Which of the following statements is true regarding protein structure determination?
A.) determination of a protein's structure by xray crystallography does not require prior knowledge of its amino acid sequence
B.) mass spectrometry is the fastest way to determine the 3D structure of a polypeptide or protein, regardless of its size
C.) nuclear magnetic resonance can be used to determine the structure of proteins that are too large to crystallize
D.) mass spectrometry can be used to determine the amino acid sequences of a complex mix of different proteins
E.) a protein's 3D structure can be reliably predicted from its amino acid sequence by computer algorithms that access the vast quantities of structural information archived in public databases
Ans: D.) mass spectrometry can be used to determine the amino acid sequences of a complex mix of different proteins
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Which of the following best describes the special "high-energy" bond of ATP?
A) phosphoester B) phosphoanhydride C) hydrogen D) ionic E) hydrogenation
In regards to a species' life history, equilibrium species
A. have only a few offspring. B. are short lived. C. reproduce at an early age. D. have a large number of offspring. E. give very little care to their offspring.
Drosophila eggs acquire an initial asymmetry before fertilization as a result of
A. maternal DNA molecules being deposited in one end of the egg. B. nurse cell migration to one end of the egg. C. production of bicoid proteins in one end of the egg. D. attachments of cadherins to one end of the cell. E. maternal mRNA being deposited in one end of the egg.
Describe the various scientific roles that zoos fulfill.
What will be an ideal response?