Answered: The mud at the bottom of a Winogradsky…

Science

Biology

The mud at the bottom of a Winogradsky column is usually found to have a black colour. Explain why?

An Illustrated Guide To Vet Med Term

4th Edition

ISBN:9781305465763

Author:ROMICH

Publisher:ROMICH

Chapter16: Testing Testing

Section: Chapter Questions

Problem 1FITB

See similar textbooks

Related questions

Q: relative humidity

A: Answer: Measuring instruments are the instruments which are used to measure or control the physical…

Q: Using this formula: 1 ocular micrometer space = number of microns measured on the stage micrometer/…

A: Introduction: A microscope is an optical instrument used for viewing very small objects, such as…

Q: Name a solution whose concentration is greater than that of cell sap.

A: Osmosis is a process in which water molecules from the low concentration of solute to the areas…

Q: With regard to the fermentation of wine, what kind of wine wouldbe produced if you washed the grapes…

A: Wine is defined as an alcoholic beverage that is made or composed from the fermented juice of…

Q: explain the liquid growth analysis process in your own words

A: Growth media in a liquid form is called as Nutrient broth. It's composition mainly consists of…

Q: Compare and contrast granular and bulking sludge. Why is granular sludge desirable?

A: Wastewater is obtained from households and is rich in water with some particulate matter.

Q: Test the formation of translucent spots of the following oils on a paper and explain the results…

A: Coconut oil and olive oil translucent paper spots: Coconut oil is lipid in nature, whereas, olive…

Q: 1.Procedure for celloidin embedding ? 2.Procedure for vacuum embedding? 3.Procedure for epoxy…

A: 1.Procedure for celloidin embedding Celloidin is utilized in arrangement, generally in a 1:1…

Q: Match the numbers in the image belbv to the correct term.

A: Osteon is the fundemental and functional unit of a compact bone . It contains the bone cells like…

Q: Organisms that live in fresh water are almost always hypertonic to their environment .In what way is…

A: The net movement of water exerts a pressure recognized as osmotic pressure out of or into a cell.…

Q: write the procedure for the following a. celloiding embedding b. epoxy embedding c. vacuum…

A: The procedure are as follows: a)celloiding embedding Celloidin is broken up into equivalent pieces…

Q: If these onion cells are placed in pure water, pure water is a solution.

Q: What gas is produced when antacid tablets are added to the red cabbage solution

A: Indicator is a substance that identifies whether a substance is an acid or base according to the…

Q: Use the counting method to estimate the length of an elodea cell. You will need to use your…

A: If the magnification is 400x then the diameter of one single cell would be .04mm To find the length…

Q: Pigment molecules absorb light energy of all wavelengths and reflect other wavelengths Select one:…

A: Photosynthetic organisms like plants (Producers) contain light-absorbing molecules called pigments…

Q: Why would hypertonic solution make a potato stick become limper?

A: Introduction: Osmosis is diffusion of water or solvent through a semi-permeable membrane from the…

Q: Define the term pure pigment.

A: A material that changes the color of transmitted light due to absorption of selective wavelength is…

Q: Mechanism of brewing

A: Introduction: The production of energy by the metabolic pathway in the absence of oxygen is…

Q: Why do we use sucrose solution when we observe plant cells? What explanation

A: When a plant cell is placed in a sucrose solution i.e in hypertonic solution water will move from…

Q: If I placed pieces of beetroot in a test tube and the test tube was placed in hot water, making the…

A: Beetroot contains a reddish purple color pigment which belongs to the chemical family called as…

Q: How does a Winogradsky column show actual environmental conditions?

A: Winogradsky column is a device invented by Sergei Winogradsky in the 1880s that is used to culture…

Q: plain Why do acidic dyes not stain bacterial cells?

A: Staining is the process of changing the colour of a substance to make it easier to examine tissues,…

Q: Bixa orellana (atsuete) is used in cooking as a natural food coloring. Which of the conditions will…

A: Introduction Bixa Orellana is a perennial, tall shrub, It is grown in many countries worldwide and…

Q: Llamas

A: Llamas are the type of domestic animals. They dominated the area of the highlands of the Andes in…

Q: What wil a slant look like if sterile? contaminated?

A: Microbes, which are tiny and nearly invisible, have had a huge influence on society since the…

Q: O 1) brightfield O 2) TEM 3) fluorescent O 4) confocal O 5) phase contrast

A: Different microscopes are used in terms of conditions in which we want to visualize the specimen.…

Q: Region/point where the solution has a 50:50 percent mixture of the (0) and the (+1) species.

A: Amino acids are the biomolecules that contain alpha-carboxylic and alpha-amino groups in its…

Q: Why is one pigment more soluble than another? Consider Figure 4.5.

A: Chlorophyll is a pigment present in the thylakoid membrane of chloroplast in a plant, very crucial…

Q: Biological hazards can cause diseases or illnesses. Which of the following is not a biological…

Q: What effect does acid rain have on the enviorment on a macrocosmic scale?

A: Acid rain occurs as a result of chemical reactions. When compounds like sulfur dioxide and nitrogen…

Q: Given the figure below explain the effect of surfactants in terms of dirt removal on the solid…

A: A Surfactant molecule acts as a mediator between dissimilar boundaries, insoluble dirt, and water.…

Q: Why are some medical clinics experimenting with natural lighting the use of water , such as…

A: Natural lighting, aquariums, waterfalls and music influence the physicians and patient mental state…

Q: If sea fireflies (Cypridia hilgendorfii) are heated in water at 100oC for a few minutes before…

A: Question - If sea fireflies (Cypridia hilgendorfii) are heated in water at 100oC for a few minutes…

Q: What is the reason why using a spectrophotometer is considered an indirect measurement of cell…

A: A spectrophotometer is an instrument which is used to measure the amount of photons absorbed after…

Q: From what you know of tonicity, what can you say about the plant cells and the solutions in the test…

A: Tonicity is the relative concentration of solutes dissolved in a solution that determines the…

Q: Complete the picture of the thylakoids membrane in the beaker with solution at PH 8

A: The thylakoid membranes of a chloroplast is an internal system of interconnected membranes, that…

Q: Define the following terms: a. carotenoid b. stroma c. β-carotene d. lutein e. thylakoid membrane

A: Define the following terms:a. carotenoidb. stromac. β-carotene

Q: What do you mean by slime moulds?

A: Living organisms are classified into kingdoms based on the common anatomical and physiological…

Q: Why is scale formation typically only a problem in hot water pipes?

A: Scaling is a deposition process of calcium and magnesium salts.

Q: In cell counting, why do you need to calculate for the volume of media needed after computing the…

A: The cell enumeration is important for seeding the appropriate cell density into the media flask.

Q: PH paper used to identify if a substance is acidic or basic was previously derived from organisms…

A: The substances that are found naturally and can be used to infer the chemical nature of a solution…

Q: Why do detergent powders removes stain?

A: Answer 1: Detergents have the power to clean. Detergents are surfactants. Detergents are amphiphilic…

Q: What happens to winogradsky column if it is put in a dark place in room temperature.

A: The Winogradsky column is a small, enclosed ecosystem used to enrich sediment microbial communities,…

Q: what effect would using an old Gram's crystal violet preparartion containing crystallized dye have…

A: A microbe is a living entity that is so tiny that it cannot be seen with the naked eye. Microbiology…

Q: Explain based on molecular structure why Gram (+) and Gram (-) organisms stain differently.

A: The bacterial classification has been done using various methods such as their shape, type of…

Q: Explain in your own words the liquid growth analysis process that you see in the graph.

A: Telomerase maintains the length of telomere by de novo addition of repeats. However, recombination…

Q: What is the hazard of the spattering tendency in heating

A: Sterilization is the process of cleaning a substance by removing, killing or deactivating all forms…

Q: Why Ethylene is sprayed on a mango tree?

A: Ethylene offers natural gas originally but ripens mangoes, kept in an affirmative atmosphere.

Q: Make a diagram to illustrate the fluid mosaic model of the cell membrane

A: Fluid Mosaic Model of the cell membrane

Q: What is the effect on decomposition rate if :–a) Detritus is rich in lignin and chitinb) Detritus is…

A: A food chain is a linear network of links in a food web starting from produce organisms and ending…

Concept explainers

Terrestrial Ecosystem

An ecosystem is a collection of interconnected communities. It includes both living and non-living elements of specific strata. The terrestrial ecosystem is solely related to the ecosystem present on the land and covers 25 to 30% of the total earth’s surface area.

Question

The mud at the bottom of a Winogradsky column is usually found to have a black colour. Explain why?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions

If sea fireflies (Cypridia hilgendorfii) are heated in water at 100oC for a few minutes before grinding them with a pestle and mortar, what would you have expected to see? Explain.
Why do mosquitoes get attracted to dark materials?
Where will lignin degrade faster: in a shallow riverbed or in a rice paddy? Explain.
What happens to winogradsky column if it is put in a dark place in room temperature.
Mention and explain at least one reason why you might obtain growth of bacteria on EMB that was supposed to appear green but it resulted in pink color?
Why efficascent oil is green liquid?
Was there any difference in the amount of gas produced by yeast in room temperature tapwater compared with yeast in tapwater at 35-40 degrees Centigrade? Explain why this might be so.
What kind of ion exchange resin would be most effective for purifying RNA molecules, an anion exchanger or a cation exchanger? Why?
Why are viens blue?
In UV/Visible spectrophotometer analysis for a multicomponent system, there are only two dyes used in the mixture, the two proportions should be totalled to 1.0. but on finding You got 0.6 in total. Explain the reasons for the difference.
Explain why you can use OD675 (optical density at a wavelength of 675nm) as a proxy for cell density of your algal cultures.
Paper recycling companies refuse to collect paper products that are contaminated with food or have been sitting wet for a day. A college sorority member who is running a recycling program on campus wishes to know the reason for this. What reason did the chemist who works for the recycling company probably give her for this policy?