There are 5 TSIA media A-E beginning from the left. Describe the reactions in tubes B, C, D, E only.

Q: Why do cells need to be kept in the freezing devices first then transferred to liquid nitrogen…

A: Rapid freezing of cells can cause ice crystals large crystals can be formed in which cells are…

Q: Why does motility media contain a lower amount of agar than ordinary agar?

A: Agar is a phyco-colloid polymer of galactose monomers obtained from red algae (Gelidium and…

Q: Why does the fermentation process produce solutions of only 10 - 15% ethanol?

A: Anaerobic respiration: -Also known as fermentation is the process where carbohydrates are broken…

Q: Why del factor is important in media sterilization?

A: Sterilization, which was called by various means such as Del factor, Nabla factor and the…

Q: Need help  Can a pure culture be prepared from a mixed culture in a broth or plate? Explain.

A: INTRODUCTION How to make a pure culture from mixed culture is explained below.

Q: why is it that psychrotrophs placed in TSA medium are incubated at 7oC?

A: Psychrophiles are organisms that can survive and reproduce in low temperatures as low as -20 degrees…

Q: Give two ways to prevent the diffusion of oxygen into the medium in this test.

A: The main two ways to prevent the diffusion of oxygen are given below.

Q: Agar is a solidifying agent used in media preparation. What is its origin?

A: Agar gel is a polysaccharide which can become liquefied at temperatures ranges from 85°C to 90°C and…

Q: Why Nitrogen (or Argon) Gas Is Used as a Wine Preservative?

A: Argon is a highly stable, tasteless, and odourless chemical element. Argon is two and half times…

Q: Questions 1 Predict the effect of the following "mistakes" made when performing a Gram stain. Your…

A: In order to understand the mistakes made in Gram staining procedure we need to understand the whole…

Q: Why does the commercial production of yeast require special equipment to achieve adequate aeration,…

A: High yield of yeast cannot be attained unless air in a huge quantity is injected in fermentation…

Q: Jessie is working with a 100% stock concentration of Clorox. She decides to add 100 μL of bacteria…

A: For calculating the unknown concentration of the tube we will be using the formula as mentioned…

Q: Explain why litmus milk is considered a good differential medium.

A: Differential media are the growth medium that helps in differentiating bacterial samples on the…

Q: Was there any difference in the amount of gas produced by yeast in room temperature tapwater…

A: Saccharomyces cerevisiae, more commonly known as Baker’s Yeast, is a single-celled microorganism,…

Q: In order to the spectophotometer to determine the amount of product the following forne d at various…

A: Lactate dehydrogenase is an enzyme that catalyzes the interconversion of pyruvate and lactic acid or…

Q: You have 0.05 ml of kombucha that contains microbes at a concentration of 8.2 x 10^6 CFU/ml. You…

A: Creating proper dilutions and working out the colony-forming units or CFU/ ml is one integral part…

Q: other than 1. spheroplast technique 2. Heat denaturation, ammonium sulfate precipitation 3.…

A: Alkaline phosphatase is a type of hydrolase that removes phosphate from the 5- or 3- location of…

Q: What is differential medium and differential media? Explain the difference ?

A: Difference between differential medumium -   .- A differential medium support the expansion of any…

Q: Uses inorganic carbon as a carbon source for building its own organic molecules. A type of organism…

A: Match the following are as given below :

Q: The vp test looks for products of fermentation

A: Biochemical tests utilize the specific characteristics of bacteria to identify them accurately. Some…

Q: What medium is this? What is the result in tube at left? In second tube? What does it tell you about…

A: One stab towards the bottom of the SIM tube is used to inoculate it. If the microorganism is motile,…

Q: ou are given an unknown bacterium in the lab and have to determine unknown bacterium's oxygen needs.…

A: Each living organism has certain kind of respiration process for synthesizing energy by breaking…

Q: You have a broth medium that you would like to turn into a solid medium in order to do streak…

A: The "nutrient broth" is essentially nutrient agar without the solidifying agent. They stay liquid at…

Q: What result do you report for one of your unknown bacteria in terms of mannitol fermentation?

A: Mannitol salt agar or MSA is a commonly used selective and differential growth medium in…

Q: Why do you think autoclave sterilization of media is preferred over open flame?

A: An autoclave is used to sterilize surgical equipment, laboratory instruments, media  and other…

Q: The arrowhead shaped zone shows what reaction? How do you set up the test for this reaction? For…

A: INTRODUCTION Clostridium perfringens is a normal bactetia seen  in large intestine of humans and…

Q: What is differential medium

A: Differential medium or indicative media contain compounds which support the growth of microbes and…

Q: What is the name of this media? What type of media is it? What does the yellow color indicate? What…

A: Selective media generally selects for the growth of a desired organism, stopping the growth of or…

Q: Can xylane powder from beechwood be dissolved in M9 media? I'm evaluating the production of…

A: Xylan is a polysaccharide that accounts for most of the dry weight of woody/lignified plants and…

Q: When testing antimicrobial compounds on lawns of plated bacteria, the strongest germicide could…

A: Bacteria are prokaryotic unicellular organisms that are omnipresent in the environment. There are…

Q: Does this source pass the CRAPP test? In what way?…

A: Solution:The source, titled "The Effectiveness of Mindfulness-Based Stress Reduction on the…

Q: WHY IN INDOLE TEST A COLORED RING FORM AT THE TOP OF THE CULTURE MEDIA BUT NOT THE WHOLE CULTURE…

A: Indole test is a biochemical test for distinguishing between Enterobacter aerogenes and Escherichia…

Q: Why will a strict anaerobe grow in thioglycollate broth even when the medium is exposed to…

A: Introduction :- Anaerobic bacteria are microorganisms that can thrive without oxygen. For instance,…

Q: What is the point of the pressure in the autoclave sterilization?

A: Autoclaves are the devices which are like pressure cookers and  used in laboratories that provide a…

Q: This microbe does not have a fermentation pathway sufficient for growth when oxygen is not present O…

A: Fermentation is a metabolic process in which a carbohydrate, such as starch or sugar, is converted…

Q: prior to this study, why did researchers never notice that B. anthracis can make both an S-layer and…

A: Bacillus anthracis is a gram-positive bacteria. It is a virulent and capsulated bacteria. It causes…

Q: How many grams of media would be required to prepare 350 plates assuming 20 mL per plate? O 72 O 112…

A: The preparation of  mentioned Escherichia coli culture media contain 36 grams per litre deionized…

Q: 250 uL of 1M azide was added to a 25 mL yeast solution. What was the concentration of azide in the…

A: Azide is a strong inhibitor of yeast mitochondrial respiration. It obstructs the electron transport…

Q: Why is it necessary to store the molten agar in a water bath at 50 degrees Celsius?

A: Introduction:-  Agar is made up of two polysaccharides: agarose and agaropectin, with agarose…

Q: The following plates were inoculated with organisms A, B, C, and D on each sector of this plate.…

A: The study of tiny living creatures such as bacteria, viruses, fungus, algae, and protozoa is known…