General Biology I Lab - Lab Safety Post Lab Questions

If the hypothesis in a scientific experiment is not supported, the experiment is considers a complete failure and must be repeated until a satisfactory outcome is reached. True or False

False

Using a cell phone in lab is permissible since it can be used for timing experiments. True or False

False

Hypothesis

Formulate a hypothesis and create a strategy

When utilizing the scientific method, there are two types of variables. They are...

Independent and dependent

In which circumstance is food and/or beverage allowed in the laboratory?

Never

Lab coats, gloves, face masks, and goggles are all examples of...

Personal protective equipment

Who and/or what is protected by lab safety protocols?

Students doing lab activities Lab instructros and technical assistants Anyone who walks into the lab The physical lab space and the equipment housed within the lab

When determining the scope of an experiment, you need to consider...

The outcome you will investigate and the factor that will vary

Which of the following items may be on the laboratory bench top while doing lab work? A) cultures (broth tubes, agar plates, agar slants) B) equipment items specifically needed to complete the lab activity C) backpack, purse D) pencil or pen E) cell phone

A, B, D

Which of the following should be worn at ALL times in the lab? A) lab coat B) closed toed shoes C) face mask D) protective goggles

A and B

What should be done to prepare or deal with a laboratory emergency? A) know the location of safety equipment such as the fire extinguisher B) notify your instructor regarding spills or non emergency situations C) call 911 if an emergency occurs D) take antibiotics regularly before attending class in case of spills E) conduct all lab procures under a fume hood

A, B, C

Which of the following are reasons for washing hands before and after lab activities? A) hands may be source of contamination to the lab experiments B) hands may become contaminated with infectious bacteria during lab experiments C) hands may become stained during lab D) hands may be contaminated with irritating chemicals during experiments E) hand washing will sterilize hands

A, B, C, D

Which of the following items should be disposed of in the Sharps container? A) needles B) glass pipettes C) broken glass D) gloves E) agar plates F) scalpel blades

A, B, C, F

A disinfectant is used on your work surface: A) after all work is complete B) all of the answer choices are correct C) after any spill of live microorganisms D) before the beginning of laboratory procedures

B) all of the answer choices are correct

Which of the following represent important safety procedures for microbiology students? A) always wear open toed shoes so organisms do not become trapped in shoes B) wash your hands before and after laboratory procedures C) disinfect your lab bench at the beginning and end of the lab period D) only drink a closed container of water while conducting lab procedures E) Take extra care around the flame of a Bunsen burner by tying up hair and keeping it from combustibles

B, C, and E

Experiment

Carry out the strategy, collect measurements

Imagine that you wish to compare two different diets that will be fed to tadpoles raised is a lab. One diet is a meat-based fish food, and the other is the traditional diet of boiled lettuce. You want to see if the meat based diet will be associated with an increase in the average weight of the tadpoles. In your experiment you keep all other factors, such as tadpole density per pan, temperature, pH and the type of food the same. The only difference between your control group and experimental groups is the type of food the tadpoles receive. What is the independent variable for the tadpole diet experiment?

Diet

Report

Document results

Analysis

Draw graphs, evaluate hypotheses