How do you think changing the temperature at which the bags were incubated affected the results?

Q: Dr. Riggs took 1ml of whole mouse blood and added it to 10ml of PBS. You next take 0.5 mL of Dr.…

A: The first step is to calculate the average number of cells counted in the hemacytometer. The counts…

Q: A glass flask is rinsed and autoclaved after use. It was then filled with sterile media in a sterile…

A: Introduction Microbes or microorganisms may be found on almost every surface, in the air we breathe,…

Q: Who invented penicillin?

A: Penicillin is a group of antibiotics, derived originally from common molds known as Penicillum…

Q: Why is skin contamination such a big problem in blood culture test?

A: Contamination can arise during the preparation of the venipuncture or catheter insertion site, the…

Q: Two different bacterial samples, A and B, were inoculated onto SIM media. What can you conclude…

A: SIM (Sulfide, Indole and Motility) test is done to differentiate the Gram negative bacilli based on…

Q: What is the proper collection time period for a fecal fat specimen? 1) 24 hours 2) 48 hours 3) 72…

A: Fecal lipids come from four different places. They are lipids that are consumed but are not…

Q: In a plate count, 1 mL of culture is spread on a plate and incubated for 24 hours. 250 colonies are…

A: Given,number of colonies in a 1mL of culture = 250. Also,given that this given solution is 100 times…

Q: You make a 1:100 dilution of your culture and plated 0.1 ml of this sample on a Nutrient agar plate.…

A: The amount of organisms present in the original culture is called as colony forming unit per…

Q: What was one benefit of the vaccine produced by the command economy?

A: Command economy is also called as a planned economy, where the government controls all the economic…

Q: What is the difference between Benedict and Barfoid's test?

A: Both Barfoeds and Benedict’s solution are made from same ingredients. But their capabilities are…

Q: If the test method used in the laboratory varied from the specification, how will  it affect the…

A:

Q: Why was a blood agar, rather than a nutrient agar, plate used for the culture from your mouth?

A: Cultured bacteria are any bacteria that grow in the lab by the microbiologist using the required or…

Q: what does it mean if a bacteria tested negative for H2S

A: Hydrogen sulfide test  H2S  or Hydrogen sulfide is produced during metabolism of sulfur containing…

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: Did each handwashing treatment result in similar types of organisms growing on the plates? (look at…

A: The science of tiny creatures' biology includes viruses, bacterium, algal, fungus, slime moulds, and…

Q: Where did evidence of SRY come from?

A: SRY is a gene which is found on chromosome Y. It is male sex determination factor in  Human beings.

Q: What is the purpose of the TSI test?

A: A triple sugar iron test or TSI test is used to test a microorganism's ability to ferment sugar and…

Q: -Two hundred patients without chest pain were screened with a new biochemical test that showed 190…

A: A screening test is important in the diagnosis of any disease at the initial stage. In some cases,…

Q: ● . If the culture from which you are preparing the slide is a liquid, simply flame your loop, allow…

A: Introduction:- Cells are the basic structural and functional unit of life. Cells are capable of…

Q: You performed an ELISA and upon looking at your results, you realized you torgot to coat the wells…

A: A key feature of the plate based ELISA is that capture protein that is antibody or antigen can be…

Q: If the test samples are positive for the antigen in the ELISA we are using, what color will you see?…

A: ELISA:                     ELISA ~ Enzyme-Linked Immunosorbent Assay          In analytical…

Q: yield

A: The Dische's test is a chemical test that is utilized to detect the presence of DNA in a solution.It…

Q: What do you mean by Immunoelectron Microscopy?

A: Microscope is an analytical instrument which is used to analyse, study and visualize internal…

Q: What is the purpose for testing a specimen for hydrogen sulfide production?

A: Hydrogen sulfide is produced when a bacterial strain reduces the sulfur compounds.  The specimens…

Q: If the organism is a pony which of the following tests would be positive  a cellular respiration…

A: In the living world, we see a large number of microorganisms, animals and plants. These organisms…

Q: Which of the following methods should NOT be used to thaw frozen meats? a) refrigerator thawing b)…

A: Thawing is the process of taking a frozen product from frozen to a temperature (usually above 0°C)…

Q: You counted 40 colonies on a plate in your dilution series. The plate was inoculated with 1.0ml from…

A: A microbial sample will have enormous amount of cells. To estimate this by calculation, the sample…

Q: How can you collect a fecal sample from a patient for lab testing.

A: Specimen collection is the common step of every diagnosis. Care is taken while collecting the…

Q: When viewed under a microscope, bacteria appear as red rods after they have been stained. Explain a…

A: Introduction Bacteria Are Minute, Single-celled Organisms That Can Be Found In Large Numbers In All…

Q: Attached below is the study about the effects of handwashing and the effectiveness of soap against…

A: From the figure 8 , Agar plate with bacteria; (A) depicts the results before washing hands . There…

Q: thanol has been carried over into your DNA sample (two answers possible here, select both of them)…

A: DNA is not soluble in ethanol . But when ethanol is there DNA gets separated by forming white…

Q: What does the presence of gas in the Durham tubes for the presumptive test indicate?

A: Presumptive test : it is a test to identify bacteria from the large soil, water medium.  It is known…

Q: The majority of the nitrogen on earth can be found in which of the following reservoirs

A: Nitrogen is the 4th most abundant element in the atmosphere and is a very essential element for…

Q: yeast

A: Yeast is a single-cell organism, called Saccharomyces cerevisiae, which needs food, warmth, and…

Q: Why can't you see the bacteria when you first swab a plate

A: Bacteria are one-celled organisms that make up a vast group. They can dwell in a variety of…

Q: What is a better alternative to the plate count method?

A: The plate count method is used to know the number of bacteria in any sample. It is practiced in…

Q: When the plates are placed inside the incubator, they are only loosely covered without sealing…

A: Introduction :- A device called an incubator is used to cultivate and preserve cell or…

Q: What is the difference between a Hemin test and a Benzidine test?

A: Hemoglobin is a blood protein that is responsible for oxygen transport in the tissues. Hemoglobin…

Q: Why is it a mistake to use the same syringe, even with new , sterile needles?

A: Contamination is the presence of any impurity, constituent, or any unwanted element that can infect,…

Q: If you were working with Drs. Joseph Warren and Barry J. Marshall to design a study to determine…

A: Discoveries in the scientific world are replete with examples of Chance or accidental discoveries,…

Nutrient Growth Medium

It is a culture medium or nutrient broth for all kinds of microorganisms to grow properly and create their colony. This matrix provides support to increase the population of microbes through the method of cell proliferation. It is regarded as the food material for those organisms. It is a type of in vitro mechanism, in which the development of life is processed outside the host body. It can be solid, semi-solid, or liquid in nature. Different kinds of cells develop in different types of media.