Physiology variables
Fri, Feb 26, 2027 · Week 6 · Biotechnology for Health (Biomedical Innovations)
Today's goal: Launch Problem 2 by identifying variables for a human physiology research design.
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.
This model shows the level of evidence and organization needed to complete: A Problem 2 launch ticket naming a physiological measure, its independent, dependent, and controlled variables, and a testable hypothesis.
- Name the prompt or task.
- Answer it directly with the key evidence.
- Check that the response matches the requested format.
Keep the structure. Replace the question, facts, measurements, and evidence. Then recheck units, vocabulary, and whether the conclusion goes beyond the evidence.
Also due today: Submit your variables and hypothesis on Schoology by end of period.
Turn in: Variables and hypothesis ticket
Go to Schoology to turn this in.
Submit one PDF. Put your first and last name in the document header. Name the file: FirstName LastName - Assignment Title - YYYY-MM-DD.pdf.
Open Schoology PDF upload helpIf you cannot get in, see Mr. Mendoza. Do not skip the work.
Claim ceiling: Today's evidence supports a classroom claim about physiology variables. It cannot prove causation, diagnose a real patient, or justify action outside this room.
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.
It builds this reusable test skill: Identifying the dependent variable in a physiology study.
- Name the concept or data pattern being tested.
- Cross out choices that violate that rule or the evidence.
- Justify the best remaining choice before checking the answer.