Podcast
Questions and Answers
What is the first step in collecting a clean catch urine sample for males?
What is the first step in collecting a clean catch urine sample for males?
- Pee a small amount into the toilet.
- Hold the specimen cup below the penis.
- Finish peeing into the toilet.
- Use a sterile wipe to clean the head of the penis. (correct)
What should the urine specific gravity (SG) of urine ideally be when compared to that of pure water?
What should the urine specific gravity (SG) of urine ideally be when compared to that of pure water?
- 1.002
- 1.000 (correct)
- 1.035
- 1.015
Which of the following describes the specific gravity test?
Which of the following describes the specific gravity test?
- A measurement comparing urine concentration against that of pure water. (correct)
- A test indicating the presence of blood in urine.
- A test conducted to determine urine pH levels.
- An assessment primarily for checking specific chemical solutes.
If a male cannot fill the specimen cup halfway, what is the next step recommended?
If a male cannot fill the specimen cup halfway, what is the next step recommended?
How do healthcare providers collect a urine sample using a catheter?
How do healthcare providers collect a urine sample using a catheter?
What does a urine specific gravity of 1.035 indicate?
What does a urine specific gravity of 1.035 indicate?
For which of the following chemical tests is a concentrated morning urine specimen considered best?
For which of the following chemical tests is a concentrated morning urine specimen considered best?
Which substance is NOT commonly tested for using reagent test strips?
Which substance is NOT commonly tested for using reagent test strips?
Which dietary choices are likely to make urine more acidic?
Which dietary choices are likely to make urine more acidic?
What condition can cause an increased pH level in urine?
What condition can cause an increased pH level in urine?
What is proteinuria an early sign of?
What is proteinuria an early sign of?
Which substance is typically detected first in urine during kidney dysfunction?
Which substance is typically detected first in urine during kidney dysfunction?
Which of the following statements about glucose in urine is correct?
Which of the following statements about glucose in urine is correct?
Which of the following conditions could lead to protein levels being elevated in urine?
Which of the following conditions could lead to protein levels being elevated in urine?
What process can help in reducing the formation of kidney stones related to urine pH?
What process can help in reducing the formation of kidney stones related to urine pH?
Which situation can lead to glucosuria?
Which situation can lead to glucosuria?
What is the primary cause of enzymatic browning in fruits and vegetables?
What is the primary cause of enzymatic browning in fruits and vegetables?
Which of the following fruits is least likely to undergo enzymatic browning?
Which of the following fruits is least likely to undergo enzymatic browning?
What role do phenolic compounds play in the process of enzymatic browning?
What role do phenolic compounds play in the process of enzymatic browning?
What is a potential detrimental effect of enzymatic browning on fruits?
What is a potential detrimental effect of enzymatic browning on fruits?
Which of the following is a benefit of enzymatic browning?
Which of the following is a benefit of enzymatic browning?
Which of these processes typically results in undesirable browning?
Which of these processes typically results in undesirable browning?
What type of browning contributes positively to the flavor and aroma of baked goods?
What type of browning contributes positively to the flavor and aroma of baked goods?
Which factor is essential for the occurrence of enzymatic browning?
Which factor is essential for the occurrence of enzymatic browning?
How does the ripening process of fruit affect its mineral content?
How does the ripening process of fruit affect its mineral content?
Which test is NOT typically included in a routine urinalysis?
Which test is NOT typically included in a routine urinalysis?
What does a healthcare professional assess during the visual exam of urine?
What does a healthcare professional assess during the visual exam of urine?
What change occurs in the texture of bananas as they ripen?
What change occurs in the texture of bananas as they ripen?
What do dipsticks test for in a urine sample?
What do dipsticks test for in a urine sample?
Which of the following describes the possible color range of normal urine?
Which of the following describes the possible color range of normal urine?
What does the degree of color change on a dipstick test pad indicate?
What does the degree of color change on a dipstick test pad indicate?
Why might someone need a urinalysis?
Why might someone need a urinalysis?
Which method is NOT utilized to prevent enzymatic browning?
Which method is NOT utilized to prevent enzymatic browning?
What effect does blanching have in the process of preventing enzymatic browning?
What effect does blanching have in the process of preventing enzymatic browning?
Which of the following describes a characteristic of caramelization?
Which of the following describes a characteristic of caramelization?
Which reaction is responsible for the development of flavor and aroma in baked goods?
Which reaction is responsible for the development of flavor and aroma in baked goods?
What is the role of inert gases like nitrogen in preventing enzymatic browning?
What is the role of inert gases like nitrogen in preventing enzymatic browning?
The Maillard reaction primarily involves which compound interactions?
The Maillard reaction primarily involves which compound interactions?
What type of chemical process is non-enzymatic browning?
What type of chemical process is non-enzymatic browning?
During caramelization, which temperature range is typically associated with the onset of sugar browning?
During caramelization, which temperature range is typically associated with the onset of sugar browning?
What does a low or absent urobilinogen level indicate in the presence of urine bilirubin?
What does a low or absent urobilinogen level indicate in the presence of urine bilirubin?
Which of the following is a normal value for urine bilirubin?
Which of the following is a normal value for urine bilirubin?
In which condition would a positive urine bilirubin test be most significant?
In which condition would a positive urine bilirubin test be most significant?
What is the normal range for urine pH?
What is the normal range for urine pH?
What does a normal urinalysis result for glucose indicate?
What does a normal urinalysis result for glucose indicate?
Flashcards
Enzymatic browning
Enzymatic browning
A chemical process involving enzymes that cause fruits and vegetables to turn brown.
Oxidative browning
Oxidative browning
Another term for enzymatic browning, focusing on the oxidation reaction.
Phenolic compounds
Phenolic compounds
Substances in fruits and vegetables that cause enzymatic browning and play a key role in the process.
Polyphenol oxidase
Polyphenol oxidase
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Browning
Browning
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Cellular Disruption
Cellular Disruption
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Benefits of Enzymatic Browning
Benefits of Enzymatic Browning
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Browning in food
Browning in food
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What is the effect of acids on enzymatic browning?
What is the effect of acids on enzymatic browning?
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How does blanching prevent browning?
How does blanching prevent browning?
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How does low temperature prevent browning?
How does low temperature prevent browning?
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Non-enzymatic Browning
Non-enzymatic Browning
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Caramelization
Caramelization
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Maillard Reaction
Maillard Reaction
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What are two examples of non-enzymatic browning?
What are two examples of non-enzymatic browning?
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Urinalysis
Urinalysis
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Visual Exam (Urinalysis)
Visual Exam (Urinalysis)
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Reagent Strip (Dipstick)
Reagent Strip (Dipstick)
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Color of Urine
Color of Urine
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Clarity of Urine
Clarity of Urine
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pH of Urine
pH of Urine
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Glucose in Urine
Glucose in Urine
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Protein in Urine
Protein in Urine
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Urine Specific Gravity
Urine Specific Gravity
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Urine pH
Urine pH
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Urine Protein
Urine Protein
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Urine Glucose
Urine Glucose
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Urine Ketones
Urine Ketones
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Urine Blood
Urine Blood
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Urine Leukocyte Esterase
Urine Leukocyte Esterase
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Urine Nitrite
Urine Nitrite
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Kidney Stones
Kidney Stones
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Albumin
Albumin
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Proteinuria
Proteinuria
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Glucosuria
Glucosuria
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Uncontrolled Diabetes
Uncontrolled Diabetes
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Urobilinogen in Urine
Urobilinogen in Urine
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Low Urobilinogen
Low Urobilinogen
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What does a positive test for urine bilirubin indicate?
What does a positive test for urine bilirubin indicate?
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What does a urine dipstick test measure?
What does a urine dipstick test measure?
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Clear vs. Cloudy Urine
Clear vs. Cloudy Urine
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Study Notes
Fruit Browning
- Browning is the process of becoming brown, particularly in food.
- Browning can be desirable (caramelization) or undesirable (e.g., an apple turning brown after being cut).
- Browning occurs during food pre-preparation, processing, and storage.
- Browning colors can range from cream/pale yellow to dark brown/black, depending on the food and the reaction extent.
- Desirable browning contributes to food's aroma, flavor, and color (e.g., bread crust, potato chips).
Types of Browning
A. Enzymatic Browning (Oxidative Browning)
- A chemical process involving enzymes (polyphenol oxidase, catechol oxidase).
- Creates melanin and benzoquinone from phenols, resulting in a brown color.
- Caused by oxidation reactions with exposure to oxygen.
- Disruption of cellular organization (e.g., cutting, bruising) releases enzymes, which oxidize phenolic compounds.
- Light-colored fruits and vegetables darken when exposed to air due to oxidative enzymes.
- Examples: apples, bananas, pears, brinjals, and potatoes.
B. Non-Enzymatic Browning
- A chemical process that produces brown color in food without enzyme activity.
- Two forms: caramelization and Maillard reaction.
- Caramelization: Sugar heating (160°C) in the absence of water and amino acids produces compounds through intense heat resulting in characteristic caramel flavor and color.
- Maillard reaction: A protein-sugar interaction (reaction between amino acids and reducing sugars) that usually requires heat to produce brown color and flavor. Factors affecting the reaction include sugar type, amino acid type, temperature, and moisture.
- Example: The crust of brioche bread.
Benefits of Browning
- Developing flavor in tea
- Developing color and flavor in dried fruits (e.g., figs, raisins)
- Other desirable effects on flavors and colors of food
Preventing Enzymatic Browning
- Low temperatures reduce reaction rate
- Blanching/roasting denatures enzymes and destroys reactants
- Inert gases (like nitrogen) prevent oxygen reaction
- Using chemicals (e.g., sodium bisulfite, citrates)
- Adding lemon juice or other acids lowers pH and removes necessary cofactors.
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