TLS Online TPP Program

#Question id: 565


A transition-state analog:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. is less stable when binding to an enzyme than the normal substrate.

  2. resembles the active site of general acid-base enzymes.

  3. resembles the transition-state structure of the normal enzyme-substrate complex.

  4. stabilizes the transition state for the normal enzyme-substrate complex.

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TLS Online TPP Program

#Question id: 11017

#Unit 7. System Physiology – Animal

Which of the following is most likely at the “J point” in an EKG of a patient with a damaged cardiac muscle?

TLS Online TPP Program

#Question id: 11018

#Unit 7. System Physiology – Animal

A 50-year-old man has a blood pressure of 140/85 and weighs 200 lb. He reports that he is not feeling well, his EKG has no P-waves, he has a heart rate of 46, and the QRS complexes occur regularly. What is his likely condition?

TLS Online TPP Program

#Question id: 11019

#Unit 7. System Physiology – Animal

An 80-year-old man had an EKG taken at his local doctor’s office, and the diagnosis was atrial fibrillation. Which of the following statements are likely conditions in someone with atrial fibrillation?

TLS Online TPP Program

#Question id: 11020

#Unit 7. System Physiology – Animal

Circus movements in the ventricle can lead to ventricular fibrillation. Which of the following conditions in the ventricular muscle will increase the tendency for circus movements?

TLS Online TPP Program

#Question id: 11021

#Unit 7. System Physiology – Animal

A 75-year-old man goes to the hospital emergency department and faints. Five minutes later he is alert. An EKG shows 75 P waves per minute and 35 QRS waves per minute with a normal QRS width. Which of the following is the likely diagnosis?

TLS Online TPP Program

#Question id: 11027

#Unit 7. System Physiology – Animal

Which of the following is the correct sequence of blood flow in birds and mammals?