Practice Questions

TLS Online TPP Program

#Question id: 4529

The “architectural” protein IHF (integration host factor) binds to sites on DNA and bends it., which statement not exist.

#Unit 3. Fundamental Processes

Mechanisms exist to help communication between closely bound proteins.
IHF sites are found between the activator-binding sites and the promoter.
By bending the DNA, IHF helps the DNA-bound activator reach RNA polymerase at the promoter.
This phenomenon known as “action at a distance,”

More Questions

#Question id: 807

#Unit 1. Structure and Function of Biomolecules

Which of the following forces can stabilize a normal DNA double-helix?

#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.