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TLS Online TPP Program

#Question id: 5315

In humans, the embryonic and fetal forms of hemoglobin have a higher affinity for oxygen than that of adults. Why is this the case?

#Unit 11. Evolution and Behavior

  1. Nonidentical genes produce different versions of globins during development.

  2. Pseudogenes interfere with gene expression in adults.

  3. The attachment of methyl groups to cytosine following birth changes the type of hemoglobin produced.

  4. Histone proteins change shape during embryonic development.

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TLS Online TPP Program

#Question id: 11158

#Unit 9. Diversity of Life Forms

Which of these items does not necessarily exist in a simple linear relationship with the number of gene-duplication events when placed as the label on the vertical axis of the graph below?
TLS Online TPP Program

#Question id: 1343

#Unit 4. Cell Communication and Cell Signaling

Which of the following is not an example of a type of extracellular matrix?
TLS Online TPP Program

#Question id: 23855

#Unit 13. Methods in Biology

Dideoxyribonucleotide chain-termination is a method of
TLS Online TPP Program

#Question id: 24670

#Unit 2. Cellular Organization

Which of the following statement(s) is (are) true of V-class proton pumps?

a. They are ATPases.

b. They are present in membranes of plant vacuoles.

c. They serve to decrease the pH inside a lysosome.

d. They can acidify the lumen of an organelle (or the extracellular space) because these pumps are electrogenic
TLS Online TPP Program

#Question id: 5418

#General Aptitude

In a class of 25 students, the average merks obtained by 23 of them in an examination was 50. The remaining two got 0 each. By how much did the two lower the average for the class?