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TLS Online TPP Program

#Question id: 2242

What two features of the structure of cholesterol make it somewhat amphipathic?

#XL - Q Biochemistry

  1. The single hydroxyl along with the hydrocarbon nature of the remainder of the molecule

  2. The long, branched hydrocarbon along with the four hydrocarbon rings

  3. The five methyl groups along with the hydrocarbon chain

  4. The three six-membered rings along with the single five-membered ring

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TLS Online TPP Program

#Question id: 373

#XL - S Microbiology

What is the hydroxyl ion (OH-) concentration of a solution of pH 8?
TLS Online TPP Program

#Question id: 374

#XL - Q Biochemistry

The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:
TLS Online TPP Program

#Question id: 374

#XL - S Microbiology

The pH of a sample of blood is 7.4, while gastric juice is pH 1.4.  The blood sample has:
TLS Online TPP Program

#Question id: 375

#XL - S Microbiology

The aqueous solution with the lowest pH is:
TLS Online TPP Program

#Question id: 376

#XL - S Microbiology

Phosphoric acid is tribasic, with pKa of 2.14, 6.86 and 12.4. The ionic form that predominates at pH 3.2 is
TLS Online TPP Program

#Question id: 377

#XL - S Microbiology

The aqueous solution with the highest pH is: