Which of the following defines the primary structure of proteins?
A) the geometric arrangement of the backbone atoms
B) the geometric arrangement of the side chains
C) the sequence of the amino acids
D) all of the above
C
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The Patagonia region of Chile and Argentina features a large, elongated glacier approximately 90 km (56 mi) wide and 360 km (224 mi) long. This is an example of a(n)
A) alpine glacier. B) ice sheet. C) ice cap. D) ice field.
Salt wedging is most closely associated with ________
A) chemical weathering B) humid climates C) freeze/thaw cycles D) capillary action E) plant roots
What is the angle of the sun in Toronto, Ontario (latitude 44°N) on December 21?
A. 16.5° B. 18.5° C. 20.5° D. 22.5°
Which of the following is true of integral membrane proteins?
A) Both the inner and outer surfaces involve primarily hydrophilic groups. B) Both the inner and outer surfaces involve primarily hydrophobic groups. C) The outer surface involves primarily hydrophilic groups and most of the hydrophobic groups must turn inward. D) The outer surface involves primarily hydrophobic groups and most of the hydrophilic groups must turn inward.