Welcome to the Importance And Control Of Bacteria MDCAT MCQs with Answers. In this post, we have shared Importance And Control Of Bacteria Multiple Choice Questions and Answers for PMC MDCAT 2024. Each question in MDCAT Biology offers a chance to enhance your knowledge regarding Importance And Control Of Bacteria MCQs in this MDCAT Online Test.
Bacteria play an essential role in nitrogen fixation due to the presence of:
a) Ammonia
b) Nitrogenase enzyme
c) Carbon dioxide
d) Nitrate
Which bacteria are involved in the production of antibiotics?
a) Bacillus
b) Escherichia coli
c) Streptomyces
d) Staphylococcus
Bacteria that decompose dead organic matter are called:
a) Symbionts
b) Pathogens
c) Saprophytes
d) Parasites
The process of killing all forms of microbial life, including spores, is called:
a) Pasteurization
b) Disinfection
c) Sterilization
d) Antisepsis
Which of the following is a natural method to control bacteria?
a) Antibiotics
b) Ultraviolet radiation
c) High temperatures
d) Fermentation
The role of bacteria in the food industry includes:
a) Causing diseases
b) Spoiling food
c) Fermentation of dairy products
d) Digesting plastics
Which bacteria are commonly used in sewage treatment plants?
a) E. coli
b) Methanogens
c) Bacillus
d) Lactobacillus
Which of the following is a method of bacterial control using heat?
a) Pasteurization
b) Sterilization
c) Antibiotics
d) Disinfection
Bacteria help in the production of vitamin K in the:
a) Stomach
b) Intestine
c) Pancreas
d) Liver
Which bacterial process is essential for the nitrogen cycle?
a) Photosynthesis
b) Nitrogen fixation
c) Fermentation
d) Respiration
Antibiotics are primarily used to control:
a) Viruses
b) Fungi
c) Bacteria
d) Parasites
What is the role of bacteria in the carbon cycle?
a) Nitrogen fixation
b) Decomposition
c) Oxygen production
d) Antibiotic resistance
Which bacteria are involved in the fermentation of yogurt?
a) Streptococcus thermophilus
b) Bacillus anthracis
c) Clostridium tetani
d) Salmonella typhi
Autoclaving is a method used to control bacteria by using:
a) Ultraviolet rays
b) High heat and pressure
c) Antibiotics
d) Radiation
Which bacteria are responsible for producing methane in anaerobic conditions?
a) Methanogens
b) E. coli
c) Streptococcus
d) Bacillus
The use of chemical agents to destroy harmful bacteria on non-living objects is known as:
a) Sterilization
b) Disinfection
c) Pasteurization
d) Antibiotics
Which bacteria help in the production of vinegar through fermentation?
a) Acetobacter
b) Lactobacillus
c) Streptococcus
d) E. coli
Which term describes the complete elimination of all microorganisms?
a) Disinfection
b) Sterilization
c) Antisepsis
d) Pasteurization
Bacteria used in bioremediation to clean oil spills are called:
a) Pathogens
b) Probiotics
c) Hydrocarbonoclastic bacteria
d) Cyanobacteria
The process of using mild heat to kill harmful bacteria in liquids, such as milk, is known as:
a) Sterilization
b) Disinfection
c) Pasteurization
d) Antisepsis
Bacteria used to ferment soybeans in the production of soy sauce are:
a) Bacillus
b) Lactobacillus
c) Streptomyces
d) Acetobacter
Antibiotic resistance in bacteria is caused by:
a) Overuse of antibiotics
b) Lack of oxygen
c) Low temperature
d) Excessive UV radiation
The primary role of probiotics in the human body is to:
a) Cause diseases
b) Improve digestion and immune function
c) Break down toxins
d) Produce antibiotics
Which method uses radiation to sterilize medical instruments?
a) Pasteurization
b) Autoclaving
c) Ionizing radiation
d) Boiling
Bacteria are essential in the production of which of the following foods?
a) Bread
b) Yogurt
c) Rice
d) Fruits
Lactic acid bacteria are used in the production of:
a) Antibiotics
b) Yogurt
c) Vitamins
d) Hormones
Which bacteria can be used for biological control of pests?
a) Bacillus thuringiensis
b) Staphylococcus aureus
c) Escherichia coli
d) Clostridium botulinum
The method of controlling bacteria by using a high-pressure steam environment is called:
a) Disinfection
b) Sterilization
c) Pasteurization
d) Boiling
Bacteria that are beneficial to humans and help maintain gut health are known as:
a) Pathogens
b) Parasites
c) Probiotics
d) Antigens
Which of the following bacteria is used in the production of insulin through genetic engineering?
a) Escherichia coli
b) Streptococcus pyogenes
c) Mycobacterium tuberculosis
d) Bacillus subtilis
Bacteria used to produce cheese through fermentation are:
a) E. coli
b) Streptococcus
c) Lactobacillus
d) Bacillus
One of the most important functions of nitrogen-fixing bacteria is:
a) Carbon fixation
b) Nitrogen fixation
c) Protein synthesis
d) Oxygen production
The use of bacteria to degrade environmental pollutants is called:
a) Disinfection
b) Bioremediation
c) Sterilization
d) Fermentation
If you are interested to enhance your knowledge regarding Physics, Chemistry, Computer, and Biology please click on the link of each category, you will be redirected to dedicated website for each category.
