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TLS Online TPP Program

#Question id: 12276

Because the usual rate of phosphate filtration exceeds the transport maximum for phosphate reabsorption, which of the following is true?

#Unit 7. System Physiology – Animal
  1. All the phosphate that is filtered is reabsorbed
  2. More phosphate is reabsorbed than is filtered
  3. Phosphate in the tubules can contribute significantly to titratable acid in the urine
  4. The “threshold” for phosphate is usually not exceeded
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TLS Online TPP Program

#Question id: 19353

#Unit 12. Applied Biology

Gene uidA encodes the enzyme P-glucourinidase which acts on the substrate 
TLS Online TPP Program

#Question id: 719

#Unit 1. Molecules and their Interaction Relevant to Biology

Suppose that a 40-residue segment of a protein folds into a two-stranded antiparallel β structure with a 4-residue hairpin turn. What is the longest dimension of this motif?
TLS Online TPP Program

#Question id: 10201

#Unit 6. System Physiology – Plant

Chloroplasts orientation in Algae is controlled by
TLS Online TPP Program

#Question id: 10172

#Unit 6. System Physiology – Plant

leaves continuously adjust the orientation of their laminae such that they remain perpendicular to the sun’s ray and maximize light absorption by
TLS Online TPP Program

#Question id: 10979

#Unit 7. System Physiology – Animal

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