You are working on a protein containing no tyrosine residues and 2 tryptophan residues. Excitation at 295 nm yields the observation of an emissions spectrum with distinct peaks at 315 and 350 nm. Using your knowledge of tryptophan emissions behavior please interpret these data. Specific questions to address include: 1) Why would you expect to observe two distinct peaks? 2) What can you say about the microenvironment for each tryptophan residue? 3) What can be inferred about the possible electronic transitions available to these tryptophan resides? 4) For the alternative scenario where this protein contains 1 tyrosine residue, would these data collected under identical conditions be interpreted differently?

advantage of using stem cells in medical research:

1.       it provides medical benefits in the fields of therapeutic cloning and regenerative medicine.

2. it provides great potential for discovering treatments and cures to a variety of diseases including parkinson disease, spinal cord injuries, diabetes, alzheimer’s disease and many more.

3. limbs and organ could be grown in lab from stem cells and then used in transplant or treat illness.

answer: i don't know

explanation:

you need to provide a picture, otherwise i can't tell you.

if you can provide one, i'd be more than happy to you with this!

sheep is a herbivore animal whereas grasshopper belongs to the class chordates but both of them feed on greens.  

if grasshopper and sheep feeding on a pasture land, i do not think both of them will have any impact on each other. however, the number of the species can make difference. since sheep feed on greens, there is a possibility there left no pasture land for the grasshoppers or they may get extinct.