BIOD 101 Essential Biology I Module 1 Lab
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Section 1: Lab Safety & Scientific Method (Questions 1–25)
1. What is the primary purpose of wearing safety goggles in the biology lab?
• A) To improve visibility
• B) To protect the eyes from chemical splashes and biological hazards
• C) To magnify specimens
• D) To reduce glare from lighting
• Safety goggles create a physical barrier that prevents chemicals,
biohazards, and debris from contacting the eyes, which is a required OSHA
lab safety practice.
2. Which of the following should be done FIRST if a chemical splashes into your
eye?
• A) Notify the instructor after cleaning up
• B) Flush the eye at the eyewash station for at least 15 minutes
• C) Apply eye drops
• D) Continue working and monitor the eye
• Immediate flushing at the eyewash station for 15 minutes minimizes
chemical damage; notifying the instructor occurs simultaneously or
immediately after flushing begins.
3. In the scientific method, a testable prediction is called a:
, • A) Theory
• B) Law
• C) Hypothesis
• D) Conclusion
• A hypothesis is a testable, falsifiable prediction based on observations
and prior knowledge.
4. Which variable is deliberately manipulated by the experimenter?
• A) Dependent variable
• B) Control variable
• C) Independent variable
• D) Confounding variable
• The independent variable is the factor the researcher intentionally
changes to observe its effect.
5. A well-designed experiment should include which of the following?
• A) Only an experimental group
• B) Multiple independent variables at once
• C) A control group for comparison
• D) No repetition
• A control group provides a baseline for comparison, isolating the effect
of the independent variable.
6. What does "replication" in an experiment help to ensure?
• A) That results are biased
• B) That results are reliable and reproducible
• C) That only one variable is tested
, • D) That the hypothesis is correct
• Replication reduces the impact of random error and increases
confidence in the reliability of results.
7. Which of the following is NOT a step of the scientific method?
• A) Observation
• B) Hypothesis formation
• C) Proving a theory as absolute fact
• D) Data collection and analysis
• Science never proves anything as absolute fact; theories remain
supported by evidence and are always open to revision.
8. A student notices plants near a window grow taller. This is an example of:
• A) A hypothesis
• B) An observation
• C) A conclusion
• D) A controlled experiment
• The student is noting a phenomenon using the senses, which is the
observation stage of the scientific method.
9. Which piece of lab equipment is used to measure liquid volume most
accurately?
• A) Beaker
• B) Graduated cylinder
• C) Erlenmeyer flask
• D) Test tube
, • Graduated cylinders have fine volume markings, making them more
accurate than beakers or flasks, which are approximate.
10. The meniscus of water in a graduated cylinder should be read at:
• A) The top of the curve
• B) The bottom of the curve at eye level
• C) The bottom of the curve at eye level
• D) The side of the cylinder
• The meniscus of water curves downward (concave); reading the bottom
of the curve at eye level avoids parallax error.
11. What is the correct disposal method for broken glass in the lab?
• A) Regular trash can
• B) Sink
• C) Designated broken glass container
• D) Biohazard bag
• Broken glass must go into a puncture-resistant, labeled glass disposal
container to prevent injury to custodial staff.
12. Which of the following is a biohazard?
• A) Distilled water
• B) Bacterial culture
• C) Table salt
• D) Glass slide
• Bacterial cultures contain living microorganisms that can cause infection
and require biohazard disposal.
13. Proper handwashing in the lab requires at least:
Portage 2026/2027 – Questions and Answers |
100% Verified | Detailed Rationales – Pass
Guaranteed – A+ Graded
Section 1: Lab Safety & Scientific Method (Questions 1–25)
1. What is the primary purpose of wearing safety goggles in the biology lab?
• A) To improve visibility
• B) To protect the eyes from chemical splashes and biological hazards
• C) To magnify specimens
• D) To reduce glare from lighting
• Safety goggles create a physical barrier that prevents chemicals,
biohazards, and debris from contacting the eyes, which is a required OSHA
lab safety practice.
2. Which of the following should be done FIRST if a chemical splashes into your
eye?
• A) Notify the instructor after cleaning up
• B) Flush the eye at the eyewash station for at least 15 minutes
• C) Apply eye drops
• D) Continue working and monitor the eye
• Immediate flushing at the eyewash station for 15 minutes minimizes
chemical damage; notifying the instructor occurs simultaneously or
immediately after flushing begins.
3. In the scientific method, a testable prediction is called a:
, • A) Theory
• B) Law
• C) Hypothesis
• D) Conclusion
• A hypothesis is a testable, falsifiable prediction based on observations
and prior knowledge.
4. Which variable is deliberately manipulated by the experimenter?
• A) Dependent variable
• B) Control variable
• C) Independent variable
• D) Confounding variable
• The independent variable is the factor the researcher intentionally
changes to observe its effect.
5. A well-designed experiment should include which of the following?
• A) Only an experimental group
• B) Multiple independent variables at once
• C) A control group for comparison
• D) No repetition
• A control group provides a baseline for comparison, isolating the effect
of the independent variable.
6. What does "replication" in an experiment help to ensure?
• A) That results are biased
• B) That results are reliable and reproducible
• C) That only one variable is tested
, • D) That the hypothesis is correct
• Replication reduces the impact of random error and increases
confidence in the reliability of results.
7. Which of the following is NOT a step of the scientific method?
• A) Observation
• B) Hypothesis formation
• C) Proving a theory as absolute fact
• D) Data collection and analysis
• Science never proves anything as absolute fact; theories remain
supported by evidence and are always open to revision.
8. A student notices plants near a window grow taller. This is an example of:
• A) A hypothesis
• B) An observation
• C) A conclusion
• D) A controlled experiment
• The student is noting a phenomenon using the senses, which is the
observation stage of the scientific method.
9. Which piece of lab equipment is used to measure liquid volume most
accurately?
• A) Beaker
• B) Graduated cylinder
• C) Erlenmeyer flask
• D) Test tube
, • Graduated cylinders have fine volume markings, making them more
accurate than beakers or flasks, which are approximate.
10. The meniscus of water in a graduated cylinder should be read at:
• A) The top of the curve
• B) The bottom of the curve at eye level
• C) The bottom of the curve at eye level
• D) The side of the cylinder
• The meniscus of water curves downward (concave); reading the bottom
of the curve at eye level avoids parallax error.
11. What is the correct disposal method for broken glass in the lab?
• A) Regular trash can
• B) Sink
• C) Designated broken glass container
• D) Biohazard bag
• Broken glass must go into a puncture-resistant, labeled glass disposal
container to prevent injury to custodial staff.
12. Which of the following is a biohazard?
• A) Distilled water
• B) Bacterial culture
• C) Table salt
• D) Glass slide
• Bacterial cultures contain living microorganisms that can cause infection
and require biohazard disposal.
13. Proper handwashing in the lab requires at least:
