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TLS Online TPP Program

#Question id: 41075

Q. what is the specific role of Bactoprenol (C55 lipid carrier) in the synthesis of peptidoglycan?

#Unit 2. Cellular Organization
  1. It hydrolyzes the beta-1,4 glycosidic bonds to create insertion points in the existing cell wall.
  2. It makes the NAM-NAG-pentapeptide precursors hydrophobic, allowing them to flip across the cytoplasmic membrane.
  3. It catalyzes the formation of new glycosidic bonds to extend the sugar backbone.
  4. It cross-links the peptide side chains, releasing D-Alanine as an energy source.
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TLS Online TPP Program

#Question id: 10983

#Unit 7. System Physiology – Animal

If the S-A node discharges at 0.00 seconds, when will the action potential normally arrive at the AV bundle (bundle of His)?
TLS Online TPP Program

#Question id: 10984

#Unit 7. System Physiology – Animal

Which of the following are caused by acetylcholine?
TLS Online TPP Program

#Question id: 10985

#Unit 7. System Physiology – Animal

What is the membrane potential (threshold level) at which the S-A node discharges?
TLS Online TPP Program

#Question id: 10986

#Unit 7. System Physiology – Animal

Which of the following conditions at the A-V node will cause a decrease in heart rate?
TLS Online TPP Program

#Question id: 10987

#Unit 7. System Physiology – Animal

If the ventricular Purkinje fibers become the pacemaker of the heart, what is the expected heart rate?
TLS Online TPP Program

#Question id: 10988

#Unit 7. System Physiology – Animal

What is the normal total delay of the cardiac impulse in the A-V node and the A-V bundle system?