The number of forward mutations is equal to the number of reverse mutations then

a) Population is in equilibrium for forward and reverse mutation rates

b) The population is being in Hardy–Weinberg equilibrium

c) No further change in allelic frequency

#Question id: 361

#Section 4: Fundamentals of Biological Engineering

Calculate the percentage of histidine that has its imidazole side chain protonated at pH 7.3. The pKa values for histidine are pK1 = 1.8, pK2 (imidazole) = 6.0, and pK3 = 9.2.

#Question id: 362

#Section 4: Fundamentals of Biological Engineering

A 0.01 M solution of a substance has a pH of 2. What can you conclude about this substance?

#Question id: 363

#Section 4: Fundamentals of Biological Engineering

What is the pH of a mixture of 0.042 M NaH2PO4 and 0.058 M Na2HPO4? If 1.0 mL of 10.0 M NaOH is added to a liter of the buffer prepared, how much will the pH change? (pKa = 6.86)

#Question id: 364

#Section 4: Fundamentals of Biological Engineering

 A solution contains 0.0000001 (10-7) moles of hydrogen ions [H+] per liter. Which of the following best describes this solution?

#Question id: 365

#Section 4: Fundamentals of Biological Engineering

Water is a polar molecule: the oxygen atom with its unshared electrons carries a partial negative charge (δ−) of ___________, and the hydrogen atoms each carry a partial positive charge (δ+) of __________, where e is the charge of the electron.

#Question id: 366

#Section 4: Fundamentals of Biological Engineering

What is the pH of a solution with a hydroxyl ion (OH-) concentration of 10-10 M?