Many features of a protein change when it is moved into an environment with a different pH. Which of the following features would stay the same?
A) amino acid sequence of the protein
B) tertiary structure of the protein
C) function of the protein
D) shape of the protein
E) binding properties of the protein
Answer: A
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Derived character states shared by clade members are called
A. ancestral traits. B. homoplasies. C. synapomorphies. D. plesiomorphies. E. symplesiomorphies.
Most O2 is transported in the blood ____
a. dissolved in the plasma b. as bicarbonate ions c. bound to hemoglobin d. as carbon dioxide e. bound to bicarbonate ions
Which animal clade lacks specialized tissues derived from the germ layers of the embryo?
a. Cnidaria b. Ctenophora c. Placozoa d. Bilateria
Which of the following does NOT cycle
through an ecosystem? a. water b. carbon c. energy d. phosphorus e. nitrogen