TLS Online TPP Program

#Question id: 384


A solution was prepared by dissolving 0.02 moles of acetic acid (HOAc; pKa = 4.8) in water to give 1 liter of solution. What is the pH? To this solution was then added 0.008 moles of concentrated sodium hydroxide (NaOH). What is the new pH? (In this problem, you may ignore changes in volume due to the addition of NaOH).

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. 7.09

  2. 5.42

  3. 4.63

  4. 8.54

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TLS Online TPP Program

#Question id: 27977

#Unit 1. Molecules and their Interaction Relevant to Biology

Respiratory complexes tightly associate with each other in the inner membrane to form respirasomes 
a. I, II, III by Cytcox
b. III-IV by UQH2 ⇌ UQ 
c. I, II, III by UQH2 ⇌ UQ 
d. III-IV by Cytcox

TLS Online TPP Program

#Question id: 27978

#Unit 1. Molecules and their Interaction Relevant to Biology

Alternative oxidase are characteristically found in plant responsible for the

TLS Online TPP Program

#Question id: 27979

#Unit 1. Molecules and their Interaction Relevant to Biology

In the Alternative respiratory pathway 
a. the external NADH dehydrogenase is rotenone insensitive 
b. the external NADH dehydrogenase is cyanide-resistant
c. alternative oxidase is cyanide-resistant 
d. alternative oxidase is rotenone insensitive

TLS Online TPP Program

#Question id: 27980

#Unit 1. Molecules and their Interaction Relevant to Biology

The proton-motive force has 
a. chemical potential energy due to proton-proton repulsion
b. chemical potential energy due to H+ difference in the two regions separated by the membrane 
c. electrical potential energy H+ difference in the two regions separated by the membrane 
d. electrical potential energy due to proton-proton repulsion

Which of the following is true

TLS Online TPP Program

#Question id: 27981

#Unit 1. Molecules and their Interaction Relevant to Biology

The free energy required for the release of ATP from FO-F1 is provided by

TLS Online TPP Program

#Question id: 27982

#Unit 1. Molecules and their Interaction Relevant to Biology

Reactions catalyzed by FoF1
a. Perform by mechanism of rotational catalysis 
b.. Gamma rotate 120 degree to contact with beta subunit 
c. Gamma rotate 360 degree to contact with beta subunit 
d. beta rotate 120 degree to contact with Gamma

Which of the following is true