All of them.
Tertiary is the overall 3D shape of the protein
Quaternary is what proteins it is attached to and how
Primary is the actual order of the amino-acids which make up the chain
Secondary is the way that that chain coils or folds
So 'helix' refers to the coiling of the chain. Hence it is the secondary structure.
Proteins are made up of long chains of amino acids linked together by peptide bonds. These chains fold into complex three-dimensional structures that are crucial for their function. The primary structure is the specific sequence of amino acids, while the secondary, tertiary, and quaternary structures refer to the different levels of folding and organization that give proteins their unique shapes and functions.
People usually refer to its shape as a double helix.
In DNA, Na refers to sodium ions that are important for stabilizing the structure of the double helix. In RNA, Na may also refer to sodium ions that play a role in stabilizing RNA secondary structures or in cellular processes.
The beads on a string level of DNA packing refer to nucleosomes, which are composed of DNA wrapped around histone proteins. These nucleosomes form the basic unit of chromatin structure, helping to compact and organize the DNA within the cell nucleus.
A bacillus does not refer to the shape of a virus. The capsid of a virus is what determines the shape of a virus.
A three dimensional spiral.
Structural proteins are essentially the only proteins found in virion. Using this phrase can also refer to proteins in small amounts.
"Protein" is not a specific molecule, but rather a class of molecules. The basic structure is an oligomer of beta-amino acids linked by amide bonds. Many proteins also incorporate cofactors or prosthetic groups.Protein structure could also refer to the 3D conformation of the peptide backbone. The two most common regular structures in proteins are called the "alpha helix" and the "beta sheet", but it's difficult to describe these without pictures. If this is what you mean, consult any good biochemistry textbook.
Proteins are made up of long chains of amino acids linked together by peptide bonds. These chains fold into complex three-dimensional structures that are crucial for their function. The primary structure is the specific sequence of amino acids, while the secondary, tertiary, and quaternary structures refer to the different levels of folding and organization that give proteins their unique shapes and functions.
People usually refer to its shape as a double helix.
Coiling is a common protein structure. It refers to the coiling of the polypeptide chain into an alpha-helix or a beta-sheet. Pleating is not a standard term but may refer to the folding of the protein chain into a more compact structure.
Turning pairs refer to two consecutive amino acids in a protein sequence that have specific properties, such as allowing the protein to change direction or fold. These pairs often involve glycine and proline residues due to their unique structural characteristics that facilitate protein folding and stability. Turning pairs play a crucial role in determining the secondary and tertiary structure of proteins.
Structural proteins are essentially the only proteins found in virion. Using this phrase can also refer to proteins in small amounts.
The rungs of the DNA double helix are made up of alternating deoxyribose sugar molecules and phosphate molecules. Please refer to the related link below.
Robert Crick is cited in Whitley Strieber's book Communion, page 123, as "the renowned discoverer of the double helix." This is simply an error on Mr. Strieber's part. He intended to refer to Francis Crick, who, with James Watson, discovered the structure of DNA.
The shape of a structure.
Industrial structure refers to how well developed a country's infrastructure is