TLS Online TPP Program

#Question id: 3828


Why does E. coli need both DNA polymerase III and DNA polymerase I?

#Unit 3. Fundamental Processes
  1. DNA polymerase III lacks the 5ʹ → 3ʹ exonuclease activity needed to remove RNA primers.

  2. Each polymerase is specific for only one strand of DNA. DNA polymerase III acts nly on the leading strand, and DNA polymerase I acts only on the lagging strand.

  3. DNA polymerase I is needed to join the Okazaki fragments.

  4. The DNA replication is bidirectional; one polymerase is used for each direction.

More Questions
TLS Online TPP Program

#Question id: 11750

#Unit 7. System Physiology – Animal

Which of the following best describes the concept of specificity in sensory nerve fibers that transmit only one modality of sensation?

TLS Online TPP Program

#Question id: 11751

#Unit 7. System Physiology – Animal

Which of the following is an encapsulated receptor found deep in the skin throughout the body as well as in fascial layers where they detect indentation of the skin (pressure) and movement across the surface (vibration)?

TLS Online TPP Program

#Question id: 11752

#Unit 7. System Physiology – Animal

Which of the following substances enhances the sensitivity of pain receptors but does not directly excite them?

TLS Online TPP Program

#Question id: 11753

#Unit 7. System Physiology – Animal

Which of the following is an important functional parameter of pain receptors?

TLS Online TPP Program

#Question id: 11754

#Unit 7. System Physiology – Animal

Use the following clinical laboratory test results:

Urine flow rate = 1 ml/min

Urine inulin concentration = 100 mg/ml

Plasma inulin concentration = 2 mg/ml

Urine urea concentration = 50 mg/ml

Plasma urea concentration = 2.5 mg/ml

What is the net urea reabsorption rate?

TLS Online TPP Program

#Question id: 11755

#Unit 7. System Physiology – Animal

Which of the following solutions when infused intravenously would result in an increase in extracellular fluid volume, a decrease in intracellular fluid volume, and an increase in total body water after osmotic equilibrium?