Melanin protects against the harmful effects of sunlight, and people with red hair are usually fair skinned and particularly susceptible to skin cancer.

TLS Online TPP Program

#Id: 8705

#Unit 1. Molecules and their Interaction Relevant to Biology

The cytosolic isozyme has two distinct functions. It catalyzes the conversion of citrate to isocitrate, providing the substrate for a cytosolic isocitrate dehydrogenase that generates NADPH as reducing power for fatty acid synthesis and other anabolic processes in the cytosol. It also has a role in cellular iron homeostasis.

TLS Online TPP Program

#Id: 5266

#Unit 7. System Physiology – Animal

Phase 4 (resting membrane potential) averages about −90 millivolts.

TLS Online TPP Program

#Id: 8996

#Unit 6. System Physiology – Plant

Regeneration of the CO2 acceptor ribulose 1,5-bisphosphate. 

The cycle is completed by regeneration of ribulose 1,5-bisphosphate through a series of ten enzyme-catalyzed reactions, one requiring ATP.

TLS Online TPP Program

#Id: 425

#Unit 2. Cellular Organization

This 30-nm fiber is further folded, results in 1000-fold compaction in euchromatin in interphase chromatin and in mitotic chromosomes to achieve an overall 10,000- fold compaction in euchromatin.

TLS Online TPP Program

#Id: 7034

#Unit 11. Evolution and Behavior