Q. Which medium is specifically designed for the culture of orchid tissues?
-
A.
Murashige and Skoog
-
B.
Gamborg's B5
-
C.
Orchid medium
-
D.
Nitsch and Nitsch
Solution
Orchid medium is specifically formulated to meet the unique nutritional requirements of orchid tissues.
Correct Answer:
C
— Orchid medium
Learn More →
Q. Which metabolic pathway is primarily responsible for the detoxification of ammonia in the liver?
-
A.
Glycolysis
-
B.
Urea cycle
-
C.
Krebs cycle
-
D.
Fatty acid oxidation
Solution
The urea cycle is primarily responsible for the detoxification of ammonia in the liver, converting it to urea.
Correct Answer:
B
— Urea cycle
Learn More →
Q. Which metabolic pathway is primarily used by bacteria to ferment glucose?
-
A.
Krebs cycle
-
B.
Glycolysis
-
C.
Electron transport chain
-
D.
Pentose phosphate pathway
Solution
Glycolysis is the primary pathway for glucose fermentation in bacteria.
Correct Answer:
B
— Glycolysis
Learn More →
Q. Which metabolic pathway occurs in the cytoplasm and breaks down glucose?
-
A.
Krebs cycle
-
B.
Glycolysis
-
C.
Electron transport chain
-
D.
Beta-oxidation
Solution
Glycolysis is the metabolic pathway that occurs in the cytoplasm and breaks down glucose.
Correct Answer:
B
— Glycolysis
Learn More →
Q. Which method can be used to determine the purity of a protein sample?
-
A.
Mass spectrometry
-
B.
Western blotting
-
C.
Both A and B
-
D.
None of the above
Solution
Both mass spectrometry and Western blotting can be used to assess the purity of a protein sample.
Correct Answer:
C
— Both A and B
Learn More →
Q. Which method is commonly used for sterilizing surgical instruments?
-
A.
Boiling water
-
B.
Chemical disinfection
-
C.
Autoclaving
-
D.
Ultraviolet light
Solution
Autoclaving is a widely used method for sterilizing surgical instruments, utilizing high-pressure steam.
Correct Answer:
C
— Autoclaving
Learn More →
Q. Which method is effective for removing pathogens from water?
-
A.
Boiling
-
B.
Fluoridation
-
C.
Chlorination
-
D.
Both boiling and chlorination
Solution
Both boiling and chlorination are effective methods for removing pathogens from water.
Correct Answer:
D
— Both boiling and chlorination
Learn More →
Q. Which microorganism is commonly used in alcoholic fermentation?
-
A.
Escherichia coli
-
B.
Saccharomyces cerevisiae
-
C.
Lactobacillus
-
D.
Bacillus subtilis
Solution
Saccharomyces cerevisiae, or baker's yeast, is widely used in alcoholic fermentation to produce ethanol.
Correct Answer:
B
— Saccharomyces cerevisiae
Learn More →
Q. Which microorganism is commonly used in the biological treatment of wastewater?
-
A.
Escherichia coli
-
B.
Bacillus subtilis
-
C.
Pseudomonas aeruginosa
-
D.
Activated sludge bacteria
Solution
Activated sludge bacteria are commonly used in the biological treatment of wastewater due to their ability to degrade organic matter.
Correct Answer:
D
— Activated sludge bacteria
Learn More →
Q. Which microorganism is commonly used in the production of penicillin?
-
A.
Bacillus subtilis
-
B.
Penicillium chrysogenum
-
C.
Escherichia coli
-
D.
Saccharomyces cerevisiae
Solution
Penicillium chrysogenum is the mold used to produce penicillin, an important antibiotic.
Correct Answer:
B
— Penicillium chrysogenum
Learn More →
Q. Which microorganism is known for causing botulism from improperly canned foods?
-
A.
Staphylococcus aureus
-
B.
Clostridium botulinum
-
C.
Bacillus cereus
-
D.
Listeria monocytogenes
Solution
Clostridium botulinum produces a potent toxin that can lead to botulism when ingested from improperly canned foods.
Correct Answer:
B
— Clostridium botulinum
Learn More →
Q. Which microorganism is known for causing malaria?
-
A.
Plasmodium
-
B.
Giardia
-
C.
E. coli
-
D.
Staphylococcus
Solution
Plasmodium is the protozoan parasite responsible for causing malaria, transmitted by Anopheles mosquitoes.
Correct Answer:
A
— Plasmodium
Learn More →
Q. Which microorganism is often associated with the treatment of high-strength industrial wastewater?
-
A.
Lactobacillus
-
B.
Methanogens
-
C.
Streptococcus
-
D.
Bifidobacterium
Solution
Methanogens are often associated with the treatment of high-strength industrial wastewater, particularly in anaerobic digestion processes.
Correct Answer:
B
— Methanogens
Learn More →
Q. Which microorganism is primarily responsible for the fermentation of soybeans to produce soy sauce?
-
A.
Aspergillus oryzae
-
B.
Lactobacillus
-
C.
Saccharomyces cerevisiae
-
D.
Bacillus subtilis
Solution
Aspergillus oryzae is used in the fermentation of soybeans to produce soy sauce.
Correct Answer:
A
— Aspergillus oryzae
Learn More →
Q. Which microorganism is responsible for causing malaria?
-
A.
Plasmodium falciparum
-
B.
Bacillus anthracis
-
C.
Clostridium botulinum
-
D.
Vibrio cholerae
Solution
Plasmodium falciparum is the most deadly species of the Plasmodium genus that causes malaria, transmitted by Anopheles mosquitoes.
Correct Answer:
A
— Plasmodium falciparum
Learn More →
Q. Which microorganism is responsible for the majority of urinary tract infections?
-
A.
Escherichia coli
-
B.
Staphylococcus aureus
-
C.
Streptococcus pneumoniae
-
D.
Candida albicans
Solution
Escherichia coli is the most common cause of urinary tract infections, accounting for about 80-90% of cases.
Correct Answer:
A
— Escherichia coli
Learn More →
Q. Which microorganism is used in the production of antibiotics other than penicillin?
-
A.
Streptomyces
-
B.
Bacillus
-
C.
Lactobacillus
-
D.
Clostridium
Solution
Streptomyces is a genus of bacteria known for producing a variety of antibiotics, including streptomycin.
Correct Answer:
A
— Streptomyces
Learn More →
Q. Which microorganism is used in the production of yogurt?
-
A.
Lactobacillus
-
B.
Salmonella
-
C.
Clostridium
-
D.
Bacillus anthracis
Solution
Lactobacillus is a type of bacteria used in the fermentation process to produce yogurt.
Correct Answer:
A
— Lactobacillus
Learn More →
Q. Which microorganism is utilized in the production of ethanol through fermentation?
-
A.
Lactobacillus
-
B.
Saccharomyces cerevisiae
-
C.
Clostridium acetobutylicum
-
D.
Aspergillus niger
Solution
Saccharomyces cerevisiae, or baker's yeast, is commonly used to ferment sugars into ethanol.
Correct Answer:
B
— Saccharomyces cerevisiae
Learn More →
Q. Which milk product is fermented to produce yogurt?
-
A.
Cream
-
B.
Skim milk
-
C.
Whole milk
-
D.
Milk with added cultures
Solution
Yogurt is made by fermenting milk with specific bacterial cultures that convert lactose into lactic acid.
Correct Answer:
D
— Milk with added cultures
Learn More →
Q. Which milk product is typically lower in calories?
-
A.
Whole milk
-
B.
2% milk
-
C.
Skim milk
-
D.
Cream
Solution
Skim milk has had most of its fat removed, making it lower in calories compared to whole and 2% milk.
Correct Answer:
C
— Skim milk
Learn More →
Q. Which mineral is a key antioxidant that helps protect cells from damage?
-
A.
Selenium
-
B.
Iron
-
C.
Copper
-
D.
Zinc
Solution
Selenium is an important antioxidant that helps protect cells from oxidative stress.
Correct Answer:
A
— Selenium
Learn More →
Q. Which mineral is crucial for maintaining healthy bones and teeth?
-
A.
Sodium
-
B.
Potassium
-
C.
Calcium
-
D.
Iron
Solution
Calcium is vital for the development and maintenance of strong bones and teeth.
Correct Answer:
C
— Calcium
Learn More →
Q. Which mineral is essential for the synthesis of collagen?
-
A.
Zinc
-
B.
Iron
-
C.
Calcium
-
D.
Sodium
Solution
Zinc is important for collagen synthesis, which is vital for skin, bone, and connective tissue health.
Correct Answer:
A
— Zinc
Learn More →
Q. Which mineral is important for nerve transmission?
-
A.
Calcium
-
B.
Iron
-
C.
Potassium
-
D.
Sodium
Solution
Potassium is essential for nerve transmission and helps maintain proper nerve function.
Correct Answer:
C
— Potassium
Learn More →
Q. Which mineral is important for thyroid hormone production?
-
A.
Iodine
-
B.
Zinc
-
C.
Calcium
-
D.
Magnesium
Solution
Iodine is necessary for the synthesis of thyroid hormones, which regulate metabolism.
Correct Answer:
A
— Iodine
Learn More →
Q. Which mineral is vital for oxygen transport in the blood?
-
A.
Calcium
-
B.
Iron
-
C.
Potassium
-
D.
Sodium
Solution
Iron is a key component of hemoglobin, which binds to oxygen in red blood cells for transport throughout the body.
Correct Answer:
B
— Iron
Learn More →
Q. Which mold is known for producing aflatoxins, potent carcinogens?
-
A.
Aspergillus flavus
-
B.
Penicillium notatum
-
C.
Rhizopus oryzae
-
D.
Cladosporium herbarum
Solution
Aspergillus flavus is known for producing aflatoxins, which are highly toxic and carcinogenic.
Correct Answer:
A
— Aspergillus flavus
Learn More →
Q. Which molecule acts as the electron carrier in glycolysis?
-
A.
NAD+
-
B.
FAD
-
C.
CoA
-
D.
ATP
Solution
NAD+ acts as the electron carrier, being reduced to NADH during glycolysis.
Correct Answer:
A
— NAD+
Learn More →
Q. Which molecule carries amino acids to the ribosome during translation?
-
A.
mRNA
-
B.
tRNA
-
C.
rRNA
-
D.
DNA
Solution
tRNA (transfer RNA) carries amino acids to the ribosome during translation.
Correct Answer:
B
— tRNA
Learn More →
Showing 1141 to 1170 of 1754 (59 Pages)