TLS Online TPP Program

#Question id: 11010


Which of the following best explains how sympathetic stimulation affects the heart?

#Unit 7. System Physiology – Animal
  1. Permeability of the S-A node to sodium decreases
  2. Permeability of the A-V node to sodium decreases
  3. Permeability of the S-A node to potassium increases
  4. There is an increased rate of upward drift of the resting membrane potential of the S-A node
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TLS Online TPP Program

#Question id: 24331

#Unit 4. Cell Communication and Cell Signaling

Select the CORRECT combination by matching the junctions with their principal CAMs or adhesion receptors.

Junctions

Principal CAMs or Adhesion receptors

1. Tight junctions

a. Integrins

2. Gap Junctions

b. Occludin

3. 3-D adhesions

c. Connexin

4. Plasmodesmata

d. Undefined

TLS Online TPP Program

#Question id: 24431

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following option is correct regarding the ATP Synthase
1. ATP Synthase Has Two Functional Domains, Fo and F1
2. It Catalyzes the formation of ATP from ADP and Pi, driven by the flow of protons from the P to the N side of the membrane.
3. ATP synthase produces ATP as protons diffuse back through it from the lumen into the stroma.
4. The molecular structure of the mitochondrial ATP synthase has been determined by X-ray crystallography.

TLS Online TPP Program

#Question id: 24432

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is oligomycin sensitive part of ATP Synthase

TLS Online TPP Program

#Question id: 24433

#Unit 1. Molecules and their Interaction Relevant to Biology

Mitochondrial F1 has nine subunits of five different types, with the composition

TLS Online TPP Program

#Question id: 24434

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following is correct order of proton-driven rotation of the c ring

TLS Online TPP Program

#Question id: 24435

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following factors dictates to makes ensure the rotation of the c ring is essentially unidirectional.