Q. What is the minimum temperature and time required for effective steam sterilization in an autoclave?
A.
121°C for 15 minutes
B.
100°C for 30 minutes
C.
134°C for 10 minutes
D.
150°C for 5 minutes
Show solution
Solution
The minimum temperature and time for effective steam sterilization in an autoclave is 121°C for 15 minutes.
Correct Answer:
A
— 121°C for 15 minutes
Learn More →
Q. What is the most common blood type in humans?
Show solution
Solution
The most common blood type in humans is O.
Correct Answer:
D
— O
Learn More →
Q. What is the most common cause of acute pancreatitis?
A.
Alcohol consumption
B.
Gallstones
C.
High-fat diet
D.
Diabetes
Show solution
Solution
The most common cause of acute pancreatitis is alcohol consumption.
Correct Answer:
B
— Gallstones
Learn More →
Q. What is the most common cause of foodborne illness in the United States?
A.
Salmonella
B.
E. coli
C.
Listeria
D.
Norovirus
Show solution
Solution
Norovirus is the leading cause of foodborne illness outbreaks in the U.S.
Correct Answer:
D
— Norovirus
Learn More →
Q. What is the most common laboratory method used to identify Mycobacterium tuberculosis?
A.
Gram stain
B.
Acid-fast bacilli stain
C.
Culture on blood agar
D.
PCR amplification
Show solution
Solution
The acid-fast bacilli stain is the most common laboratory method used to identify Mycobacterium tuberculosis due to its unique cell wall properties.
Correct Answer:
B
— Acid-fast bacilli stain
Learn More →
Q. What is the most common type of lung cancer associated with smoking?
A.
Adenocarcinoma
B.
Squamous cell carcinoma
C.
Small cell carcinoma
D.
Large cell carcinoma
Show solution
Solution
Squamous cell carcinoma is the most common lung cancer type associated with smoking.
Correct Answer:
B
— Squamous cell carcinoma
Learn More →
Q. What is the most common type of lung cancer?
A.
Small cell lung cancer
B.
Non-small cell lung cancer
C.
Mesothelioma
D.
Lung carcinoid tumor
Show solution
Solution
Non-small cell lung cancer (NSCLC) is the most common type of lung cancer, accounting for approximately 85% of cases.
Correct Answer:
B
— Non-small cell lung cancer
Learn More →
Q. What is the most effective way to prevent Hepatitis A infection?
A.
Regular hand washing
B.
Vaccination
C.
Avoiding alcohol
D.
Using condoms
Show solution
Solution
Vaccination is the most effective way to prevent Hepatitis A infection.
Correct Answer:
B
— Vaccination
Learn More →
Q. What is the name of the heart's natural pacemaker?
A.
Atrioventricular node
B.
Sinoatrial node
C.
Bundle of His
D.
Purkinje fibers
Show solution
Solution
The sinoatrial (SA) node is known as the heart's natural pacemaker, initiating the electrical impulses that regulate heartbeats.
Correct Answer:
B
— Sinoatrial node
Learn More →
Q. What is the net ATP yield from one molecule of glucose during glycolysis?
A.
2 ATP
B.
4 ATP
C.
6 ATP
D.
0 ATP
Show solution
Solution
The net yield of ATP from glycolysis is 2 ATP per molecule of glucose.
Correct Answer:
A
— 2 ATP
Learn More →
Q. What is the normal range for adult human body temperature?
A.
35.0 - 36.5 °C
B.
36.5 - 37.5 °C
C.
37.5 - 38.5 °C
D.
38.5 - 39.5 °C
Show solution
Solution
The normal range for adult human body temperature is typically considered to be between 36.5 and 37.5 °C.
Correct Answer:
B
— 36.5 - 37.5 °C
Learn More →
Q. What is the normal range for arterial blood pH?
A.
6.8 - 7.2
B.
7.35 - 7.45
C.
7.0 - 7.5
D.
7.5 - 8.0
Show solution
Solution
The normal range for arterial blood pH is 7.35 to 7.45, which is crucial for proper physiological function.
Correct Answer:
B
— 7.35 - 7.45
Learn More →
Q. What is the normal range for resting heart rate in adults?
A.
40-60 beats per minute
B.
60-100 beats per minute
C.
100-120 beats per minute
D.
120-140 beats per minute
Show solution
Solution
The normal resting heart rate for adults typically ranges from 60 to 100 beats per minute.
Correct Answer:
B
— 60-100 beats per minute
Learn More →
Q. What is the normal range of respiratory rate for a healthy adult at rest?
A.
5-10 breaths per minute
B.
12-20 breaths per minute
C.
20-30 breaths per minute
D.
30-40 breaths per minute
Show solution
Solution
The normal respiratory rate for a healthy adult at rest is typically between 12 and 20 breaths per minute.
Correct Answer:
B
— 12-20 breaths per minute
Learn More →
Q. What is the optimal pH range for most bacteria to grow?
A.
1-3
B.
4-6
C.
6-8
D.
9-11
Show solution
Solution
Most bacteria grow optimally in a pH range of 6-8.
Correct Answer:
C
— 6-8
Learn More →
Q. What is the pH of human blood?
A.
6.8-7.2
B.
7.35-7.45
C.
7.5-7.8
D.
8.0-8.5
Show solution
Solution
The normal pH range of human blood is 7.35 to 7.45.
Correct Answer:
B
— 7.35-7.45
Learn More →
Q. What is the pH range of pure water at 25°C?
A.
0-3
B.
4-6
C.
7
D.
8-10
Show solution
Solution
Pure water has a neutral pH of 7 at 25°C.
Correct Answer:
C
— 7
Learn More →
Q. What is the pKa of the carboxyl group in amino acids?
A.
Around 2
B.
Around 7
C.
Around 9
D.
Around 12
Show solution
Solution
The pKa of the carboxyl group in amino acids is typically around 2, indicating its acidic nature.
Correct Answer:
A
— Around 2
Learn More →
Q. What is the primary action of aldosterone?
A.
Increase sodium reabsorption
B.
Decrease potassium levels
C.
Increase water retention
D.
All of the above
Show solution
Solution
Aldosterone increases sodium reabsorption in the kidneys, which also leads to increased water retention and decreased potassium levels.
Correct Answer:
D
— All of the above
Learn More →
Q. What is the primary action of calcium channel blockers?
A.
Increase heart rate
B.
Decrease myocardial oxygen demand
C.
Increase blood pressure
D.
Enhance insulin secretion
Show solution
Solution
Calcium channel blockers primarily decrease myocardial oxygen demand by reducing contractility and heart rate.
Correct Answer:
B
— Decrease myocardial oxygen demand
Learn More →
Q. What is the primary action of cortisol in the body?
A.
Promotes inflammation
B.
Increases blood glucose levels
C.
Stimulates insulin secretion
D.
Decreases protein synthesis
Show solution
Solution
Cortisol is a glucocorticoid hormone that increases blood glucose levels by promoting gluconeogenesis and inhibiting glucose uptake in non-target tissues.
Correct Answer:
B
— Increases blood glucose levels
Learn More →
Q. What is the primary action of the triceps brachii muscle?
A.
Flexion of the elbow
B.
Extension of the elbow
C.
Abduction of the shoulder
D.
Adduction of the shoulder
Show solution
Solution
The primary action of the triceps brachii muscle is the extension of the elbow.
Correct Answer:
B
— Extension of the elbow
Learn More →
Q. What is the primary active component in vinegar that contributes to its acidity?
A.
Acetic acid
B.
Citric acid
C.
Lactic acid
D.
Formic acid
Show solution
Solution
Vinegar primarily contains acetic acid, which gives it its characteristic sour taste and acidity.
Correct Answer:
A
— Acetic acid
Learn More →
Q. What is the primary advantage of using biosensors in clinical diagnostics?
A.
High specificity and sensitivity
B.
Low cost of production
C.
Ease of use
D.
Long shelf life
Show solution
Solution
Biosensors offer high specificity and sensitivity, making them valuable tools for accurate clinical diagnostics.
Correct Answer:
A
— High specificity and sensitivity
Learn More →
Q. What is the primary application of UV luminance spectroscopy in clinical settings?
A.
Detecting bacterial infections
B.
Measuring blood glucose levels
C.
Analyzing protein structures
D.
Assessing skin damage from UV exposure
Show solution
Solution
UV luminance spectroscopy is primarily used to assess skin damage from UV exposure, helping to evaluate the risk of skin cancer.
Correct Answer:
D
— Assessing skin damage from UV exposure
Learn More →
Q. What is the primary bacterium responsible for foodborne illness associated with undercooked poultry?
A.
Escherichia coli
B.
Salmonella
C.
Listeria monocytogenes
D.
Clostridium perfringens
Show solution
Solution
Salmonella is commonly found in undercooked poultry and is a leading cause of foodborne illness.
Correct Answer:
B
— Salmonella
Learn More →
Q. What is the primary barrier to drug absorption in the gastrointestinal tract?
A.
Mucosal layer
B.
Epithelial cells
C.
Blood-brain barrier
D.
Liver metabolism
Show solution
Solution
The primary barrier to drug absorption in the gastrointestinal tract is the epithelial cells that line the gut, which must be crossed for absorption to occur.
Correct Answer:
B
— Epithelial cells
Learn More →
Q. What is the primary benefit of consuming nuts?
A.
High in carbohydrates
B.
Rich in protein
C.
Source of healthy fats
D.
Low in calories
Show solution
Solution
Nuts are a great source of healthy fats, which are important for heart health.
Correct Answer:
C
— Source of healthy fats
Learn More →
Q. What is the primary benefit of eating cruciferous vegetables?
A.
High in calories
B.
Rich in fiber
C.
Low in nutrients
D.
High in sugar
Show solution
Solution
Cruciferous vegetables, like broccoli and kale, are rich in fiber, which aids in digestion and promotes gut health.
Correct Answer:
B
— Rich in fiber
Learn More →
Q. What is the primary benefit of synthetic seeds in agriculture?
A.
Increased genetic diversity
B.
Uniformity in plant characteristics
C.
Higher nutritional value
D.
Faster growth rates
Show solution
Solution
Synthetic seeds provide uniformity in plant characteristics, which is beneficial for commercial agriculture.
Correct Answer:
B
— Uniformity in plant characteristics
Learn More →
Showing 331 to 360 of 1754 (59 Pages)