Practice Questions

TLS Online TPP Program

#Question id: 1434

A bone tumor sample appears to be heterozygous for a p53 mutation. The most likely explanation for this finding is:

#Unit 4. Cell Communication and Cell Signaling

Mutated p53 is an oncogene.
The p53 mutation is resulting in a dominant negative p53 protein.
The p53 mutation is resulting in a premature stop codon, and no functional protein is made from that allele.
There was a mistake in labeling the tissue sample—all tumors musts lack p53.

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TLS Online TPP Program

#Question id: 11542

#Unit 7. System Physiology – Animal

Different body cells can respond differently to the same polypeptide hormones because ________.

TLS Online TPP Program

#Question id: 10332

#Unit 9. Diversity of Life Forms

The four-chambered hearts of birds and the four-chambered hearts of mammals evolved independently of each other. If one were unaware of this independence, then one might logically conclude that

TLS Online TPP Program

#Question id: 23119

#Unit 2. Cellular Organization

Disparity in genome content vs evolutionary status is called as

TLS Online TPP Program

#Question id: 2439

#Unit 2. Cellular Organization

α- and β-tubulin

a. are highly conserved.

b. bind GTP.

c. hydrolyze GTP to GDP.

d. are found in all eukaryotes.