The pathway for polypeptides exported from E. coli includes the following steps, which occur in what order for correct export?

1.  A chaperone, SecA, binds to the polypeptide.

2.  A chaperone, SecB, binds to the polypeptide.

3.  ATP is hydrolyzed by Sec A.

4.  SecA pushes 20 amino acids of the polypeptide into the translocation complex.

TLS Online TPP Program

#Question id: 10197

#Unit 6. System Physiology – Plant

Light compensation point found at which;

TLS Online TPP Program

#Question id: 11480

#Unit 7. System Physiology – Animal

Most of the chemosensory neurons arising in the nasal cavity have axonal projections that terminate in the ________.

TLS Online TPP Program

#Question id: 11958

#Unit 7. System Physiology – Animal

Fat digestion yields fatty acids and glycerol, whereas protein digestion yields amino acids; both digestive processes ________.

TLS Online TPP Program

#Question id: 11003

#Unit 7. System Physiology – Animal

Which of the following statements about cardiac muscle is most accurate?

TLS Online TPP Program

#Question id: 5022

#Unit 11. Evolution and Behavior

Almost all of the major animal body plans seen today appeared in the fossil record over 500 million years ago at the beginning of the