TLS Online TPP Program

#Id: 8480

#Unit 1. Molecules and their Interaction Relevant to Biology

Antiparallel sheets are usually arranged with all their hydrophobic residues on one side of the sheet. 

This requires an alternation of hydrophilic and hydrophobic residues in the primary structure of peptides involved in antiparallel b-sheets because every other side chain projects to the same side of the sheet

TLS Online TPP Program

#Id: 10395

#Unit 4. Cell Communication and Cell Signaling

Leukemias 

a class of sarcomas, grow as individual cells in the blood

TLS Online TPP Program

#Id: 3142

#Unit 7. System Physiology – Animal

Inspiratory reserve volume normally amounts to about 3000 mL

TLS Online TPP Program

#Id: 9813

#Unit 6. System Physiology – Plant

PHYA is the only gene that encodes a Type I phytochrome and predominantly perceives far-red light.

Phytochrome B predominantly perceives red light

TLS Online TPP Program

#Id: 2302

#Unit 3. Fundamental Processes

As RNA polymerase moves along the DNA template, it unwinds the duplex at the front of the bubble (the unwinding point), and the DNA automatically reforms the double helix at the back (the rewinding point). 

1. The length of the transcription bubble is 12 to 14 bp, but the length of the RNA–DNA hybrid within the bubble is only 8 to 9 bp. 

2. As the enzyme moves along the template, the DNA duplex reforms, and the RNA is displaced as a free polynucleotide chain. 

3. The last 14 ribonucleotides in the growing RNA are complexed with the DNA and/or the enzyme at any given moment.