WorksheetsProteins Lab Quiz
Total questions: 35
Worksheet time: 16mins
Protein found in milk
Casein
Bean protein
Myoglobin
Gluten
Protein found in egg
Gluten
Albumin
Bean protein
Casein
Protein found in flour
Albumin
Myoglobin
Gluten
Casein
The hydrophilic portion of casein
Alpha casein
Beta casein
Kappa casein
Omega casein
It is the pH at which an amino acid solution has no net charge because an equal number of positive and negative charges are present
Isoelectric point
Dielectric constant
Acidic pH
Basic pH
Gluten is a mixture of two proteins, _______ and gliadin
Glutein
Glutenin
Gluten
Glutin
Test used to check the removal of starch
Protein test
Iodine test
Sodium test
Phosphorous test
This test gives red positive reaction, indicating the presence of arginine.
Biuret test
Lieberman test
Millon's test
Sakaguchi test
This test gives red color, indicating the presence of cysteine.
Xanthoproteic test
Sodium nitroprusside
Hopkin's cole
Ninhydrin test
This test gives flesh to red or brick red complex with mercurous nitrate in HNO3, indicating the presence of AA with phenol group and Tyrosine
Lead acetate test
Sakaguchi test
Millon's test
Pauly diazo test
This test gives black precipitate, indicating the presence of methionine, cysteine, cystine
Sullivan test
Biuret test
Lead acetate test
Sakaguchi test
This test gives deep blue color to violet or purple, indicating the presence of free amino group.
Millon's test
Biuret test
Follin's reaction test
Ninhydrin test
This type of protein hydrolysis is used to determine the presence of tryptophan
Acid hydrolysis
Alkaline hydrolysis
Enzymatic hydrolysis
This type of protein hydrolysis is used to determine the presence of glutamine and asparagine.
Acid hydrolysis
Alkaline hydrolysis
Enzymatic hydrolysis
This type of protein hydrolysis is used to determine the presence of cystine, cysteine, methionine, and tyrosine.
Acid hydrolysis
Alkaline hydrolysis
Enzymatic hydrolysis
It is the matted mass of heated flocculated protein
Flocculation
Coagulation
The following are denaturing agents of proteins, EXCEPT
Heat
Ultraviolet radiation
Reducing agents
Water
The following describes tannic acid, EXCEPT
used as an oral medicine for leukorrhea
has astrigent effects
used as flavoring agents
orally and topically used for bleeding, chronic diarrhea, dysentery, bloody urine, painful joints, persistent coughs, and cancer.
The best concentration of alcohol in order to have a greater germicidal effect
50%
40%
70%
95%
Product formed by catalase - H202 reaction
Water + oxygen bubbles
Water + catalase
catalase + oxygen bubbles
oxygen bubbles + hydrogen peroxide
The region of an enzyme where substrate molecules bind and undergo a chemical reaction.
Energetic site
Active Site
Construction site
Substrate site
Indicator used in amylase test
Amylase solution
Iodine solution
NaCl solution
Starch solution
Enzyme responsible for hydrolyzing starch
Amylase
Catalase
Bromelain
Papain
Optimum temperature for the enzymes.
37 degrees celsius
42 degrees celsius
15 degrees celsius
39 degrees celsius
Chemical formula for Hydrogen peroxide
H2O2
H20
CO2
COOH
Used of starch in the amylase test
Enzyme
Activator
Indicator
Substrate
Meaning of TCA
Tricarbonic Acid
Take Care Always
Trichloroacetic acid
Tricarboxylic acid
Observable result when hydrogen peroxide was added to the liver extract
Formation of bubbles
Formation of cake
Formation of balloons
Formation of liver
The following are the uses of papain except:
For parasitic worms
For Inflammation
Meat tenderizers
None of the choices
Salivary amylase works best at
6.7 - 7.0
5.3 - 5.5
7.7 - 8.0
7.4 - 7.7
Iodine color if there is presence of glucose
Blue Black complex
Yellow red
Green
Pink
Percent of starch used in amylase test
5%
1%
6%
3%
An increase in temperature results in :
Increase in speed of enzyme activity
Increase in concentration of enzyme for enzymatic activity
Decrease in the velocity of the reaction
Inhibition of enzyme substrate interaction
All of the choices
Enzyme used for destruction of agua oxigenada
Catalase
Amylase
Bromelain
Papain
Buffer solutions were maintained at what temperature?
37 degrees celsius
38 degrees celsius
37 degrees fahrenheit
38 degrees fahrenheit
