TLS Online TPP Program

#Question id: 2237


Glucose enters erythrocytes via a GLUT-1 uniporter. As the levels of glucose in the bloodstream decrease between meals, what happens to the glucose in the cells?

#Unit 2. Cellular Organization
  1. Glucose leaves the cell through the GLUT-1 uniporter, traveling down the new concentration gradient.

  2. Glucose remains in the cell because uniporters can only transport in one direction.

  3. Glucose remains in the cell because the GLUT-1 uniporters are gated and the gates close at low glucose concentrations.

  4. Glucose remains in the cell because it has been phosphorylated and no longer has affinity for the GLUT-1 uniporter.

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TLS Online TPP Program

#Question id: 27974

#Unit 1. Molecules and their Interaction Relevant to Biology

During the reduction of C in Q cycle four proton transported from matrix to IMS in which

TLS Online TPP Program

#Question id: 27975

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following set of condition During Q cycle, will favours the formation of ROS generation
(a) mitochondria are not making ATP and therefore have a large proton-motive force and a high ratio of QH2/Q
(b) mitochondria are making ATP and therefore have a large proton-motive force and a high ratio of Q/QH2 
(c) there is a high NAD/NADH ratio in the matrix
(d) there is a high NADH/NAD ratio in the matrix

TLS Online TPP Program

#Question id: 27976

#Unit 1. Molecules and their Interaction Relevant to Biology

Ubiquinone (Q) is the point of entry from 4 major entry points
a. NADH
b. Succinate (MM)
c. Glycerol 3-phosphate dehydrogenase (Cytosol)
d. Acyl-CoA dehydrogenase

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