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TLS Online TPP Program

#Question id: 24213

#Unit 1. Structure and Function of Biomolecules

The protein inhibitor of hexokinase IV is a nuclear binding protein that draws hexokinase IV into the nucleus when the fructose 6-phosphate concentration in liver is high and releases it to the cytosol when the glucose concentration is high.
PFK-1 ATP inhibits PFK-1 by binding to an allosteric site and lowering the affinity of the enzyme for its substrate fructose 6-phosphate
Hexokinase requires Mg+2 for its activity, because the true substrate of the enzyme is MgATP4- but not the MgATP2- complex.
When the level of AMP increases, it promotes glycolysis by stimulating PFK-1 by inhibiting FBPase-1

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#Question id: 7595

#Unit 1. Structure and Function of Biomolecules

#Question id: 5360

#Unit 1. Structure and Function of Biomolecules

Following some different genetic disorder traces in families.

Which of the following possible mode of inheritance in the Family A, B, C and D respectively

#Question id: 2271

#Unit 1. Structure and Function of Biomolecules

Depolymerization of microtubules is inhibited by

#Question id: 2290

#Unit 1. Structure and Function of Biomolecules

The cytoskeleton includes all of the following except

#Question id: 2585

#Unit 1. Structure and Function of Biomolecules

Which of the following is the correct sequence that describes the excitation and contraction of a skeletal muscle fiber?

A. Tropomyosin shifts and unblocks the cross-bridge binding sites.

B. Calcium is released and binds to the troponin complex.

C. Transverse tubules depolarize the sarcoplasmic reticulum.

D. The thin filaments are ratcheted across the thick filaments by the heads of the myosin molecules using energy from ATP.

E. An action potential in a motor neuron causes the axon to release acetylcholine, which depolarizes the muscle cell membrane.

#Question id: 12184

#Unit 1. Structure and Function of Biomolecules