Bacterial artificial chromosomes (BACs), cosmids, phages, plasmids and yeast artificial chromosomes (YACs) are all commonly used cloning vectors that differ in their cloning capacities, with a range from approximately 100 bp to 1000 kb. Which of the following is the increasing cloning capacity?

#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?

#Question id: 11753

#Unit 7. System Physiology – Animal

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

#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?

#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?

#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?

#Question id: 11757

#Unit 7. System Physiology – Animal

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