Physiology variables
Mon, Mar 1, 2027 · Week 7 · Biotechnology for Health (Biomedical Innovations)
Today's goal: Launch Problem 2 by identifying variables for a human physiology research design.
What a finished product looks like
This is a model of the work you should turn in today. Use it to check your own: match the structure and the level of detail, do not copy it. Your data and wording should be your own.
Problem 2 launch: variables and hypothesis
Physiological measure I will investigate: heart rate.
Variables:
- Independent (what I change): exercise level, sitting at rest versus 2 minutes of step-ups.
- Dependent (what I measure): heart rate in beats per minute.
- Controlled (what I keep the same): same person, same time of day, same step height and pace, 1-minute rest before each reading.
Testable hypothesis: If a person does 2 minutes of step-ups, then their heart rate will increase compared to their resting rate, because exercise raises the body's demand for oxygen and the heart pumps faster to meet it.
Why this is testable: it predicts a measurable change (heart rate) tied to a variable I control (exercise level), so I can confirm or disconfirm it with data.
Also due today: Submit your variables and hypothesis to the Schoology Problem 2 launch assignment by end of period.
WebXam problem for today's skill
One exam-style question that uses exactly what you practiced today. Try it before you reveal the answer, then read why each choice is right or wrong.
Tap an answer to see the full explanation. Nothing is recorded or graded.