A solution with a pH of 9 has ____ times fewer hydrogen ions than a solution with a pH of 6.
A. two
B. four
C. 10
D. 100
E. 1,000
Answer: E
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Which of the following molecules would you predict moves through a lipid bilayer most rapidly?
A. C6H12O6 B. CH3OH C. C2H5OH D. C4H10 E. NH2SO2CH3
Polypeptide chains take on their tertiary structure and assemble with other polypeptide chains in which organelle?
a. ribosomes b. rough endoplasmic reticulum c. smooth endoplasmic reticulum d. Golgi body e. vesicles
Chlamydia trachomatis is commonly transmitted by sexual activity.
Answer the following statement true (T) or false (F)
The geographic isolation of a population from other members of the species and the subsequent evolution of reproductive barriers between it and the parent species describes ________ speciation
A) punctuated B) sympatric C) allopatric D) biogeographic