Lab Practical #1 Flashcards
Name the 7 functional groups?
Hydroxyl
Carbonyl
Carboxyl
Amino
Phosphate
Methyl
Sulfhydryl
- What does the Sudan IV test test for?
- What is a positive result?
- What is a negative result?
- Lipid
- Red layer
- Pink tint
What are some characteristics of Cysteine?
3 carbon
1 amino group
1 amino group
1 Sulfhydryl group
OH stands for which functional group?
Hydroxyl
- What does the biuret test test for?
- What is a positive result?
- What is a negative result?
- Protein
- Dark blue - purple
- Light blue
What is the functional group of glucose?
Hydroxyl
C = O stands for what functional group?
Carbonyl
What 2 functional groups make up all amino acids?
Amino + carboxyl
What is the independent variable?
A variable that does not change
H2N stands for what functional group?
Amino
What is the formula for density?
Density = mass / volume
What is a dependent variable?
A variable that depends on other factors; changes
What situations would you use a water displacement test to find the volume of an object?
For an object that is not easily measurable. (Ex small rock)
SH stands for what functional group?
Sulfhydryl
What is the equation for finding mass?
Mass = volume x density
What is the purpose of a control group?
It is used as a comparison to the experimental group
What are some characteristics of Serine?
3 carbon
1 amino group
1 carboxyl group
- What does iodine test for?
- What is a positive result?
- What is a negative result?
- Starch
- Black
- Brown
- What does the Benedict’s test test for?
- What is a positive result?
- What is a negative result?
- Reducing sugars
- Green - red
- Blue
What are some distinct characteristics of Aspartic Acid?
4 carbon molecules
Amino group
2 carboxyl groups
What are some characteristics of Valine?
4 carbon
1 methyl group
1 amino group
1 carboxyl group
What are the 4 amino acids?
Valine
Serine
Cystine
Aspartic acid
