Which of the following correctly describes quaternary level of structure in proteins?
A) It is when all the amino acids have joined together with peptide bonds.
B) It is when the hydrogen bonds have interacted with one another to form shapes such as alpha-helices and beta- pleated sheets
C) It is when functional groups have been added to a protein
in the Golgi apparatus
D) It is when several folded proteins interact with one another to form a protein complex
E) It is when side groups on the amino acids have interacted to
fold the protein into a specific three dimensional shape

Recently, crops of vegetables such as lettuce and green onions have been contaminated, while they are still on the farm, with bacteria that cause food poisoning. how will science influence the way the government responds to prevent an increase in food-borne diseases? because science has shown that lettuce and green onions are not nutritionally valuable, the government may pass laws that ban the sale of lettuce and green onions. because science has shown that there is no way to prevent bacterial contamination, the government may pass laws that punish businesses that buy lettuce and green onions. because science has shown that the washing of hands prevent the spread of infectious diseases among people, the government may pass laws that require hand washing by everyone who handles food. because science has shown there are ways to find the source of the contamination, the government may pass laws that require farm practices that reduce the contamination of lettuce and green onions.