Vinblastine is a standard chemotherapeutic drug used to treat cancer. Because it interferes with the assembly of microtubules, its effectiveness must be related to

TLS Online TPP Program

#Question id: 32222

#Unit 2. Cellular Organization

Mutations in any of a dozen different peroxins, the most common being Pex1, cause an impairment in peroxisomal protein import, leads to:

TLS Online TPP Program

#Question id: 15604

#Unit 12. Applied Biology

The bacteria which cause septicaemia are fast becoming resistant to the antibiotics used for controlling them. Which one of the following explanations fits best?

TLS Online TPP Program

#Question id: 4448

#Unit 3. Fundamental Processes

Three defined steps in a transcription cycle; choose correct one

1a. Closed complex	In this form, the DNA remains double-stranded, and the enzyme is bound to one face of the helix. I
1b. Open complex	In which the DNA strands separate over a distance of 13 bp around the start site to form the transcription bubble. In the next stage of initiation,
2. Promoter escape	Incorporation of the first 10 or so ribonucleotides is a rather inefficient process, and at that stage, the enzyme often releases short transcripts and then begins synthesis again
3. Initial transcribing complex.	Once an enzyme makes a transcript longer than 10 nucleotides, it is said to have

TLS Online TPP Program

#Question id: 1164

#Unit 4. Cell Communication and Cell Signaling

Calmodulin:

TLS Online TPP Program

#Question id: 3566

#Unit 8. Inheritance Biology

Two organisms, with genotypes BbDD and BBDd, are mated. Assuming independent assortment of the B/b and D/d genes, determine the genotypic ratios in offspring that would occur.