The three-dimensional structure of macromolecules is formed and maintained primarily through noncovalent interactions. Which one of the following is not considered a noncovalent interaction? Group of answer choices 1. carbon-carbon bonds 2. hydrogen bonds 3. hydrophobic interactions 4. ionic interactions 5. van der Waals interactions

The correct option is 1. carbon-carbon bonds

Explanation:

It is called covalent bonding to a type of chemical bond, which occurs when two atoms bond to form a molecule, sharing electrons belonging to its most superficial layer, thereby reaching the well-known "stable octet". Carbon-carbon bonds are covalent bonds, which take place between two carbon atoms. There are simple bonds, which are generally the most common, since it is formed by two electrons, each one of one of the atoms participating in the bond.

The rest of the options belong to the groups of non-covalent interactions, these do not share electrons.

The ionic interactions and forces of Van der Waals interactions are purely electrostatic in nature (attraction or repulsion of electric charges), although neutral molecules participate in the latter, interacting well with other neutral molecules or with ions. The hydrogen bond or hydrogen bridge also has an electrostatic nature, but simultaneously has a certain covalent character. Finally, hydrophobic interactions depend on the high degree of water disorder, (that is, on its high entropy) and are characteristic of those molecules that cannot easily interact with water.

this age may represent the age of the earth's accretion, of core formation, or of the material from which the earth formed. this dating is based on evidence from radiometric age-dating of meteorite material and is consistent with the radiometric ages of the oldest-known terrestrial and lunar samples.

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation: