13 Jun Biology 102/103 – What were your controls for this experiment
On your own and without assistance, complete this Lab4AnswerForm electronically
and submit it via Assignments by the date listed on your Course Schedule (under
Content – Syllabus). NOTE: The Assignment tab closes promptly @ 11:59 PM ET
and will not be available even a minute past the deadline. Save your
Lab4AnswerForm in the following format: LastName_Lab4 (e.g., Smith_Lab4).
I will be posting feedback under a private Lab 4 Feedback group in the Discussions
after I have graded all the labs. You will gain access to the private Lab 4 area if you
submit a complete lab on time.
You must submit your document in a Word (.doc or .docx) or Rich Text Format (.rtf)
to receive credit. I cannot open Works or WordPerfect files.
Experiment 1: Enzymes in
Food (15 pts)
Table 1: Substance vs. Starch
Presence
Substance
Resulting Color
Presence of Starch?
Positive Control: Starch
Negative Control: Student Must Select
Food Product:
Food Product:
Saliva:
Post-Lab Questions
1. What were your controls for this experiment? What did they demonstrate? Why was saliva
included in this experiment?
2. What is the function of amylase? What does amylase do to starch?
3. Which of the foods that you tested contained amylase? Which did not? What experimental
evidence supports your claim?
4. Saliva does not contain amylase until babies are two months old. How could this affect an
infant’s digestive requirements?
5. Digestive enzymes in the gut include proteases, which digest proteins. Why don’t these
enzymes digest the stomach and small intestine, which are partially composed of protein?
Experiment 2: Effect of temperature on enzyme activity (15 pts)
Table 2: Record the effect of temperature on the production of gas
Tube
Temperature
(°C)
Balloon
Circumference
(Uninflated in cm)
Balloon Circumference
(Inflated in cm)
1 (cold)
2 (room temp)
3 (hot)
Post-Lab Questions
1. What is the enzyme in this experiment? What is the substrate?
2. What is the independent (IV) and dependent (DV) variables in this study?
3. How does temperature affect enzyme function?
4. How can enzyme activity be increased?
5. In general, how would an increase in substrate alter enzyme activity? Draw or
insert a graph to illustrate this relationship.
6. Draw a graph using balloon diameter vs. temperature. You may use Excel, then
“Insert” the graph, or use another drawing program. You may also draw it neatly
by hand and scan your drawing. You would need to insert the scanned jpg image
here, in that case. What is the correlation shown on your graph?
7. Design an experiment to determine the optimal temperature for enzyme function,
complete with controls. Be sure to state your hypothesis, describe your design,
dissect your variables (IV/DV), and predict your results. When you describe your
design, be sure to explain where you will find the enzymes for this experiment
and what substrate you will use.
Our website has a team of professional writers who can help you write any of your homework. They will write your papers from scratch. We also have a team of editors just to make sure all papers are of HIGH QUALITY & PLAGIARISM FREE. To make an Order you only need to click Ask A Question and we will direct you to our Order Page at WriteDemy. Then fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Fill in all the assignment paper details that are required in the order form with the standard information being the page count, deadline, academic level and type of paper. It is advisable to have this information at hand so that you can quickly fill in the necessary information needed in the form for the essay writer to be immediately assigned to your writing project. Make payment for the custom essay order to enable us to assign a suitable writer to your order. Payments are made through Paypal on a secured billing page. Finally, sit back and relax.
About Writedemy
We are a professional paper writing website. If you have searched a question and bumped into our website just know you are in the right place to get help in your coursework. We offer HIGH QUALITY & PLAGIARISM FREE Papers.
How It Works
To make an Order you only need to click on “Order Now” and we will direct you to our Order Page. Fill Our Order Form with all your assignment instructions. Select your deadline and pay for your paper. You will get it few hours before your set deadline.
Are there Discounts?
All new clients are eligible for 20% off in their first Order. Our payment method is safe and secure.