Practice Questions

TLS Online TPP Program

#Question id: 5318

Humans have 23 pairs of chromosomes, and chimps have 24 pairs of chromosomes. What is the most likely explanation for these differences in human and chimp genomes?

#Unit 11. Evolution and Behavior

The common ancestor of humans and chimps had 24 pairs of chromosomes. During human evolution, two human chromosomes fused end to end.
In the evolution of chimps, new adaptations resulted from additional chromosomal material.
At some point in evolution, human and chimp ancestors reproduced with each other.
Errors in mitosis resulted in an additional pair of chromosomes in chimps.

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TLS Online TPP Program

#Question id: 851

#Unit 1. Molecules and their Interaction Relevant to Biology

Methods is the Rosetta program, formulated by David Baker. To satisfy the program’s computational needs, a volunteer network of ∼100,000 computers, known as Rosetta@home, provides the 500,000 or so hours of processing time required to generate a structure;

TLS Online TPP Program

#Question id: 10969

#Unit 7. System Physiology – Animal

Which of the following will result in a transfusion reaction? Assume that the patient has never had a transfusion.

TLS Online TPP Program

#Question id: 31032

#Unit 4. Cell Communication and Cell Signaling

Which of the following amino acid phosphorylation is required for the activation of PKA?

TLS Online TPP Program

#Question id: 10941

#Unit 7. System Physiology – Animal

In a normal healthy person, which of the following blood components has the shortest life span?