Secondary structure is associated with which of the following?
A) the sequence of amino acids
B) hydrogen bonding within the backbone
C) hydrogen bonding between the side chains
D) the interaction of protein subunits
B
You might also like to view...
What best describes what happens when an acid such as HCl is mixed with water?
A. A hydroxide ion from the water is transferred to the HCl molecule to form a proton and hydronium ion. B. The proton chemically bonded to the chlorine is transferred to a water molecule and forms a chloride ion and a hydronium ion. C. HCl is not an acid. D. A proton from the chlorine nucleus is ejected and captured by a water molecule to form a negatively charged HCl and a new hydronium ion. E. none of the above
Why might a high-formula-mass alcohol be insoluble in water?
A. In order for two substance to be soluble in each other, their molecules need to be of comparable mass. B. The bulk of a high-formula-mass alcohol likely consists of nonpolar hydrocarbons. C. A high-formula-mass alcohol would be too attracted to itself to be soluble in water. D. Such an alcohol would likely be in a solid phase.
Persistent drought is often associated with
A) a series of strong cyclones. B) persistent zonal patterns in upper-level air flows. C) the occurrence of moving meridional patterns in upper-level winds. D) the coast of British Columbia.
Covalent bonds link a water molecule's ________.
A. positively charged oxygen atom and positively charged hydrogen atoms B. negatively charged hydrogen atoms and negatively charged oxygen atom C. positively charged hydrogen atoms and negatively charged oxygen atom D. positively charged oxygen atom and negatively charged hydrogen atoms E. They do not bond atoms.