Solutions and dilutions
What are the two things a solution is made of? (2pts)
Solvent and solute
What is an enzyme? (2pts)
Protein that catalyze reactions
What is fermentation? (2pts)
A metabolic process that converts sugar to acids, gases and/or alcohol.
What is the purpose of writing a lab report? (2pts)
To inform people of what you did and what you found during a lab so that it can be repeated
What is the Zoom meeting password we use each week? (2pts)
Bio125
What is a simple dilution? (2pts)
A unit volume of a liquid material of interest is combined with an appropriate volume of a solvent liquid to achieve the desired concentration.
How can you measure enzyme activity? (2pts)
Spectrophotometery/absorbance
What is produced as a byproduct during fermentation? (2pts)
CO2
What are the 7 sections of a lab report? (2pts)
Title, abstract, introduction, materials and methods, results, discussion and conclusions, works cited
What lab are you in? (2pts)
Bio 125
What does "C" stand for in C1V1=C2V2? (3pts)
Concentration
Where are enzymes found? (3pts)
Everywhere: soil, cells, stomach
Where does fermentation occur naturally? (3pts)
Bacteria, yeast, muscle cells lacking oxygen
What information belongs in the abstract section? (3pts)
An introductory sentence, the main methods used, the main findings, brief interpretation of the findings.
What section of Bio 125 lab section are you in? Bio 125-__? (3pts)
Bio 125-43
What does V2 stand for in C1V1=C2V2? (4pts)
The volume needed to get a certain concentration, which is C2
What were the optimal conditions (pH and temperature) for enzyme activity in our virtual lab? (4 pts)
Temperature = 70, pH = 9
In our virtual lab, what were the materials in each of the 3 flasks that did not ferment? (4pts)
Yeast and cold water
Boiling water, glucose and yeast
Glucose and cold water
What is the proper way to cite information in a lab report? (4pts)
Reword the information. Place the authors and year at the end of the sentence in parentheses > (author, year) OR state the author's name in the sentence and put the year in parentheses directly after the name > according to author (year)....
How is my last name spelled? (4pts)
Prochaska
How do you make a serial dilution? (5pts)
By adding previously diluted reagents to another solution (i.e. adding 5mL of glucose solution to 5ml of water (creating a dilution) and then taking 5mL of that solution and adding it to 5 mL of water and so on)
During our virtual enzyme lab, why did the enzyme activity increase as temperature increased, but then began to decrease after a certain temperature? (5pts)
At a certain temperature, enzymes begin to denature which makes them less active
In our virtual lab, what materials were in the two flasks that fermented and which one produced more CO2? (5pts)
Cold water, glucose and yeast*
Cold water, flour and yeast
What is the proper way to format a figure within the text of a lab report? (5pts)
Place the figure in the text. Label the figure "Figure #." followed by a brief description. You should always refer to the figure in the text.
How is my last name pronounced? (5pts)
PRO - HASKA ; "c" is silent