Practice Questions

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

Nonidentical genes produce different versions of globins during development.
Pseudogenes interfere with gene expression in adults.
The attachment of methyl groups to cytosine following birth changes the type of hemoglobin produced.
Histone proteins change shape during embryonic development.

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TLS Online TPP Program

#Question id: 2685

#Unit 2. Cellular Organization

There are about 3 billion chemical base pairs in human DNA. Approximately what percent of these base pairs actually code for genes?

TLS Online TPP Program

#Question id: 26829

#Unit 10. Ecological Principles

Natural Enemies Promote

TLS Online TPP Program

#Question id: 11854

#General Aptitude

Find the least number which when divided by 20,25,35 and 40 leaves reminders 14,19,29 and 34 respectively.

TLS Online TPP Program

#Question id: 12076

#Unit 7. System Physiology – Animal

Furosemide (Lasix) is a diuretic that also produces natriuresis. Which of the following is an undesirable side effect of furosemide due to its site of action on the renal tubule?

TLS Online TPP Program

#Question id: 1003

#Unit 1. Molecules and their Interaction Relevant to Biology

The glucose-alanine cycle provides ________.