Darkfield microscopy is used for very thin spirochetes, such as Treponema pallidum, the causative agent of syphilis.

TLS Online TPP Program

#Id: 5084

#Unit 6. System Physiology – Plant

The effect of red light is reversed by a treatment with far-red light, indicative of phytochrome.

TLS Online TPP Program

#Id: 908

#Unit 13. Methods in Biology

Tritiated (3H) Thymidine uptake used to assess Cell Division based on radioactivity measurement by scintillation counting. 

TLS Online TPP Program

#Id: 3514

#Unit 2. Cellular Organization

Overlapping gene are the same sequence of DNA encodes two nonhomologous proteins because it uses more than one reading frame.

TLS Online TPP Program

#Id: 610

#Unit 2. Cellular Organization

Trp operon is negatively regulated by two ways

1. Repression

2. Attenuation

Why is this extra control of two layers on trp operon needed? 

TLS Online TPP Program

#Id: 9029

#Unit 6. System Physiology – Plant

Under ‘‘light conditions,’’ reduced thioredoxin cleaves the disulfide bonds of CP12 and phosphoribulokinase. 

The reduction of phosphoribulokinase and CP12 separates the

components of the ternary complex releasing the active phosphoribulokinase and the active A4B4-glyceraldehyde 3-phosphate dehydrogenase.