Q. What is a common allergen found in shellfish?
A.
Gluten
B.
Lactose
C.
Tropomyosin
D.
Casein
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Solution
Tropomyosin is a protein in shellfish that is a common allergen for many individuals.
Correct Answer:
C
— Tropomyosin
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Q. What is a common application of transgenic mice in research?
A.
Studying aging processes
B.
Testing new drugs
C.
Understanding genetic diseases
D.
All of the above
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Solution
Transgenic mice are used in various research applications, including studying aging processes, testing new drugs, and understanding genetic diseases.
Correct Answer:
D
— All of the above
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Q. What is a common challenge associated with using viral vectors in animal cell culture?
A.
Low transfection efficiency
B.
Immune response from the host
C.
High cost of production
D.
Limited insert size
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Solution
A significant challenge with viral vectors is the potential immune response from the host, which can limit their effectiveness.
Correct Answer:
B
— Immune response from the host
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Q. What is a common challenge in the synthesis of complex therapeutic agents?
A.
High yield
B.
Selectivity of reactions
C.
Cost-effectiveness
D.
Stability of intermediates
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Solution
Selectivity of reactions is a common challenge in synthesizing complex therapeutic agents.
Correct Answer:
B
— Selectivity of reactions
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Q. What is a common concern regarding transgenic plants?
A.
Increased biodiversity
B.
Potential for gene transfer to wild relatives
C.
Higher nutritional value
D.
Reduced pesticide use
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Solution
A common concern regarding transgenic plants is the potential for gene transfer to wild relatives, which could disrupt local ecosystems.
Correct Answer:
B
— Potential for gene transfer to wild relatives
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Q. What is a common consequence of a frameshift mutation?
A.
No effect on protein function
B.
A premature stop codon
C.
A single amino acid change
D.
Increased DNA replication speed
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Solution
A frameshift mutation often results in a premature stop codon, leading to truncated proteins.
Correct Answer:
B
— A premature stop codon
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Q. What is a common consequence of chromosomal abnormalities in animals?
A.
Increased lifespan
B.
Enhanced fertility
C.
Genetic disorders
D.
Improved immunity
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Solution
Chromosomal abnormalities can lead to genetic disorders, affecting the health and development of the affected animals.
Correct Answer:
C
— Genetic disorders
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Q. What is a common feature of Enterobacteriaceae?
A.
They are anaerobic bacteria.
B.
They ferment lactose.
C.
They are spore-forming.
D.
They are obligate parasites.
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Solution
Many Enterobacteriaceae can ferment lactose, which is a key characteristic.
Correct Answer:
B
— They ferment lactose.
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Q. What is a common feature of plasmid vectors used in animal cell culture?
A.
Ability to replicate independently
B.
Inability to carry antibiotic resistance genes
C.
Lack of a promoter region
D.
High molecular weight
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Solution
Plasmid vectors can replicate independently within the host cell, which is essential for gene cloning and expression.
Correct Answer:
A
— Ability to replicate independently
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Q. What is a common foodborne illness caused by Bacillus cereus?
A.
Botulism
B.
Salmonellosis
C.
Staphylococcal food poisoning
D.
Emetic toxin syndrome
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Solution
Bacillus cereus can cause emetic toxin syndrome, often associated with fried rice.
Correct Answer:
D
— Emetic toxin syndrome
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Q. What is a common laboratory method to identify Actinomycetes?
A.
Gram staining
B.
Acid-fast staining
C.
Culture on blood agar
D.
PCR amplification
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Solution
Gram staining is commonly used to identify Actinomycetes, which are typically Gram-positive.
Correct Answer:
A
— Gram staining
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Q. What is a common method by which aquatic microbes contribute to nutrient cycling?
A.
Photosynthesis
B.
Nitrogen fixation
C.
Fermentation
D.
Respiration
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Solution
Aquatic microbes, especially certain bacteria, contribute to nutrient cycling through nitrogen fixation, converting atmospheric nitrogen into forms usable by other organisms.
Correct Answer:
B
— Nitrogen fixation
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Q. What is a common method for sterilizing cell culture media?
A.
Autoclaving
B.
Filtration
C.
Chemical sterilization
D.
All of the above
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Solution
All of the listed methods can be used to sterilize cell culture media to prevent contamination.
Correct Answer:
D
— All of the above
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Q. What is a common microorganism used in fermentation processes?
A.
Escherichia coli
B.
Staphylococcus aureus
C.
Clostridium botulinum
D.
Bacillus anthracis
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Solution
Escherichia coli is commonly used in fermentation processes for protein production and genetic engineering.
Correct Answer:
A
— Escherichia coli
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Q. What is a common side effect of tetracycline antibiotics?
A.
Nausea
B.
Photosensitivity
C.
Diarrhea
D.
Rash
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Solution
Photosensitivity is a well-known side effect of tetracycline antibiotics.
Correct Answer:
B
— Photosensitivity
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Q. What is a common source of Streptococcus pneumoniae infection?
A.
Contaminated water
B.
Airborne droplets
C.
Foodborne transmission
D.
Vector-borne transmission
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Solution
Streptococcus pneumoniae is commonly transmitted through airborne droplets.
Correct Answer:
B
— Airborne droplets
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Q. What is a common symptom of acute hepatitis infection?
A.
Jaundice
B.
Weight gain
C.
Increased appetite
D.
Hair loss
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Solution
Jaundice, which is the yellowing of the skin and eyes, is a common symptom of acute hepatitis infection.
Correct Answer:
A
— Jaundice
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Q. What is a common symptom of obsessive-compulsive disorder (OCD)?
A.
Compulsive eating
B.
Repetitive hand washing
C.
Extreme shyness
D.
Chronic fatigue
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Solution
A common symptom of OCD is repetitive behaviors, such as excessive hand washing, driven by obsessive thoughts.
Correct Answer:
B
— Repetitive hand washing
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Q. What is a common symptom of rabies infection?
A.
Fever and chills
B.
Severe headache
C.
Hydrophobia
D.
Nausea and vomiting
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Solution
Hydrophobia, or fear of water, is a classic symptom of rabies due to spasms in the throat.
Correct Answer:
C
— Hydrophobia
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Q. What is a common treatment for attention-deficit/hyperactivity disorder (ADHD)?
A.
Antidepressants
B.
Stimulant medications
C.
Antipsychotics
D.
Mood stabilizers
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Solution
Stimulant medications are commonly used to treat ADHD by helping to increase attention and decrease impulsivity.
Correct Answer:
B
— Stimulant medications
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Q. What is a common treatment for viral infections?
A.
Antibiotics
B.
Antivirals
C.
Vaccines
D.
Surgery
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Solution
Antivirals are commonly used to treat certain viral infections.
Correct Answer:
B
— Antivirals
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Q. What is a common use of UV luminance spectroscopy in pharmaceuticals?
A.
Determining drug efficacy
B.
Analyzing drug stability
C.
Measuring drug absorption
D.
Identifying drug interactions
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Solution
In pharmaceuticals, UV luminance spectroscopy is commonly used to analyze drug stability, ensuring that medications remain effective over time.
Correct Answer:
B
— Analyzing drug stability
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A.
A complete antigen
B.
A small molecule that can elicit an immune response only when attached to a larger carrier
C.
A type of antibody
D.
A type of T cell
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Solution
A hapten is a small molecule that can elicit an immune response only when attached to a larger carrier.
Correct Answer:
B
— A small molecule that can elicit an immune response only when attached to a larger carrier
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Q. What is a key advantage of using microfluidic biochips?
A.
High cost
B.
Large sample volume
C.
Reduced reagent consumption
D.
Complex manufacturing process
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Solution
Microfluidic biochips allow for reduced reagent consumption by manipulating small volumes of fluids, making them cost-effective and efficient.
Correct Answer:
C
— Reduced reagent consumption
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Q. What is a key advantage of using yeast artificial chromosomes (YACs) as cloning vectors?
A.
Ability to clone large DNA fragments
B.
High transformation efficiency
C.
Low cost
D.
Simple construction
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Solution
Yeast artificial chromosomes (YACs) can clone large DNA fragments, making them useful for genomic studies.
Correct Answer:
A
— Ability to clone large DNA fragments
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Q. What is a key characteristic of Plesiomonas shigelloides?
A.
It is a Gram-positive bacterium
B.
It is primarily found in freshwater
C.
It causes respiratory infections
D.
It is resistant to all antibiotics
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Solution
Plesiomonas shigelloides is a Gram-negative bacterium commonly found in freshwater environments.
Correct Answer:
B
— It is primarily found in freshwater
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Q. What is a key characteristic of Pseudomonas aeruginosa?
A.
Gram-positive cocci
B.
Obligate anaerobe
C.
Produces a blue-green pigment
D.
Non-motile
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Solution
Pseudomonas aeruginosa is known for producing a blue-green pigment called pyocyanin.
Correct Answer:
C
— Produces a blue-green pigment
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Q. What is a major advantage of using synthetic seeds?
A.
They require more water
B.
They can be stored for longer periods
C.
They are more susceptible to diseases
D.
They are less expensive to produce
Show solution
Solution
Synthetic seeds can be stored for longer periods compared to traditional seeds, making them advantageous for agricultural use.
Correct Answer:
B
— They can be stored for longer periods
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Q. What is a major concern with the use of broad-spectrum antibiotics?
A.
Increased efficacy
B.
Narrowing of the spectrum
C.
Development of antibiotic resistance
D.
Reduced side effects
Show solution
Solution
Broad-spectrum antibiotics can lead to the development of antibiotic resistance.
Correct Answer:
C
— Development of antibiotic resistance
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A.
A type of virus
B.
A circular DNA molecule
C.
A protein structure
D.
A type of RNA
Show solution
Solution
A plasmid is a circular DNA molecule that is commonly used as a vector in recombinant DNA technology.
Correct Answer:
B
— A circular DNA molecule
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