Quaternary structure of a protein refers to ________
A) the sequence of amino acids in a polypeptide
B) alpha-helical or beta-sheet arrangements of protein structure
C) three-dimensional coil of a polypeptide around itself
D) the association of multiple polypeptide subunits to form a functional protein
E) the number of amino acids in a polypeptide chain
D
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Reduction is defined as the addition of ________. In biological systems, these are usually accompanied by protons in a process called ________.
Fill in the blank(s) with the appropriate word(s).
The top priority for energy allocation in animals is ____
a. maintenance metabolism b. growth c. reproduction d. storage
e. growth of sexually dimorphic featuresWhich atom would most likely be involved in an ionic bond?
a. hydrogen b. oxygen c. sodium d. nitrogen e. helium
Which of the following genetic disorders is caused by a dominant allele but does not produce symptoms until the affected individual is well into adulthood?
A) Huntington disease B) Down syndrome C) Turner syndrome D) sickle-cell anemia E) hemophilia