Q. What type of fermentation is primarily anaerobic?
A.
Lactic acid fermentation
B.
Alcoholic fermentation
C.
Acetic acid fermentation
D.
All of the above
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Solution
All of the listed fermentation types (lactic acid, alcoholic, and acetic acid) are primarily anaerobic processes.
Correct Answer:
D
— All of the above
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Q. Which chemical is commonly added to drinking water to prevent tooth decay?
A.
Chlorine
B.
Fluoride
C.
Sodium
D.
Calcium
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Solution
Fluoride is commonly added to drinking water to help prevent tooth decay.
Correct Answer:
B
— Fluoride
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Q. Which downstream processing step is typically performed last?
A.
Filtration
B.
Chromatography
C.
Formulation
D.
Lyophilization
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Solution
Lyophilization is typically performed last to stabilize the final product for storage.
Correct Answer:
D
— Lyophilization
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Q. Which enzyme is commonly used in the treatment of pancreatitis?
A.
Amylase
B.
Lipase
C.
Trypsin
D.
Chymotrypsin
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Solution
Lipase is often used in the treatment of pancreatitis to help digest fats when the pancreas is not functioning properly.
Correct Answer:
B
— Lipase
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Q. Which enzyme is responsible for breaking down lactose into glucose and galactose?
A.
Amylase
B.
Lactase
C.
Protease
D.
Lipase
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Solution
Lactase is the enzyme that catalyzes the hydrolysis of lactose into glucose and galactose.
Correct Answer:
B
— Lactase
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Q. Which factor does NOT affect enzyme activity?
A.
Temperature
B.
pH
C.
Substrate concentration
D.
Color of the enzyme
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Solution
The color of the enzyme does not affect its activity; however, temperature, pH, and substrate concentration do.
Correct Answer:
D
— Color of the enzyme
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Q. Which factor does NOT affect the viscosity of blood?
A.
Temperature
B.
Hematocrit level
C.
Blood vessel length
D.
Plasma protein concentration
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Solution
Blood vessel length does not affect the viscosity of blood; viscosity is influenced by temperature, hematocrit level, and plasma protein concentration.
Correct Answer:
C
— Blood vessel length
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Q. Which factor does NOT significantly affect fermentation rate?
A.
Temperature
B.
pH
C.
Oxygen concentration
D.
Color of the substrate
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Solution
The color of the substrate does not significantly affect fermentation rate, while temperature, pH, and oxygen concentration do.
Correct Answer:
D
— Color of the substrate
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Q. Which law describes the relationship between pressure, volume, and flow rate in a fluid?
A.
Bernoulli's principle
B.
Ohm's law
C.
Poiseuille's law
D.
Fick's law
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Solution
Poiseuille's law describes the relationship between pressure, volume, and flow rate in a fluid, particularly in laminar flow.
Correct Answer:
C
— Poiseuille's law
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Q. Which method is commonly used for sterilizing surgical instruments?
A.
Boiling water
B.
Chemical disinfection
C.
Autoclaving
D.
Ultraviolet light
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Solution
Autoclaving is a widely used method for sterilizing surgical instruments, utilizing high-pressure steam.
Correct Answer:
C
— Autoclaving
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Q. Which method is effective for removing pathogens from water?
A.
Boiling
B.
Fluoridation
C.
Chlorination
D.
Both boiling and chlorination
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Solution
Both boiling and chlorination are effective methods for removing pathogens from water.
Correct Answer:
D
— Both boiling and chlorination
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Q. Which microorganism is commonly used in alcoholic fermentation?
A.
Escherichia coli
B.
Saccharomyces cerevisiae
C.
Lactobacillus
D.
Bacillus subtilis
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Solution
Saccharomyces cerevisiae, or baker's yeast, is widely used in alcoholic fermentation to produce ethanol.
Correct Answer:
B
— Saccharomyces cerevisiae
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Q. Which of the following conditions can lead to increased blood viscosity?
A.
Dehydration
B.
Hyperhydration
C.
Low hematocrit
D.
Increased temperature
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Solution
Dehydration can lead to increased blood viscosity due to a higher concentration of cells and proteins in the plasma.
Correct Answer:
A
— Dehydration
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Q. Which of the following conditions may require increased aeration?
A.
Hypertension
B.
Asthma
C.
Diabetes
D.
Anemia
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Solution
Asthma often requires increased aeration to ensure adequate oxygen delivery to the lungs.
Correct Answer:
B
— Asthma
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Q. Which of the following factors can affect enzyme activity?
A.
pH levels
B.
Temperature
C.
Substrate concentration
D.
All of the above
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Solution
All of the listed factors can influence enzyme activity by affecting the enzyme's structure and function.
Correct Answer:
D
— All of the above
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Q. Which of the following is a byproduct of alcoholic fermentation?
A.
Lactic acid
B.
Ethanol
C.
Acetic acid
D.
Carbon dioxide
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Solution
Carbon dioxide is a byproduct of alcoholic fermentation, along with ethanol.
Correct Answer:
D
— Carbon dioxide
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Q. Which of the following is a common application of enzymes in industry?
A.
Baking
B.
Textile processing
C.
Biofuel production
D.
All of the above
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Solution
Enzymes are widely used in various industries, including baking, textile processing, and biofuel production, for their catalytic properties.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common challenge in downstream processing?
A.
High product yield
B.
Contamination
C.
Low operational costs
D.
Rapid processing times
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Solution
Contamination is a common challenge in downstream processing that can affect product quality.
Correct Answer:
B
— Contamination
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Q. Which of the following is a common indicator of water quality?
A.
pH level
B.
Color
C.
Temperature
D.
All of the above
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Solution
pH level, color, and temperature are all common indicators of water quality.
Correct Answer:
D
— All of the above
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Q. Which of the following is a common method for enzyme immobilization?
A.
Gel filtration
B.
Covalent bonding
C.
Dialysis
D.
Precipitation
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Solution
Covalent bonding is a common method for immobilizing enzymes, allowing them to remain attached to a support while retaining activity.
Correct Answer:
B
— Covalent bonding
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Q. Which of the following is a common method for immobilizing enzymes in biochemical processes?
A.
Gel filtration
B.
Affinity chromatography
C.
Covalent bonding
D.
Ultrafiltration
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Solution
Covalent bonding is a common method used to immobilize enzymes, enhancing their stability and reusability in biochemical processes.
Correct Answer:
C
— Covalent bonding
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Q. Which of the following is a common method for protein concentration?
A.
Dialysis
B.
Ultrafiltration
C.
Lyophilization
D.
Precipitation
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Solution
Ultrafiltration is a common method used for concentrating proteins in downstream processing.
Correct Answer:
B
— Ultrafiltration
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Q. Which of the following is a common method of aeration in medical procedures?
A.
Ultrasonic nebulization
B.
Manual ventilation
C.
Oxygen therapy
D.
Suctioning
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Solution
Ultrasonic nebulization is a common method of aeration that helps deliver medication in aerosol form.
Correct Answer:
A
— Ultrasonic nebulization
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Q. Which of the following is a common substrate used in fermentation?
A.
Glucose
B.
Oxygen
C.
Nitrogen
D.
Carbon dioxide
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Solution
Glucose is a common substrate used in fermentation processes as it serves as a primary energy source for microorganisms.
Correct Answer:
A
— Glucose
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Q. Which of the following is a disadvantage of immobilized enzymes?
A.
Increased stability
B.
Higher operational costs
C.
Reduced enzyme activity
D.
Easier handling
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Solution
A disadvantage of immobilized enzymes can be reduced enzyme activity due to steric hindrance or changes in the enzyme's conformation.
Correct Answer:
C
— Reduced enzyme activity
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Q. Which of the following is a key factor in optimizing fermentation processes?
A.
Temperature control
B.
pH adjustment
C.
Nutrient supply
D.
All of the above
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Solution
All of the above factors—temperature control, pH adjustment, and nutrient supply—are crucial for optimizing fermentation processes.
Correct Answer:
D
— All of the above
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Q. Which of the following is a sign of inadequate aeration?
A.
Increased heart rate
B.
Cyanosis
C.
Elevated blood pressure
D.
Improved lung sounds
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Solution
Cyanosis is a sign of inadequate aeration, indicating insufficient oxygenation of the blood.
Correct Answer:
B
— Cyanosis
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Q. Which of the following is an example of a coenzyme?
A.
Zinc
B.
Magnesium
C.
NAD+
D.
Calcium
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Solution
NAD+ is a coenzyme that plays a crucial role in redox reactions in metabolism.
Correct Answer:
C
— NAD+
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Q. Which of the following is NOT a common application of fermentation reactors?
A.
Beer production
B.
Insulin production
C.
Plastic manufacturing
D.
Yogurt production
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Solution
Plastic manufacturing is not a common application of fermentation reactors, which are primarily used for biological processes.
Correct Answer:
C
— Plastic manufacturing
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Q. Which of the following is NOT a factor affecting the activity of immobilized enzymes?
A.
pH
B.
Temperature
C.
Enzyme concentration
D.
Support material
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Solution
While pH, temperature, and support material affect the activity of immobilized enzymes, enzyme concentration is typically controlled in the reaction mixture.
Correct Answer:
C
— Enzyme concentration
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