Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Biology Expert

In a microbiology lab experiment, 2 different E. coli strains as a well as a untreated water sample were plated on an nutrient agar dish using aseptic techniques. The same bacterial solutions were plated on another nutrient agar dish, however this dish was treated with X-gal. What is the purpose of the agar dish not treated with X-gal? (X-gal shows the presence of an enzyme that metabolizes it, which yields a blue colour).

Biology, Academics

  • Category:- Biology
  • Reference No.:- M944254

Have any Question? 


Related Questions in Biology

Steroid hormones such as testosterone are derived from

Steroid hormones, such as testosterone, are derived from cholesterol. What type of macromolecule are they?

In anotherchapter you will learn of evidence that primates

In anotherchapter, you will learn of evidence that primates, especially fossil species in the Hominin group that apparently led to our currentHomo sapiens sapiensspecies identity. Many of the fossils of pre-human species ...

What characteristics of sahelanthropus tchadenssis exclude

What characteristics of Sahelanthropus tchadenssis exclude it from being considered human?

What would be the expected genotypes and phenotypes of the

What would be the expected genotypes and phenotypes of the children and their relative frequencies from the following crosses a) NN X nn b) Nn x nn c) Nn x Nn d) nn x nn Where n represent gene for albinism and N represen ...

Determining whether clean groundwater has become dirty and

Determining whether clean groundwater has become dirty and what caused any contamination is a complex pursuit. Stephen Osborn and three colleagues from Duke University set out to learn whether drinking water was really b ...

What are the differences between the roles of mainstream

What are the differences between the roles of mainstream and alternative health care providers? Do you feel that these types of health care workers are given the respect as professionals that they deserve? Why, or why no ...

Huntingtons disease affects individuals late into adulthood

Huntington's disease affects individuals late into adulthood. Given what you know about how Natural Selection works, explain why Huntington's disease hasn't been eradicated from the population.

What is inbreeding depression please give some examples of

What is inbreeding depression? Please give some examples of inbreeding depression in dogs and cats?

What is the difference between cis-acting elements and

What is the difference between cis-acting elements and trans-acting factors in the regulation of DNA?

Topic genomicsquestion describe how the use of genetic

Topic: Genomics Question: Describe how the use of genetic knowledge can change the course of disease. What are the implications of the prolific use of genetic knowledge for the intervention of disease? Should there be an ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro