You have just obtained the 3d structure of a newly discovered protein. when you investigate it on the computer, you find that it has 10 alpha helix that are form a ring. further, you realize that there are two protein chains in the folded structure of the protein and that each contributes 5 helix to the final structure. when you run into your lab partner later, you tell them that the protein has all levels of protein structure up to structure.

it is very expensive

explanation:

i won't lie i don't know so go online and ask google thats what i do

the correct answer is option d.

an appositive is a noun, noun phrase or noun clause which follows another noun or noun phrase in order to describe it or name it another way. they are usually used between commas, brackets or dashes.

the example sentence with the correct use of commas is the following:

her uncle, the man over there in the red shirt, owns the hardware store in town.