Oxygen requirement of organisms

Assignment Help Biology
Reference no: EM1385459

Question1. What is the oxygen requirement of organisms that are able to reduce nitrates?

Question2.Is nitrate reduction an aerobic or anaerobic process? Circle one.

Question3.What purpose does the nitrate serve to bacteria that can reduce it?

Question4.After incubation, two reagents will be added to the culture to determine if nitrate is still present. Name these reagents.

Question5.If a red color is produced after addition of these reagents, is the test positive or negative?

Question6.If the test is negative, does this mean that the organism did not reduce nitrates? What are the possibilities?

Question7. If there is no color change after the addition of the reagents noted in #4, zinc is added to the culture. What purpose does thezinc powder serve?

Question8. What color is a positive test after addition of zinc?


Reference no: EM1385459

Discuss applications of microbiology that directly benefit

Discuss the applications of microbiology that directly benefit mankind. how would your current life style be affected if the application were no longer available? Consider i

What are the directions of the keratin fibrils in hair

Hair splits most easily along its fiber axis, whereas fingernails tend to split across the finger (sideways) rather than along it. What are the directions of the keratin fib

Rawmaterial for evolutionary change are mutations

Reproductive potential is the same for every generation oforganisms. The rawmaterial for evolutionary change are mutations. Microevolution refers to change of microbial popula

Find the thy mutant in the first place

A biologist was testing E. coli for thymidine requirement. She found a thy- point mutant and wanted to study reversion to thy+. She grew 20 cultures of the thy- mutant strain.

What are the frequencies of the various genotypes

What are the frequencies of the various genotypes and various phenotypes in this population? Assume Hardy-Weinberg equilibrium - What is the minimum codon size in this genetic

How much will you save with the better deal

you are shopping in the stores for this fancy perfume your mom likes and have found it for $125.00 per 1 liter bottle. not impressed with the price, you turned to the intern

Question regarding the prokaryotic kingdom

Name (i) the only prokaryotic kingdom (ii) the scientist who gave the idea of natural selection (iii)the cells that make antibodies (iv) the kind of muscle fibres present in

Estimate expected phenotypic segregation ratio

Think about the following hypothetical scheme of determination of coat color in a mammal. Gene  A  controls the conversion of a white pigment P 0  into a gray pigment P 1 ;


Write a Review

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