Q. What is the primary function of enzymes in the human body?
-
A.
To provide energy
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B.
To catalyze biochemical reactions
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C.
To transport oxygen
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D.
To store nutrients
Solution
Enzymes act as catalysts that speed up biochemical reactions without being consumed in the process.
Correct Answer:
B
— To catalyze biochemical reactions
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Q. What is the primary goal of aeration in respiratory therapy?
-
A.
To increase blood pressure
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B.
To enhance oxygen delivery
-
C.
To reduce heart rate
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D.
To improve digestion
Solution
The primary goal of aeration in respiratory therapy is to enhance oxygen delivery to the patient.
Correct Answer:
B
— To enhance oxygen delivery
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Q. What is the primary goal of downstream processing in biopharmaceutical production?
-
A.
To enhance cell growth
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B.
To purify the product
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C.
To increase fermentation yield
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D.
To reduce production costs
Solution
The primary goal of downstream processing is to purify the product from the fermentation broth.
Correct Answer:
B
— To purify the product
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Q. What is the primary purpose of a fermentation reactor?
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A.
To produce antibiotics
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B.
To synthesize proteins
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C.
To facilitate microbial growth
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D.
To extract enzymes
Solution
Fermentation reactors are designed to facilitate microbial growth, allowing for the production of various bioproducts.
Correct Answer:
C
— To facilitate microbial growth
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Q. What is the primary purpose of agitation in a clinical setting?
-
A.
To increase patient comfort
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B.
To enhance drug solubility
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C.
To reduce patient anxiety
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D.
To improve blood circulation
Solution
Agitation is often used to enhance drug solubility, especially in intravenous medications.
Correct Answer:
B
— To enhance drug solubility
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Q. What is the primary purpose of bioreactors in biochemical engineering?
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A.
To purify proteins
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B.
To cultivate microorganisms
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C.
To synthesize chemical compounds
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D.
To analyze genetic material
Solution
Bioreactors are designed to provide a controlled environment for the cultivation of microorganisms, allowing for optimal growth and product formation.
Correct Answer:
B
— To cultivate microorganisms
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Q. What is the primary purpose of chlorination in water treatment?
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A.
To remove heavy metals
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B.
To kill bacteria and viruses
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C.
To improve taste and odor
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D.
To filter out sediments
Solution
Chlorination is primarily used to disinfect water by killing harmful microorganisms.
Correct Answer:
B
— To kill bacteria and viruses
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Q. What is the primary purpose of immobilizing enzymes?
-
A.
To increase their solubility
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B.
To enhance their stability and reusability
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C.
To decrease their activity
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D.
To change their substrate specificity
Solution
The primary purpose of immobilizing enzymes is to enhance their stability and reusability in various applications.
Correct Answer:
B
— To enhance their stability and reusability
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Q. What is the primary purpose of sterilization in a medical context?
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A.
To reduce the risk of infection
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B.
To enhance drug absorption
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C.
To improve patient comfort
-
D.
To increase surgical efficiency
Solution
Sterilization is primarily used to reduce the risk of infection by eliminating all forms of microbial life.
Correct Answer:
A
— To reduce the risk of infection
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Q. What is the primary substrate used in fermentation processes?
-
A.
Glucose
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B.
Lactate
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C.
Ethanol
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D.
Acetate
Solution
Glucose is the primary substrate for fermentation, as it is readily metabolized by many microorganisms.
Correct Answer:
A
— Glucose
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Q. What is the purpose of biological indicators in sterilization processes?
-
A.
To measure temperature
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B.
To confirm sterility
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C.
To assess chemical concentration
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D.
To monitor humidity levels
Solution
Biological indicators are used to confirm sterility by demonstrating that the sterilization process was effective.
Correct Answer:
B
— To confirm sterility
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Q. What is the purpose of buffer exchange in downstream processing?
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A.
To increase product yield
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B.
To remove contaminants
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C.
To adjust pH and ionic strength
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D.
To enhance solubility
Solution
Buffer exchange is performed to adjust pH and ionic strength for optimal conditions in subsequent purification steps.
Correct Answer:
C
— To adjust pH and ionic strength
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Q. What is the purpose of downstream processing in biochemical engineering?
-
A.
To enhance microbial growth
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B.
To extract and purify products
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C.
To modify genetic material
-
D.
To analyze metabolic pathways
Solution
Downstream processing involves extracting and purifying products from fermentation broths, making it essential for product recovery.
Correct Answer:
B
— To extract and purify products
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Q. What is the purpose of lyophilization in downstream processing?
-
A.
To purify proteins
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B.
To remove water from the product
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C.
To enhance product activity
-
D.
To increase product solubility
Solution
Lyophilization is used to remove water from the product, stabilizing it for long-term storage.
Correct Answer:
B
— To remove water from the product
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Q. What is the purpose of sedimentation in water treatment?
-
A.
To kill bacteria
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B.
To remove dissolved gases
-
C.
To allow heavier particles to settle
-
D.
To add minerals
Solution
Sedimentation allows heavier particles to settle at the bottom of a tank, clarifying the water.
Correct Answer:
C
— To allow heavier particles to settle
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Q. What is the recommended agitation technique for mixing blood products?
-
A.
Vigorous shaking
-
B.
Gentle inversion
-
C.
Rapid spinning
-
D.
Continuous stirring
Solution
Gentle inversion is the recommended technique to mix blood products without causing damage.
Correct Answer:
B
— Gentle inversion
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Q. What is the role of a bioreactor's agitator?
-
A.
To cool the reactor
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B.
To mix the contents
-
C.
To sterilize the medium
-
D.
To measure pH
Solution
The agitator's role is to mix the contents of the bioreactor, ensuring uniform distribution of nutrients and microorganisms.
Correct Answer:
B
— To mix the contents
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Q. What is the role of a carrier in enzyme immobilization?
-
A.
To increase enzyme activity
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B.
To provide a surface for enzyme attachment
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C.
To decrease reaction time
-
D.
To enhance substrate binding
Solution
The role of a carrier in enzyme immobilization is to provide a surface for enzyme attachment, facilitating the immobilization process.
Correct Answer:
B
— To provide a surface for enzyme attachment
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Q. What is the role of a fermenter in biochemical engineering?
-
A.
To separate products from cells
-
B.
To provide a controlled environment for fermentation
-
C.
To analyze metabolic pathways
-
D.
To synthesize DNA
Solution
A fermenter provides a controlled environment for fermentation, allowing microorganisms to convert substrates into desired products.
Correct Answer:
B
— To provide a controlled environment for fermentation
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Q. What is the role of activated carbon in water treatment?
-
A.
To add minerals
-
B.
To remove chlorine
-
C.
To adsorb organic compounds
-
D.
To increase pH
Solution
Activated carbon is used to adsorb organic compounds and improve water quality.
Correct Answer:
C
— To adsorb organic compounds
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Q. What is the role of chromatography in downstream processing?
-
A.
To kill microorganisms
-
B.
To concentrate the product
-
C.
To separate and purify biomolecules
-
D.
To enhance product stability
Solution
Chromatography is used to separate and purify biomolecules based on their properties.
Correct Answer:
C
— To separate and purify biomolecules
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Q. What is the role of coenzymes in enzymatic reactions?
-
A.
To inhibit enzyme activity
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B.
To provide additional energy
-
C.
To assist in substrate binding
-
D.
To stabilize the enzyme structure
Solution
Coenzymes are organic molecules that assist enzymes by helping to bind substrates and facilitate reactions.
Correct Answer:
C
— To assist in substrate binding
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Q. What is the role of cofactors in enzyme activity?
-
A.
To provide energy for the reaction
-
B.
To stabilize the enzyme structure
-
C.
To assist in the catalytic process
-
D.
To act as a substrate
Solution
Cofactors assist in the catalytic process by helping the enzyme to perform its function more effectively.
Correct Answer:
C
— To assist in the catalytic process
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Q. What is the role of enzymes in fermentation?
-
A.
Increase temperature
-
B.
Catalyze reactions
-
C.
Consume substrates
-
D.
Produce waste products
Solution
Enzymes catalyze biochemical reactions during fermentation, facilitating the conversion of substrates into products.
Correct Answer:
B
— Catalyze reactions
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Q. What is the role of ethylene oxide in sterilization?
-
A.
It is a disinfectant
-
B.
It is a sterilizing gas
-
C.
It is a cleaning agent
-
D.
It is a preservative
Solution
Ethylene oxide is a sterilizing gas used to sterilize heat-sensitive medical equipment.
Correct Answer:
B
— It is a sterilizing gas
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Q. What is the significance of metabolic engineering in biochemical engineering?
-
A.
To enhance the efficiency of metabolic pathways
-
B.
To create new microbial strains
-
C.
To improve product yield
-
D.
All of the above
Solution
Metabolic engineering is significant for enhancing the efficiency of metabolic pathways, creating new microbial strains, and improving product yield.
Correct Answer:
D
— All of the above
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Q. What is the significance of the 'maximum specific growth rate' in fermentation?
-
A.
Indicates the fastest growth rate
-
B.
Determines substrate concentration
-
C.
Measures product yield
-
D.
Indicates fermentation duration
Solution
The maximum specific growth rate indicates the fastest growth rate of microorganisms during fermentation under optimal conditions.
Correct Answer:
A
— Indicates the fastest growth rate
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Q. What is the term for the flow of fluid in layers, with no disruption between them?
-
A.
Turbulent flow
-
B.
Laminar flow
-
C.
Transitional flow
-
D.
Creeping flow
Solution
Laminar flow is characterized by fluid moving in parallel layers with minimal disruption between them.
Correct Answer:
B
— Laminar flow
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Q. What is the term for the maximum rate of an enzyme-catalyzed reaction?
-
A.
Vmax
-
B.
Km
-
C.
Turnover number
-
D.
Michaelis constant
Solution
Vmax is the maximum rate of an enzyme-catalyzed reaction when the enzyme is saturated with substrate.
Correct Answer:
A
— Vmax
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Q. What is the term for the region on the enzyme where the substrate binds?
-
A.
Active site
-
B.
Allosteric site
-
C.
Binding site
-
D.
Catalytic site
Solution
The active site is the region on the enzyme where the substrate binds and the reaction occurs.
Correct Answer:
A
— Active site
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Showing 31 to 60 of 103 (4 Pages)