Lab Report Format
**Must be typed using normal 1” margins, in TIMES NEW ROMAN, 12-point font, and double-spaced. There is a minimum of 4 pages and it is NOT INCLUSIVE of tables or figures. Grammar and clarity of lab report is important. The following sections must be included in your lab report and properly labeled:
Abstract
A brief summary (~1-2 sentences each) of your introduction, methods, results and discussion.
Introduction
You begin by providing background information relevant to understanding the experimental objectives. You will state the question(s) you are addressing and add your hypotheses for each objective. All statements from lab manuals and any outside sources MUST BE PROPERLY CITED. Do not use random websites as source material.
Methods
You will thoroughly write all the methods you used to test your hypotheses. Write in full sentences and in paragraph form.
Results
You will report your findings here. If you have several findings, then break it down into several parts so that you can clearly state your results. Add figures and/or tables here and be sure to properly number each figure and/or table.
Discussion
You will discuss why your results are the way they are, and whether your hypotheses were correct or not. You may also include outside literature to add further evidence to your reasoning. All statements from textbooks, lab manuals, and any outside sources MUST BE PROPERLY CITED.
References
Any information that you gather from other sources need to be cited and compiled in a reference list. (Example: APA style or MLA style)
PLEASE SEE BOTH ATTACHED DOCS TO HELP WITH THE LAB REPORT
THESE QUESTIONS/HYPOTHESIS MUST BE ANSWERED AND INCLUDED
IN THE INTRODUCTION:
Hypotheses
1. Which culture will produce the most CO2? Why? Use your knowledge as
evidence to back up this hypothesis.
Hypothesis 1:
2. Which culture will produce the most ethanol? Why? Use your knowledge as
evidence to back up this hypothesis.
Hypothesis 2:
3. Which culture will produce the most cells? Why? Use your knowledge on
cellular respiration to back up this hypothesis.
Hypothesis 3:
These are the materials used in case you want to put it in the lab report:
Materials:
● 3 Plastic bottle or tube (with a hole on the side to attach the drinking straw)
● 9 Plastic test tubes
● 3 Transfer pipettes
● 3 Bendable drinking straw
● 3 Balloons
● Baker’s yeast
● Sugar
● 3 Small plastic cups (to be filled with water)
● 3 pH strips
● 3 Ethanol strips
● 1 Marking Pen
● 1 ruler
THIS INFORMATION AND THESE PICTURES MUST BE INCLUDED INTO
THE RESULTS SECTION. ALL QUESTIONS MUST BE ANSWERED USING
THIS INFO AND INCLUDED UNDER THE RESULTS SECTION:
● What changes do you observe in each yeast culture?
● Did the results match your hypothesis? If not, what do you think
happened? (Hint: look at your experimental setup; can you see any
caveats?)
● Which tube is the cloudiest? What does this mean?
● Which tube is the least cloudy? What does this mean?
● Which tube had no effect? Why?
At no inflation: D=3.6 cm
Balloon Diameter (cm) Depth of Bubbles (cm)
Time
(min)
A. Control B. Aerobic C. Anaerobic A. Control B. Aerobic C. Anaerobic
0 3.6 3.6 3.6 0 0 0
30 3.6 3.6 3.6 0 0.1 0.1
60 3.6 3.6 3.82 0 0.3 0.2
90 3.6 3.6 4.46 0 0.6 1.0
120 3.6 3.6 5.10 0 0.7 1.3
150 3.6 3.6 5.25 0 1.1 1.8
180 3.6 3.6 5.41 0 1.1 2.0
Ethanol Color % Ethanol pH color pH
A. Control No Color Change 0 Yellowish Green 7
B. Aerobic No Color Change 0 Bright Orange 6
C. Anaerobic Light Blue 0.02 Bright Orange 6
Time
(min)
Observation
0
30
60
90
120
150
180
Results
Guidelines
Serial Dilution
A. Control
B. Aerobic
C. Anaerobic
