What are different potential products of nitrate reduction

Assignment Help Biology
Reference no: EM131255770

LAB Book Used: Leboffe and Pierce (2016). Brief microbiology laboratory theory and application (3rd ed.) Englewood, CO: Morton Publishing.

ISBN: 9781617314773

Exercise 2-13 (Chemical Germicides: Disinfectants and Antiseptics)

1. The concentrations of the potential germicides are very different. Why is ok to compare these agents at different concentrations?

2. Which agent would your PREDICT would have the greatest antimicrobial effect? Why?

3. This exercise uses FOUR control tubes. Each control tube is used to check on a different aspect of the experiment. For each control tube, indicate what the tube is checking for. "To see what the result looks like" is incorrect for all four tubes.

4. Four agents were tested in this experiment, which agent do you think worked best against E. coli? Explain your thinking. Four agents were tested in this experiment, which agent do you think worked best against B. subtilis? Explain your thinking.

5. In another time, in another place, the petri dishes were not been washed well between lab sessions. Some sections noticed that the disinfectants seemed to work better in these unwashed dishes and other students noticed that the agents seemed to work less well. Stretch your thinking. What might lead to an improvement in results or a diminishing of results? Discuss both outcomes.

Exercise 5-4 (Catalase)

1. Only cells that do aerobic respiration make catalase. What does catalase do for these cells? What are the bubbles formed in the catalase reaction made of? What is the complete reaction for the breakdown of hydrogen peroxide by catalase?

Exercise 5-6 (Nitrate Reduction)

2. What are the different potential products of nitrate reduction?

3. Why must you know whether an organism is a fermenter or not in order to determine whether any gas observed in the tube is from denitrification?

Exercise 3-13 ( Microscopic Examination of Eukaryotic Microbes)

4. What are three things you might have observed in the slides of the protists that would tell you that you were looking at protists and not bacteria? Be sure the items you list are present in the observation sheet you submit.

5. Why is it easier to differentiate ticks from fleas, mites, and mosquitoes than it is to differentiate the cercaria of the Schistosoma mansoni from the Giardia lamblia?

Exercise 2-1 (Ubiquity of Organisms)

1. What does it mean to be ubiquitous?
2. What is the purpose of plates 7 and 8?
3. What are two variables being testing in this exercise?
4. What is the purpose of rolling the swab as you streak it across the agar surface (and the sampled surface)?

Reference no: EM131255770

Questions Cloud

Explain the handing of specimen and how the infectious agent : Describe the handing of the specimen and how the infectious agent, in this case a bacterial pathogen, is isolated from the sputum sample.
What determines whether a policy is enacted or not : What is the difference between public versus private concerns in relation to policy making and the government's role in this process? Describe two ways that social science research helps to design good public policies. Why are social science resea..
What has gone wrong with the facility : What has gone wrong with the facility once it is opened - in terms of design and finances? -  Why are the occupancy rates low?
Access the members of a class : What is the process by which we can control what parts of a programm can access the members of a class?
What are different potential products of nitrate reduction : What are the different potential products of nitrate reduction? Why must you know whether an organism is a fermenter or not in order to determine whether any gas observed in the tube is from denitrification?
List five ways that industrialization affected the life : List five (5) specific groups that were affected by industrialization. Provide two (2) examples for each group describing how the group was affected. (Consider issues such as race, ethnicity, gender, child labor, etc.) List five (5) ways that indu..
Determine the time required to complete the weld : A continuous weld is to be made around the circumference of a round steel tube of diameter = 6.0 ft, using a submerged arc-welding operation under automatic control at a voltage of 25 V and current of 300 A. The tube is slowly rotated under a stat..
Compare and contrast mutual funds and hedge funds : Compare and contrast mutual funds and hedge funds (clients, risk, minimum investment, etc.). Give an example of a provider of each fund. Why might you not presently be a hedge fund client
Determine the rotational speed of the electrode wheels : A resistance seam-welding operation is performed on two pieces of 2.5-mm-thick austenitic stainless steel to fabricate a container.

Reviews

Write a Review

 

Biology Questions & Answers

  Summarize sympatric speciation and polyploidy methods

Summarize the following three methods that could produce a new species from an existing species and provide examples, in 700 to 1050 words. Include a summary and specific examples:

  What is proteolytic digestion

1)What is Proteolytic Digestion?

  Inheritance of traits-punnett squares to predict the chances

Conceptually speaking, order the following structures from smallest to largest: DNA, gene, genome, chromosome, nucleotide.

  What is the parental generation for the mapping experiment

What is the parental generation for the mapping experiment? What assumptions are you making for the parental generation of the mapping experiment? Give the phenotype and genotype of parental generation.

  Function of mechanical digestion

Three groups of cyclists shown above consumed 3-different types of diets: high-carbohydrate, a diet mixed in carbohydrates, or a diet higher in protein and fat.

  Discussing the various sclerosis support group.

Advantages and disadvantages of keeping a family member with the Multiple Sclerosis within a nursing care facility. Specify some of the questions you may utilize to start the discussion? How will you prepare yourself in order to keep the discussion f..

  Will ha treatment revert nonsense mutations

Why is it impossible to induce nonsense mutations (represented at the mRNA level by the triplets UAG, UAA, and UGA) by treating wild-type strains with mutagens that cause only A-T? G-C transitions in DNA?

  Define and explain hydrogen bonding

Define and explain hydrogen bonding. List and discuss the properties of water and explain the role that hydrogen bonding plays in the properties.

  Find out the genotypes of the parents

What occur on BTB solution if you combine into germinating radish seed? And what happen if BTB solution combines into yeast glucose solution.

  Describe the structure of the muscle fiber

Describe the structure of the muscle fiber (cell) and the unique names we give to its structures

  How many phenotypic classes are expected in the F2generation

A dihybrid cross AA bb x aa BB is made in which A is dominant but Band b are co-dominant. How many phenotypic classes are expected in the F2generation?

  Develop a vaccine for a certain type of flu bacteria

Bacterial mutations are a great example of natural selection, especially those that cause the flu. But what happens when we can't develop a vaccine for a certain type of flu bacteria? If it turns out to be a deadly type, think about the population..

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd