osmosis are used in food preservation

Q: 1 (a)Why is the spectrophotometer set at 0.000 absorbance for the uninoculated tube of broth? (B)…

A: A spectrophotometer is an instrument that measures the number of photons (light intensity) absorbed…

Q: Which of the following is NOT a chemical method of microbial control? a) refrigeration b) ethyl…

A: In order to stop the spread of infections and diseases, microbes must be under control. Thereby…

Q: When hydrogen peroxide is placed on a colony of an unknown bacterium, bubbles form. Based on this…

A: Correct option is, (d) Is catalase-positive.

Q: List 5 physical factors required for bacterial growth.

A: An increase in the number of bacteria in a population is referred to as bacterial growth. It is the…

Q: Ch. 6: Water intoxication may be due to: a) administration of too much hypotonic solution b)…

A: Water is the liquid present in the cells. It has salts and other chemicals dissolved in it.

Q: Microbiology Exotoxins can be the following EXCEPT A) they are LPS/lipopolysacharride B) they are…

A: The substances produced by bacteria or any living organism which in contact with tissues can cause…

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: Describe the basic process of biofilm formation.

A: Biofilm refers to the collective growth of microorganisms on different surfaces. The microorganisms…

Q: equires oxygen at a lower concentration than typically found in air.   Question 3 options:   a)…

A: Throughout nature, aerobic and anaerobic environments can be found in diverse niches. These…

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: You perform a Gram staining technique on two bacterial species and observe that one is stained…

A: Gram staining is a technique used to differentiate between two groups of bacteria namely…

Q: In the exponential phase of microbial growth, Log cell numbers Time 1 1 1 1 1 1 I 1 1 a) net cell…

A: Microbial growth curveThe microbial growth curve shows the pattern of microbial growth.There are…

Q: What do the following terms mean? Detail the processes for each (eg how do you dilute something?)…

A: Dilution is the process of reducing the concentration of a substance in a solution by adding more…

Q: Which bacteria are inhibited from growing on eosin methylene blue (EMB) and agar? a)halophilic…

A: EOSIN METHYLENE BLUE  - eosin methylene blue is a selective strain for gram - negative bacteria . It…

Q: 3. We made 450 mL of 2.5% Luria Broth (LB) for our bacterial cultures. a) What is the final…

A: Every biological cell requires some kind of energy (nutrients) for its growth and development. For…

Q: 1)What is the natural color of cytoplasm? How is it related to our need to stain bacterial cells? 2)…

A: The staining techniques are used to identify the morphological characteristics along with the size…

Q: Explain the purpose and phase where cells lose flagella and motility in biofilm formation, and why…

A: There are several steps associated with the biofilm formation. The first step includes adherence of…

Q: Explain 2 factors that influence microbial growth.

A: The growth of microorganisms  are very much dependent on different factors that controls the growth…

Q: Diseases that involve biofilm-producing bacteria are of serious concern. They are not as easily…

A: A biofilm is thin but a robust layer of mucilage , adhered to a surface like human skin , tooth ,…

Q: Is the Peptone Iron Agar (PIA) a complex or defined medium? Explain based on its composition. Is the…

A: Depending on their composition, media can be classified as defined and undefined media. Defined…

Q: The following questions refer to membrane protein isolation A) What is the difficulty when working…

A: Proteins are considered biological, organic polymers made of amino acids. Amino acids are connected…

Q: ) = 80e−0.05t + 8(t + 1)−0.5. Her model says that C(t) is the number of coliform group bacteria…

A: If considering the equation C(t) = 80e−0.05t + 8(t + 1)−0.5  Time is zero initially then  C =…

Q: List four commercially important benefits of microorganisms.

A: 4 commercially important benefit of microorganisms are: Their role in food and beverages production…

Q: Describe how each of the following physical factors affect microbial growth and aid in…

A: Microbial growth It is defined as an enhancement in the number of cells of microbes. there are…

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: If the bacteria within your medium suddenly die, can an alteration in osmotic balance be the reason…

A: The passage of water through a membrane is known as osmosis. The movement of water to the side of…

Q: d) Since we know this bacterial organism thrives in colder areas of the world, what can be said…

A: Bacteria are present everywhere in the world, including cold environments. Certain types of bacteria…

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…

Microbial Physiology

Microbial physiology is the branch of microbiology that is associated with studying the physiology of fungi, bacteria, and viruses. It is an important field of science concerning functional genomics and metabolic engineering.

Chemotaxis

The organism’s movement in a particular direction as a response to certain chemicals that are available in the environment is defined as chemotaxis. In brief, it can be defined as the occurrence of an organism’s movement in response to a certain chemical stimulus.