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TLS Online TPP Program

#Question id: 343

Assume that acid rain has lowered the pH of a particular lake to pH 5.0. What is the hydroxide ion concentration of this lake?

#Unit 1. Molecules and their Interaction Relevant to Biology

  1. 1 × 10^-9 mol of hydroxide ions per liter of lake water

  2. 1 × 10^-5 mol of hydroxide ions per liter of lake water

  3. 5.0 M hydroxide ion

  4. 5.0 × 10^-5 mol of hydroxide ions per liter of lake water

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TLS Online TPP Program

#Question id: 22973

#Unit 7. System Physiology – Animal

Which enzyme converts 25-hydroxycholecalciferol to the active form, 1,25-dihydroxycholecalciferol.
TLS Online TPP Program

#Question id: 22974

#Unit 7. System Physiology – Animal

In the intestine, 1,25-dihydroxycholecalciferol induces the synthesis of 
TLS Online TPP Program

#Question id: 22975

#Unit 7. System Physiology – Animal

1,25-dihydroxycholecalciferol stimulates the,
a. Secretion of phosphate ions from kidney
b. Secretion of calcium from kidney
c. Reabsorption of calcium from kidney
d. Reabsorption of phosphate ions from kidney
TLS Online TPP Program

#Question id: 22976

#Unit 7. System Physiology – Animal

In bone, 1,25-dihydroxycholecalciferol acts synergistically with PTH to stimulate 
TLS Online TPP Program

#Question id: 23025

#Unit 12. Applied Biology

Which bioremediation technique includes mixing of contaminated water and soil, fertilizers and carbon dioxide in a bioreactor to stimulate biodegradation
TLS Online TPP Program

#Question id: 23026

#Unit 12. Applied Biology

A process using microbes to convert toxic industrial wastes to less toxic or non-toxic compounds is