Dissimılatory nitrate reduction carried out by bacteria can lead to loss of nitrogen as N2 from the environment. A) O True B) O False

Q: Which of the following requires aerobic conditions?   Question 7 options:   A)  nitrogen fixation…

A: Two basic stages in the treatment of wastes - primary and secondary In the primary stage, solids are…

Q: By what phosphate pollution is caused?

A: The excessive dumping of nutrients in the environment is known as nutrient pollution and it is a…

Q: Define nitrogen fixation. What organisms are capable of nitrogen fixation?

A: Nitrohen fixation is a biochemical process for the utilization of atmospheric nitrogen gas. The…

Q: A batch reactor was initially filled with organic substrate (S0) with an equivalent concentration of…

A: Bioreactor is the equipment used for the production of biomass. Cells consume substrate and multiply…

Q: Most human bacterial pathogens are labeled as __ according to their temperature requirement: a)…

A: Microorganisms known as mesophiles thrive in habitats with moderate temperatures, often between 20°C…

Q: Advanced treatment is often designed to removea) BOD.b) nitrates and phosphates.c) bacteria.d)…

A: Water that is contaminated due to human use converted into waste one which contains physical,…

Q: Which of the media types would predict is used to detect possible fecal contamination of water in…

A: The fecal contamination of water in Puget sound comes from sources like marine effluent discharge,…

Q: What is lithotrophy? A) O the breakdown of molecules using light energy B) O the oxidation of…

A: A lithotroph is an organism that uses inorganic substrates as a source of electron donors to drive…

Q: Which of the following is not a matching pair?a) Potable water—presence of pathogensb) High BOD—high…

A: Filamentous bulking refers to the uncontrolled growth of filamentous bacteria. Primary treatment…

Q: a) What is the consequence of discharging larger volumes of sewage that is untreated into a river?…

A: Introduction: Wastewater treatment has been used for a variety of purposes such as removing the…

Q: Which of the following methods of control kills the microbe? a) incineration b) desiccation c)…

A: Introduction Microorganisms are referred to as that organism that is single-celled and can only be…

Q: If an organism feeds on dead or dying organisms that this mode of feeding is called: a) Heterotroph…

A: Some living organisms eat decaying and dead organisms. They convert complicated organic matter into…

Q: A) What are the main reasons of food poisoning?

A: As per our guidelines, we are supposed to answer only one question. Kindly repost the other question…

Q: In fixed-bed leaching, how it can be leached please mention one or two only.

A: Asked : Fixed-bed leaching

Q: Commercial canning processes are designed to ensure destructionof which of the following?a) All…

A: The process of canning is performed to eradicate the harmful pathogens from the packed food. The raw…

Q: retort pouch is: a) Filled first with food product and then retorted (heat-sterilization) to extend…

A: In retort pouch food is filled into a pouch . Then it sealed and next heated to extremely high…

Q: What is a generally minimum pH for growth and toxin production by Clostridium botulinum and other…

A: Clostridium botulinum is a Gram-positive, rod-shaped, anaerobic, spore-forming, motile bacteria that…

Q: Botulism is cause by an: a)Rickettsia b)Aneorobic spore forming bacteria c)Gram negative…

A: Botulism is not common  but a serious disease. Botulism can be transmitted through contaminated…

Q: c) ) Explain why too much nitrogen in pond water is problematic?

A: Nutrients, like nitrogen, are fundamental for plant development and sustenance, however the excess…

Q: Identify the microorganism/ group of microorganisms involved in the spoilage of the following food:…

A: Spoilage of food products causes great harm to the manufacturer and also to the people consuming it…

Q: If you read that coliforms had been found in a lake, the report could have been referring to which…

A: Coliforms cover a broad group of microorganisms that are present in the environment. They are…

Q: Which of the following species of microbe is associated withbeing a good indicator of fecal…

A: The correct answer is (e) Salmonella typhi

Q: A) Explain in detail about landfill system

A: A) Landfill is an open region based on the highest point of the ground to arrange the trash. It is…

Q: Which process converts ammonium (NH4+ ) into nitrate (NO3− )?a) Nitrogen fixationb) Ammonificationc)…

A: Nitrite removal is even easier, with nitrite being oxidized by the enzyme nitrite oxidoreductase and…

Q: Microbes have their biggest impact in which step of wastewater treatment? A) O preliminary B) O…

A: Wastewater treatment as the term suggests is the treatment of the sewage water in order to eliminate…

Q: (i) Discuss the spoilage processes by determining THREE (3) potential intrinsic factors that are…

A: Meat is rich in protein, and fat, and is a very nutritious food. It is obtained from various sources…

Q: Which of the following could be an effect of an excess ofsewage running into a freshwater…

A: Due to the contamination of fresh water by sewage all of the above can takes place.

Q: Which of these statements is/are TRUE? A) In general, species that can grow at higher temperatures…

A: Microorganisms or microbes are microscopic organisms that exist as unicellular, multicellular, or…

Q: Which micronutrient is added last during Parenteral Nutrition (PN) compounding as it shortens the…

A: In the context of compounding Parenteral Nutrition (PN), the addition of various micronutrients is a…

Q: What does the term alkaline reserve refer to and what is its role?

A: The term alkaline refers to any solution which has a pH which is above 7 (neutral). Alkaline…

Q: Which of the following formulas are correct regarding productivity? (recall, GPP gross primary…

A: Gross primary productivity It is the total amount of carbon compounds produced by a plant in an…

Q: Which of the following is a nitrogenous waste product that is rarely the final product eliminated by…

A: Kidneys are the organs belong to excretory system in our body and play a major role in several other…

Q: a) What is the consequence of discharging larger volumes of sewage that is untreated into a river?…

A: INTRODUCTION Sewage is the waste that contains liquid and solid wastes produced by human activities…

Q: 32) A) To improve human health with the help of living organisms such as bacteria B) To clean up…

A: Bioremediation is of 3 types  Microbial bioremediation ( use of bacteria, algae, fungi etc.)…

Q: Strict anaerobes cannot live in the presnece of oxgyen because: a.)they have to mitochondria…

A: Cell biology is the investigation of cell design and capacity, and it spins around the idea that the…

Q: Explain the difference between assimilatory nitrate reduction and dissimilatory nitrate reduction.

A: Introduction  Bacteria are single-celled microorganisms that belong to the kingdom Monera. They are…

Q: Name the secondary pollutant.

A: Pollution is introduction of any substance which causes undesirable disturbances in the environment/…

Q: Your microorganism produce black color in peptone iron agar grown at 37 degrees Celcius…

A: Enzymes are the biological catalysts that have the ability to increase the rate of metabolic…

Q: What is the role of these organisms in the Winogradsky column and what are the physical indications…

A: The Winogradsky column is a synthetic microbial environment and a reliable source of different…

Q: What is the Carbon content of Cast Irons? Group of answer choices a) Less than 2% b) More than 2% c)…

A: Cast iron is an alloy of carbon and iron. It has relatively lower melting temperature and was used…

Q: Which of these factors does not affect enzyme activity?a) Temperatureb) Inhibitorsc) Coenzymesd)…

A: Enzymes are proteins that aid in the speeding up of the bodies' metabolism, or chemical reactions.…

Q: Microaerophiles A) O do not require oxygen for growth B) O are the same as facultative anaerobes C)…

A: Oxygen requirements of bacteria reflect the mechanism used by them, to fulfill their energy needs.…

Q: Leachate production is what

A: A leachate is any liquid that, extracts soluble or suspended solids from the material through which…

Q: Which percentage of medical waste is infectious or hazardous? A) 25% B)50% C)75% D) 85%

A: Medical wastes are wastes that are generated by healthcare activities that put people at increased…

Q: ) There are some liability and compensation regimes for oil pollution: i)State two of these regimes…

A: Oil pollution is a serious environmental issue. There are various liability and compensation regimes…

Environmental Microbiology

Environmental biology deals with the study of microorganisms and their interaction with their surroundings. This term itself covers the microbial interactions with water, soil, air, and microbial too.