What would be the appropriate blank

Assignment Help Biology
Reference no: EM1396120

A Bio 5A student has the choice of three types of pigment to study for an exercise in quantitative spectrophotometry. She always liked the bright yellow color of ripe bananas, so the pigment responsible for this color was chosen. A solution comprised of 100 ml acetone and 100 ml H2O was used to extract and purify the yellow pigment. The pigment solution was then evaporated to a dry powder, dissolved in methanol, and given to the student in this condition. What would be the appropriate blank to use for the spectrophotometric measurements? A. A mixture of equal volumes of acetone and H2O. B. Acetone C. H2O D. Methanol E. More information is needed before this determination can be made.

Reference no: EM1396120

Questions Cloud

What you have learned about antigen processing : An attenuated active ("live") viral preparation that has low virulence but can still invade and replicate in host cells.
Explain how important is it for telephone industry to offer : A new graduate hired by a marketing research department of a major telephone industry is asked to prepare a questionnaire to determine household preferences for telephone calling cards.
Amount of total claims over a period of days : Find the probability that the amount of total claims over a period of 100 days is at least $150,000. (Use the fact that the sum of independent normally distributed random variables is normally distributed, with mean equal to the sum of the individ..
Advantages of linear regression in complex situations : How does a linear regression allow us to better estimate trends, costs, and other factors in complex situations?
What would be the appropriate blank : What would be the appropriate blank to use for the spectrophotometric measurements? A. A mixture of equal volumes of acetone and H2O. B. Acetone C. H2O D. Methanol E. More information is needed before this determination can be made.
Distribution of amounts purchasing normal distribution : The mean amount purchased by a typical customer at Churchill's Grocery Store is $23.50 with a standard deviation of $5.00. Assume the distribution of amounts purchased follows the normal distribution. For a sample of 50 customers, answer the follo..
Is there still a need for cultural intelligence : Explain how should leaders resolve the challenges also take advantage of the opportunities? Is there still a need for cultural intelligence? Explain why?
What is the relationship between an objective lens : What is the relationship between an objective lens' numerical aperture and resolving power? A. As numerical aperture increases, resolving power decreases.
Information about least squares regression line : How do we use a least squares regression line? Please explain in your own words. What is the range for the coefficient of determination? Please explain in your own words.

Reviews

Write a Review

 

Biology Questions & Answers

  Steriod side-effects

Josie has been taking steroids for a prolonged period of time as treatment for rheumatoid arthritis. She has gained weight, especially in her face, and notices that her skin is thin and bleeds easily.

  Explain why only certain cell types are permissive

Explain why only certain cell types are permissive for transcription of HIV proviral DNA. What cellular factors are involved and why?

  Find the range of arsenic blood concentrations

Arsenic is a compound naturally occurring in very low concentrations. Arsenic blood concentrations in healthy individuals are Normally distributed with mean =3.2 ug/dl and standard deviation = 1.5 ug/dl.

  Elucidate the importance of an arthropods exoskeleton

What type of electrode would they need to use (express material and design)? Provide a simplified schematic (circuit model of the electrode) described in the notes. Also discuss at least two benefits of an exoskeleton as well as how arthropod grows ..

  Precautions for use of vitamin c

Within an essay response, discuss the next concepts: an antioxidant's function, free radicals and their effect on the human body, sources of vitamin C, optimal delivery system for vitamin C, and precautions for use of vitamin C.

  Description of surface-to-volume relationships

Advantages and disadvantages of mesoderm, the need of modifications for the elimination of nitrogenous waste, and a description of protonephridial function.

  Question about consecutive crosses

Two consecutive crosses, with the first between pure-breeding parents that differ in two phenotypes to create an F1 generation, and the second in two F1 progeny to create an F2 generation.

  Chimpanzee somatic cells

Chimpanzees have 24-pairs of chromosomes. Chimpanzee somatic cells contain DNA double helices.

  Analyzing the bases of a sample of nucleic acid

Examine of the bases of a sample of nucleic acid yielded these percentages: A= 20%, G= 30%, C= 20%, T= 30 percent. Explain why is the sample single stranded DNA.

  Which dog was most likely not responsible

The restriction enzyme Scs1 cuts at a restriction site that is found only very rarely in dog genomes. One dog, Jimmy, has two restriction sites for this restriction enzyme in his genome. Another dog, Billy, has three restriction sites for this enz..

  Equipment for analyzing the bullet

At a situation, the investigators found a bullet lodged into the window frame above the woman’s desk.What kinds of equipment are forensic scientists most likely to use when analyzing the bullet?

  Illustrate the process of diffusion

Illustrate the process of diffusion. Name and explain the condition that exists when the diffusion of a particular substance is complete.

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