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

Biology & Microbiology

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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).

Biology & Microbiology

The top priority for energy allocation in animals is ____

a. maintenance metabolism b. growth c. reproduction d. storage

e. growth of sexually dimorphic features

Biology & Microbiology

Which atom would most likely be involved in an ionic bond?

a. hydrogen b. oxygen c. sodium d. nitrogen e. helium

Biology & Microbiology

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

Biology & Microbiology