Q. Which of the following is a characteristic of wind-pollinated plants?
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A.
Brightly colored flowers
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B.
Strong fragrance
-
C.
Large amounts of lightweight pollen
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D.
Nectar production
Solution
Wind-pollinated plants typically produce large amounts of lightweight pollen to increase the chances of successful pollination.
Correct Answer: C — Large amounts of lightweight pollen
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Q. Which of the following is a common application of biotechnology in agriculture?
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A.
Creating ornamental plants
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B.
Developing drought-resistant crops
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C.
Enhancing soil fertility
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D.
Increasing plant height
Solution
Developing drought-resistant crops is a significant application of biotechnology in agriculture, helping to ensure food security in arid regions.
Correct Answer: B — Developing drought-resistant crops
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Q. Which of the following is a common application of biotechnology in forestry?
-
A.
Creating ornamental plants
-
B.
Developing pest-resistant tree species
-
C.
Enhancing leaf color
-
D.
Increasing tree height
Solution
Biotechnology is often used in forestry to develop pest-resistant tree species, helping to protect forests from invasive pests.
Correct Answer: B — Developing pest-resistant tree species
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Q. Which of the following is a common application of cloning in biotechnology?
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A.
Gene therapy
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B.
DNA sequencing
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C.
Protein purification
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D.
All of the above
Solution
Cloning is used in various applications, including gene therapy, DNA sequencing, and protein purification.
Correct Answer: D — All of the above
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Q. Which of the following is a common application of disinfection in healthcare?
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A.
Sterilizing surgical instruments
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B.
Cleaning surfaces in patient rooms
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C.
Preparing culture media
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D.
Vaccination preparation
Solution
Disinfection is commonly applied to clean surfaces in patient rooms to reduce the risk of infection.
Correct Answer: B — Cleaning surfaces in patient rooms
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Q. Which of the following is a common application of PCR?
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A.
Gene therapy
-
B.
Forensic analysis
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C.
Protein purification
-
D.
Cell culture
Solution
PCR is widely used in forensic analysis to amplify DNA from crime scene samples for identification.
Correct Answer: B — Forensic analysis
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Q. Which of the following is a common application of plant biotechnology in environmental management?
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A.
Creating ornamental plants
-
B.
Bioremediation of contaminated soils
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C.
Increasing crop resistance to drought
-
D.
Enhancing flavor profiles of fruits
Solution
Bioremediation of contaminated soils is a common application of plant biotechnology, using plants to clean up environmental pollutants.
Correct Answer: B — Bioremediation of contaminated soils
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Q. Which of the following is a common application of recombinant DNA technology?
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A.
Gene therapy
-
B.
Antibiotic production
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C.
Plant breeding
-
D.
All of the above
Solution
Recombinant DNA technology is used in gene therapy, antibiotic production, and plant breeding.
Correct Answer: D — All of the above
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Q. Which of the following is a common application of sterilization in laboratories?
-
A.
Disinfecting countertops
-
B.
Sterilizing culture media
-
C.
Cleaning glassware
-
D.
Preparing vaccines
Solution
Sterilization is commonly applied to culture media in laboratories to ensure that no contaminants are present during microbial growth.
Correct Answer: B — Sterilizing culture media
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Q. Which of the following is a common cause of chronic obstructive pulmonary disease (COPD)?
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A.
Viral infections
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B.
Bacterial infections
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C.
Smoking
-
D.
Allergies
Solution
Smoking is the leading cause of chronic obstructive pulmonary disease (COPD), leading to long-term respiratory issues.
Correct Answer: C — Smoking
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Q. Which of the following is a common chemical agent used for disinfection?
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A.
Hydrogen peroxide
-
B.
Steam
-
C.
Radiation
-
D.
Incineration
Solution
Hydrogen peroxide is a common chemical disinfectant used to kill a wide range of microorganisms.
Correct Answer: A — Hydrogen peroxide
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Q. Which of the following is a common disorder of the digestive system?
-
A.
Diabetes
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B.
Asthma
-
C.
Irritable bowel syndrome
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D.
Hypertension
Solution
Irritable bowel syndrome (IBS) is a common disorder that affects the large intestine and causes symptoms like cramping and bloating.
Correct Answer: C — Irritable bowel syndrome
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Q. Which of the following is a common heart condition characterized by irregular heartbeat?
-
A.
Hypertension
-
B.
Arrhythmia
-
C.
Atherosclerosis
-
D.
Angina
Solution
Arrhythmia is a common heart condition characterized by an irregular heartbeat.
Correct Answer: B — Arrhythmia
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Q. Which of the following is a common indicator of sterilization effectiveness?
-
A.
Bacillus cereus spores
-
B.
Bacillus stearothermophilus spores
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C.
Escherichia coli
-
D.
Staphylococcus aureus
Solution
Bacillus stearothermophilus spores are commonly used as biological indicators for steam sterilization.
Correct Answer: B — Bacillus stearothermophilus spores
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Q. Which of the following is a common indicator organism used to test the efficacy of sterilization?
-
A.
Escherichia coli
-
B.
Bacillus subtilis
-
C.
Staphylococcus aureus
-
D.
Pseudomonas aeruginosa
Solution
Bacillus subtilis spores are commonly used as biological indicators to test the efficacy of sterilization processes.
Correct Answer: B — Bacillus subtilis
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Q. Which of the following is a common indicator used to verify the effectiveness of sterilization?
-
A.
Biological indicators
-
B.
Chemical indicators
-
C.
Physical indicators
-
D.
All of the above
Solution
All of the above types of indicators can be used to verify the effectiveness of sterilization processes.
Correct Answer: D — All of the above
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Q. Which of the following is a common laboratory method for diagnosing bacterial infections?
-
A.
PCR (Polymerase Chain Reaction)
-
B.
ELISA (Enzyme-Linked Immunosorbent Assay)
-
C.
Western blotting
-
D.
Flow cytometry
Solution
PCR is a widely used method for detecting bacterial DNA in clinical samples, allowing for rapid diagnosis of infections.
Correct Answer: A — PCR (Polymerase Chain Reaction)
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Q. Which of the following is a common laboratory test to assess immune function?
-
A.
Complete blood count (CBC)
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B.
Liver function test
-
C.
Skin prick test
-
D.
Urinalysis
Solution
The skin prick test is commonly used to assess allergic responses and evaluate immune function related to hypersensitivity.
Correct Answer: C — Skin prick test
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Q. Which of the following is a common method for introducing foreign DNA into plant cells?
-
A.
Electroporation
-
B.
Microinjection
-
C.
Gene gun
-
D.
All of the above
Solution
All of the above methods—electroporation, microinjection, and gene gun—are commonly used to introduce foreign DNA into plant cells.
Correct Answer: D — All of the above
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Q. Which of the following is a common method for testing the efficacy of sterilization?
-
A.
Biological indicators
-
B.
Chemical indicators
-
C.
Physical indicators
-
D.
All of the above
Solution
All of the above methods are used to test the efficacy of sterilization processes.
Correct Answer: D — All of the above
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Q. Which of the following is a common method of assisted reproductive technology?
-
A.
In vitro fertilization (IVF)
-
B.
Natural family planning
-
C.
Hormonal contraception
-
D.
Surgical sterilization
Solution
In vitro fertilization (IVF) is a widely used method of assisted reproductive technology.
Correct Answer: A — In vitro fertilization (IVF)
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Q. Which of the following is a common method of seed dispersal?
-
A.
Wind
-
B.
Photosynthesis
-
C.
Germination
-
D.
Transpiration
Solution
Wind is a common method of seed dispersal, allowing seeds to travel long distances from the parent plant.
Correct Answer: A — Wind
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Q. Which of the following is a common symptom of bacterial meningitis?
-
A.
Rash
-
B.
Fever
-
C.
Cough
-
D.
Diarrhea
Solution
Fever is a common symptom of bacterial meningitis, along with headache and stiff neck.
Correct Answer: B — Fever
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Q. Which of the following is a common symptom of respiratory distress?
-
A.
Nausea
-
B.
Shortness of breath
-
C.
Headache
-
D.
Fatigue
Solution
Shortness of breath is a common symptom of respiratory distress, indicating that the body is not receiving enough oxygen.
Correct Answer: B — Shortness of breath
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Q. Which of the following is a common symptom of respiratory infections?
-
A.
Increased appetite
-
B.
Shortness of breath
-
C.
Improved lung function
-
D.
Enhanced energy levels
Solution
Shortness of breath is a common symptom of respiratory infections, as they can obstruct airflow and reduce oxygen intake.
Correct Answer: B — Shortness of breath
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Q. Which of the following is a common use of alcohol in disinfection?
-
A.
Sterilizing surgical instruments
-
B.
Disinfecting skin before injections
-
C.
Cleaning surfaces in laboratories
-
D.
Preserving biological samples
Solution
Alcohol is commonly used to disinfect skin before injections due to its rapid antimicrobial action.
Correct Answer: B — Disinfecting skin before injections
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Q. Which of the following is a component of RNA but not DNA?
-
A.
Thymine
-
B.
Uracil
-
C.
Deoxyribose
-
D.
Adenine
Solution
RNA contains uracil instead of thymine, which is found in DNA.
Correct Answer: B — Uracil
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Q. Which of the following is a defining feature of reptiles?
-
A.
Moist skin
-
B.
Feathers
-
C.
Scales
-
D.
Live birth
Solution
Reptiles are characterized by their scaly skin, which helps prevent water loss in terrestrial environments.
Correct Answer: C — Scales
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Q. Which of the following is a disadvantage of using bleach as a disinfectant?
-
A.
It is ineffective against viruses
-
B.
It can corrode surfaces
-
C.
It is too expensive
-
D.
It requires long contact time
Solution
Bleach can corrode surfaces, which is a significant disadvantage when used as a disinfectant.
Correct Answer: B — It can corrode surfaces
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Q. Which of the following is a factor that affects the rate of transpiration?
-
A.
Soil pH
-
B.
Humidity
-
C.
Root depth
-
D.
Leaf color
Solution
Humidity affects the rate of transpiration; lower humidity increases transpiration rates due to a greater water vapor gradient.
Correct Answer: B — Humidity
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