested in this experiment?