TLS Online TPP Program

#Question id: 380


The Henderson-Hasselbalch equation:

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. allows the graphic determination of the molecular weight of a weak acid from its pH alone.

  2. is equally useful with solutions of acetic acid and of hydrochloric acid.

  3. relates the pH of a solution to the pKa and the concentrations of acid and conjugate base.

  4. does not explain the behavior of di- or tri-basic weak acids

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TLS Online TPP Program

#Question id: 10922

#Unit 6. System Physiology – Plant

The non-reducing sugar sucrose is most commonly translocated in the phloem rather than reducing sugar. Why?

 a.) because they are less reactive than their reducing counterparts

 b.) because sucrose contains more energy than a monosaccharides

 c.) because the ketone or aldehyde group is reduced to an alcohol or combined with a similar group on another sugar so as not to be oxidized

 Which one of the following statements is true about translocation of non-reducing sugar?

TLS Online TPP Program

#Question id: 10923

#Unit 6. System Physiology – Plant

In the modification of translocation pathways, Interference with a translocation pathway by wounding or pruning can alter the patterns established by proximity and vascular connections. In the absence of direct connections between source and sink, vascular interconnections, called

TLS Online TPP Program

#Question id: 10924

#Unit 6. System Physiology – Plant

Due to damage exudation of sap from cut petioles or stems takes place they can be collected. However, quantities of collected sap are small, and the method is technically difficult. A preferable approach for collecting exuded sap is to use an

TLS Online TPP Program

#Question id: 10925

#Unit 7. System Physiology – Animal

During the second trimester of pregnancy, where is the predominant site of red blood cell production?

TLS Online TPP Program

#Question id: 10926

#Unit 7. System Physiology – Animal

Following a blood donation, red cell production begins to increase in

TLS Online TPP Program

#Question id: 10927

#Unit 7. System Physiology – Animal

A 62-year-old female arrives for her annual physical. She complains of itching in her hands along with headaches and vertigo. A routine complete blood count (CBC) shows red blood cells (RBCs) of 8.2 million/μl, white blood cells (WBCs) 37,000/μl, and platelets 640,000/μl. Her erythropoietin levels are lower than normal. The primary diagnosis would be