Advanced Food Microbiology Quiz

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| By Kenneth.ovia

Kenneth.ovia

Community Contributor

Quizzes Created: 3 | Total Attempts: 1,811

Questions: 10 | Attempts: 882 | Updated: Dec 28, 2023

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Microbiology is the science that deals with microorganisms. Play this advanced food microbiology quiz to test your conceptual and factual knowledge about the subject. The quiz contains questions ranging from easy, medium, and hard levels that will help you increase your knowledge base. The quiz would be highly beneficial for your last-minute revision too. If you find the informative quiz, do share it with your friends and peers. All the best!

Questions and Answers

1.

Microbial attachment to food surface is necessary to offer protection from ----------
- A.
  
  Microorganisms
- B.
  
  Spoilage
- C.
  
  Environmental stress
- D.
  
  Diseases
Correct Answer
C. Environmental stress

Explanation
Microbial attachment to food surfaces is necessary to offer protection from environmental stress. Environmental stress refers to any adverse conditions in the environment that can negatively impact microbial survival and growth. By attaching to food surfaces, microorganisms can form biofilms, which provide a protective barrier against environmental stressors such as temperature fluctuations, pH changes, and exposure to antimicrobial agents. This attachment allows microorganisms to better withstand and adapt to the challenging conditions, increasing their chances of survival and persistence on the food surface.

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2.

The bacteria responsible for the formation of curd is?
- A.
  
  Lactobacillus
- B.
  
  Staphylococcus
- C.
  
  Staphylococcus
- D.
  
  Clostridium
Correct Answer
A. Lactobacillus

Explanation
Lactobacillus is the correct answer because it is a type of bacteria that is commonly used in the production of curd. It is a lactic acid bacteria that ferments lactose present in milk, converting it into lactic acid. This acidification process causes the milk to curdle and form curd. Lactobacillus is known for its ability to produce enzymes that break down lactose, making it an essential component in the curd-making process. Staphylococcus and Clostridium are not typically involved in curd formation.

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3.

Formic acid is found in?
- A.
  
  Ants
- B.
  
  Butter
- C.
  
  Apple
- D.
  
  Mango
Correct Answer
A. Ants

Explanation
Formic acid is found in ants. Ants produce formic acid as a defense mechanism against predators. When threatened, ants release formic acid from their bodies, which acts as a deterrent or irritant to potential threats. This acid is responsible for the characteristic odor that is often associated with ants. Therefore, it can be concluded that formic acid is found in ants.

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4.

The final stage of respiration when ATP is formed through a series of electron transfer is----------
- A.
  
  Glycolysis
- B.
  
  Oxidative phosphorylation
- C.
  
  Pyruvic acid
- D.
  
  Glucose
Correct Answer
B. Oxidative pHospHorylation

Explanation
Oxidative phosphorylation is the correct answer because it is the final stage of respiration where ATP is formed through a series of electron transfer. During this process, electrons from NADH and FADH2 are passed through the electron transport chain, creating a proton gradient across the inner mitochondrial membrane. This proton gradient is then used by ATP synthase to produce ATP from ADP and inorganic phosphate. Therefore, oxidative phosphorylation is the stage where the majority of ATP is generated in cellular respiration.

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5.

Microbes obtain energy and nutrients for the need to live and reproduce by ----------
- A.
  
  Anabolism
- B.
  
  Catabolism
- C.
  
  Microbial metabolism
- D.
  
  Autotrophy
Correct Answer
C. Microbial metabolism

Explanation
Microbial metabolism refers to the biochemical processes that occur within microorganisms to obtain energy and nutrients necessary for their survival and reproduction. This includes both anabolism, which involves the synthesis of complex molecules from simpler ones, and catabolism, which involves the breakdown of complex molecules into simpler ones to release energy. Therefore, microbial metabolism encompasses the overall metabolic activities of microbes, allowing them to fulfill their energy and nutrient requirements.

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6.

Heat and high pressure are examples of ---------- while acid and salt are examples of ----------
- A.
  
  Physical and chemical
- B.
  
  Starvation and cold stress
- C.
  
  Microbial response and environmental stress
- D.
  
  Starvation and cold stress
- E.
  
  Oxidation and ACD stress
Correct Answer
A. pHysical and chemical

Explanation
Heat and high pressure are examples of physical stressors, while acid and salt are examples of chemical stressors. Physical stressors refer to external forces that can cause changes in the physical properties of an organism, such as temperature or pressure. Chemical stressors, on the other hand, refer to substances or compounds that can disrupt the chemical balance within an organism, such as acids or salts.

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7.

---------- and ---------- are the methods organisms obtain carbon from CO₂and organic compound, for synthesizing cell mass.
- A.
  
  Chemotrophic and phototrophic
- B.
  
  Lititrophic and mixotrophic
- C.
  
  Photosynthesis and respiration
- D.
  
  Autotropic and heterotropic
Correct Answer
D. Autotropic and heterotropic

Explanation
Autotrophic organisms obtain carbon from CO2 and synthesize cell mass through photosynthesis, where they convert sunlight into energy. Heterotrophic organisms obtain carbon from organic compounds and synthesize cell mass through respiration, where they break down organic molecules to release energy.

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8.

What is the end product of Glycolysis?
- A.
  
  Pyruvate
- B.
  
  Glucose
- C.
  
  Carbon
- D.
  
  None of the above
Correct Answer
A. Pyruvate

Explanation
Glycolysis is the metabolic pathway that converts glucose into pyruvate. During this process, glucose is broken down into two molecules of pyruvate, along with the production of ATP and NADH. Pyruvate is then further metabolized in the presence of oxygen to produce more ATP through the Krebs cycle and oxidative phosphorylation. Therefore, the end product of glycolysis is pyruvate.

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9.

Maleic acid is found in
- A.
  
  Grapes
- B.
  
  Mango
- C.
  
  Apple
- D.
  
  Butter
Correct Answer
A. Grapes

Explanation
Maleic acid is found in grapes. Grapes contain a high amount of tartaric acid, which can be converted into maleic acid through a process called malolactic fermentation. This fermentation occurs naturally in grapes and is responsible for the smooth and balanced taste in wines. Therefore, grapes are a natural source of maleic acid.

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10.

Tartaric Acid is found in
- A.
  
  Apple
- B.
  
  Banana
- C.
  
  Grapes
- D.
  
  Cauliflower
Correct Answer
A. Apple

Explanation
Tartaric acid is found in apple. This acid is a naturally occurring compound that gives a sour taste to certain fruits, including apples. It is commonly used in the food industry as a flavoring agent and as a preservative. Tartaric acid can also be found in grapes, but it is more abundant in apples. Bananas and cauliflower do not contain tartaric acid.

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Current Version
Dec 28, 2023

Quiz Edited by
ProProfs Editorial Team
Jul 22, 2020

Quiz Created by
Kenneth.ovia

Advanced Food Microbiology Quiz

Microbial attachment to food surface is necessary to offer protection from ----------

The bacteria responsible for the formation of curd is?

Formic acid is found in?

The final stage of respiration when ATP is formed through a series of electron transfer is----------

Microbes obtain energy and nutrients for the need to live and reproduce by ----------

Heat and high pressure are examples of ---------- while acid and salt are examples of ----------

---------- and ---------- are the methods organisms obtain carbon from CO2 and organic compound, for synthesizing cell mass.

What is the end product of Glycolysis?

Maleic acid is found in

Tartaric Acid is found in

---------- and ---------- are the methods organisms obtain carbon from CO₂and organic compound, for synthesizing cell mass.