biology question about boiling an egg??

Question

egg white is composed mainly of a single kind of protein, albumin. if you boil an egg, the egg white changes and cannot be changed back. what do you think happens to the egg white during boiling?

Answer 1

Albumin, made from 385 amino acid residues, has a specific 3D structure (see link below). This structure is held together by H-bonds, van der walls interactions, dipole-dipole interactions, di-sulphide bridges and hydrophobic bonding. In its native, normal, state all these interactions between different regions of the protein stabilise the structure, and the protein is soluble.

Energy is required to break all of these interactions. Heating the protein raises the kinetic energy of the protein and surrounding molecules (usually water). This high energy breaks these interactions, un-ravelling the 3D structure to give a new, less ordered, structure that is far less soluble and coagulates with all the other albumin molecules producing a solid. This is called de-naturing.

Answer 2

The albumin is denatured under the influence of heat. The tertiary structure of the protein is unfolded during heating and then re-folds incorrectly during the cooling process. The long string of amino acids remains unchanged, but is tangled in a non-functioning way. This changes the characteristics of the protein.

Answer 3

The yellow ball interior the egg is termed the yolk. until eventually a individual had specific well being issues, like a coronary heart project or extreme cholesterol, it completely extra healthy for human intake the whole egg, alongside with the yolk. whether, as with maximum meals, eat eggs sparsely. it incredibly is stated that one egg an afternoon is positive. a cutting-edge learn from the Harvard college of Public well being states (in part): "long vilified with the help of properly-meaning medical doctors and scientists for their extreme cholesterol content cloth, eggs at the instant are making a sprint bit a comeback. mutually because it’s real that egg yolks have countless cholesterol—and so might weakly impact blood cholesterol tiers—eggs additionally comprise food that could help decrease the possibility for coronary heart ailment, alongside with protein, supplements B12 and D, riboflavin, and folate. an excellent physique of study exhibits that for many human beings, cholesterol in foodstuff has a lots smaller result on blood tiers of entire cholesterol and risky ldl cholesterol than does the combination of fat in the eating regimen. cutting-edge study has shown that average egg intake—as much as a minimum of one an afternoon—does not advance coronary heart ailment threat in healthy persons (a million, 2) and could join a healthy eating regimen."

Answer 4

The protein (albumin) denatures, which means that the bonds within it break and its delicate structure comes undone.

Answer 5

Or you could just do your own dang homework.