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TLS Online TPP Program

#Question id: 13216

Which statements is INCORRECT about this figure?


#Unit 6. System Physiology – Plant
  1. If the concentration of potassium chloride is higher in compartment A ([KCl]A > [KCl]B), potassium and chloride ions will diffuse at a higher rate into compartment B
  2. If membrane are more permeable to K+ tham to Cl-,  K+ will diffuse out of the cell (compartment A ) faster than Cl–, causing the cell to develop a negative electric charge with respect to the medium
  3. Diffusion of K+ would carry charges across the membrane until the membrane potential balanced the concentration gradient, Transport would then be at equilibrium, even though the concentration gradients were unchanged
  4. If membrane are more permeable to K+ tham to Cl-,  K+ will diffuse out of the cell (compartment A ) faster than Cl–, causing the cell to develop a positive electric charge with respect to the medium
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TLS Online TPP Program

#Question id: 33353

#Unit 1. Molecules and their Interaction Relevant to Biology

Two proteins, X and Y, bind to the same ligand, A, with the binding curves shown below. Which statement is incorrect?
TLS Online TPP Program

#Question id: 33354

#Unit 1. Molecules and their Interaction Relevant to Biology

Oxygen binding to iron in heme can shown as
TLS Online TPP Program

#Question id: 33355

#Unit 1. Molecules and their Interaction Relevant to Biology

Which statement stands incorrect
TLS Online TPP Program

#Question id: 33356

#Unit 1. Molecules and their Interaction Relevant to Biology

Hemoglobin undergoes substantial changes in quaternary structure on oxygen binding: the a1b1 and a2b2 dimers rotate with respect to each other by
TLS Online TPP Program

#Question id: 33357

#Unit 1. Molecules and their Interaction Relevant to Biology

Protein A has a binding site for ligand X with a Kd of 10-6 µM. Protein B has a binding site for ligand X with a Kd of 10-9 µM. Which statement is incorrect?
TLS Online TPP Program

#Question id: 33358

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following situations would produce a Hill plot with n<  1.0?
(a) The protein has multiple subunits, each with a single ligand-binding site. Binding of ligand to one site decreases the binding affinity of other sites for the ligand.
(b) The protein is a single polypeptide with two ligand-binding sites, each having a different affinity for the ligand.
(c) The protein is a single polypeptide with a single ligand-binding site.