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TLS Online TPP Program

#Question id: 9221

The primary difference between the small-population approach and the declining-population approach to biodiversity recovery is that ________.

#Unit 9. Diversity of Life Forms

  1. small-population approach is interested in bolstering the genetic diversity of a threatened population rather than the environmental factors that caused the population's decline

  2. small-population approach applies for conservation biologists when population numbers fall below 500

  3. declining-population approach would likely involve bringing together individuals from scattered small populations to interbreed in order to promote genetic diversity

  4. small-population approach would investigate and eliminate all of the human impacts on the habitat of the species being studied for recovery

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TLS Online TPP Program

#Question id: 294

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following pairs of amino acids would you predict to only participate in Van der Waals interactions in the three dimensional folding of a protein:
TLS Online TPP Program

#Question id: 88

#Unit 1. Molecules and their Interaction Relevant to Biology

Anomers can be interconverted ________.
TLS Online TPP Program

#Question id: 1232

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following mutations might confer a competitive advantage to an athlete by raising his or her hematocrit?

a. excess production of erythropoietin                       

b. decreased production of erythropoietin

c. EpoR that cannot bind STAT5                  

d. EpoR that cannot bind SHP1

e. EpoR that cannot bind JAK2
TLS Online TPP Program

#Question id: 27070

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements is correct regarding the stereochemistry of Thr, Ile 
1. Thr, Ile is special case because of two chiral center exist in L-Ile in 2R,3S and L-Thr in 2R,3S configuration 
2. Thr, Ile is special case because of two chiral center exist in D-Ile in 2R,3S and D-Thr in 2R,3S configuration 
3. Thr, Ile is special case because of two chiral center exist in L–Ile in 2S,3R and L–Thr in 2S,3R 
4. Thr, Ile is special case because of two chiral center exist in D–Ile in 2S,3R and D–Thr in 2S,3R
TLS Online TPP Program

#Question id: 27069

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct option regarding the stereochemistry of given compound 
TLS Online TPP Program

#Question id: 27068

#Unit 1. Molecules and their Interaction Relevant to Biology

Isoleucine and Threonine have two chiral carbons so exists in multiple RS configuration, choose the correct option regarding the given fig.
1. a is D-threonine is (2S, 3S) threonine
2. b is L-threonine is (2R,3S) threonine
3. a is L-threonine is (2S, 3R) threonine
4. b is D-threonine is (2R,3S) threonine