TLS Online TPP Program

#Question id: 4347


According to the lac operon model proposed by Jacob and Monod, what is predicted to occur if the operator is removed from the operon?

#Unit 3. Fundamental Processes
  1. The lac operon would be transcribed continuously.

  2. Only lacZ would be transcribed.

  3. Only lacY would be transcribed.

  4. Galactosidase permease would be produced, but would be incapable of transporting lactose.

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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?

TLS Online TPP Program

#Question id: 11756

#Unit 7. System Physiology – Animal

A 65-year-old man has a heart attack and experiences cardiopulmonary arrest while being transported to the emergency room. The following laboratory values are obtained from arterial blood:

plasma pH = 7.12,

plasma PCO2 = 60mm Hg, and

plasma HCO3− concentration = 19 mEq/L.

Which of the following best describes his acid-base disorder?

TLS Online TPP Program

#Question id: 11757

#Unit 7. System Physiology – Animal

Which of the following tends to decrease potassium secretion by the cortical collecting tubule?

TLS Online TPP Program

#Question id: 11758

#Unit 7. System Physiology – Animal

In normal kidneys, which of the following is true of the osmolarity of renal tubular fluid that flows through the early distal tubule in the region of the macula densa?

TLS Online TPP Program

#Question id: 11759

#Unit 9. Diversity of Life Forms

Thread-like pseudopods that can perform phagocytosis are generally characteristic of which group?

TLS Online TPP Program

#Question id: 11760

#Unit 9. Diversity of Life Forms

Which of the following produce the dense glassy ooze found in certain areas of the deep-ocean floor?