Which of the following statements are true? (i) the pKa of thiols is similar to that to phenols (ii) little or no hydrogen bonding occurs between thiol molecules (iii) thiols and disulfides are important in nucleic acid chemistry
A) (i) and (ii) only
B) (i) and (iii) only
C) (ii) and (iii) only
D) (i), (ii) and (iii)
A
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Darwin’s studies of animals in the Galapagos Islands were important in the development of the
theory of evolution. Indicate whether the statement is true or false.
Who is considered the father of physical oceanography?
a. Charles Wilkes b. Matthew Maury c. James Cook d. Charles Darwin e. John Murray
Which property of waves has been most important in allowing seismologists to identify the boundaries of the inner core/outer core and the outer core/mantle?
A) wave reflection B) wave amplitude C) wave velocity D) wave refraction
South Sudan broke away from Sudan in 2011. Explain at least one reason why Nigeria has avoided splintering in this way
What will be an ideal response?