1. Which amino acid traveled the furthest up the TLC plate and which amino acid traveled...

1. Which amino acid traveled the furthest up the TLC plate and which amino acid traveled the least?

2. Why must use a pencil instead of pen to write on TLC plate?

3. What is the function of ninhydrin spray?

4. What are the amino acid present in the unknown solution?

Expert Solution

queen_honey_blossom answered 1 year ago

The following data was collected from a TLC plate for 4 different compounds. The distance's traveled...

The following data was collected from a TLC plate for 4 different compounds. The distance's traveled by each is shown below: Spot A: 8.2 cm Spot B: 0.7 cm Spot C: 6.5 cm Spot D: 1.3 cm The spotting line was placed 1.5 cm above the base and the solvent traveled 10.5 cm from the bottom of the plate. Calculate the Rf value for each compound. My answers to this were A: 0.78 B: 0.067 C: 0.62 D: 0.12 I...

Which components of paprika move up the plate the most in a TLC experiment? Use polarity....

Which components of paprika move up the plate the most in a TLC experiment? Use polarity. The components are Capsanthin, capsorbin and beta carotene.

If a TLC plate was done in acetone and hexane which would have a higher rf...

If a TLC plate was done in acetone and hexane which would have a higher rf value: 1. Benzenaldehyde or 1,4-Pentadien-3-one, 1,5-diphenyl-? 2.Benzenaldehyde or 2,2’-(phenylmethylene)bis(5,5-dimethylcyclohexane-1,3-dione)? 3. Benzenaldehyde or 3,3,6,6-tetramethyl-9-phenyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione?

1) If the pI for a particular amino acid is 7.5, at which pH will the...

1) If the pI for a particular amino acid is 7.5, at which pH will the net charge on the molecule be zero? 2) Calculate the pH of 0.00756 M HNO3. 3) The isoelectric point of an amino acid is defined as: a. the pH at which it exists in the basic form b. the pH equals the pKa c. the pH at which it exists in the acidic form d. the pH at which the amino acid exits in...

could you have achieved a better separation on your TLC plate between aspartic acid and phenylalanine?

A TLC plate showed two spots with Rf values of 0.25 and 0.26. The plate was...

A TLC plate showed two spots with Rf values of 0.25 and 0.26. The plate was removed from the developing chamber, the residual solvent was allowed to evaporate from the plate, and then the plate was returned to the developing chamber. What would you expect to see after the second development was complete?

1.The amino acid serine is classified as a(n) _________________________________________________ amino acid. 2.A type of chromatography that...

1.The amino acid serine is classified as a(n) _________________________________________________ amino acid. 2.A type of chromatography that fractionates proteins based on differences in their size is ____________________________________ chromatography. 3. In Anfinsen's experiments on the structure and function of RNase, he found that non-covalent bonds were key in determining the _________________________ structure of the enzyme. 4. A type of reversible enzyme inhibitor that binds to the active site of an enzyme and prevents the substrate from binding the active site is is...

1. Which of the following statements is FALSE? A. The amino acid pool is the body's...

1. Which of the following statements is FALSE? A. The amino acid pool is the body's total supply of amino acids in the body's proteins. B. Fats and carbohydrates are oxidized directly to produce cellular energy. C.Amino acids can be used to supply energy only after being converted to a citric acid cycle intermediate. D. Excess carbohydrate and fat can be stored as such, whereas excess amino acids are oxidized for energy or converted to fat or glycogen for storage....

A) What amino acid characteristics result in large Rf values? B) On a silica plate, predict...

A) What amino acid characteristics result in large Rf values? B) On a silica plate, predict the relative movement of aspartic acid, valine, and serine.

1). Where do the hydrophobic amino acid residues usually end up in a folded protein and...

1). Where do the hydrophobic amino acid residues usually end up in a folded protein and why? How does hydrogen bonding play a role in stabilizing the beta-sheet structure? Where do the R groups then end up in this structural pattern? 2). Why is the alpha-helix so commonly found? Describe the structural basis of this conformation. 3). How do amyloid-beta peptides aggregate and eventually cause Alzheimer's disease? Where do the amyloid-beta peptides come form (what protein are they from and...

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