A rut site has a sequence rich in C and poor in G preceding the actual site(s) of termination. The sequence corresponds to the 3’ end of the RNA.

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#Id: 7139

#Unit 6. System Physiology – Plant

Bioactive brassinosteroid levels are also modulated by a variety of inactivation or catabolic reactions, including epimerization, oxidation, hydroxylation, sulfonation, and conjugation to glucose or lipids.

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#Id: 8067

#Unit 13. Methods in Biology

If an optically active molecule has a positive CD, then its enantiomer will have a negative CD of exactly the same magnitude.

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#Id: 2198

#Unit 10. Ecological Principles

Character                         early stage         late stage 

Root to shoot ratio                    high             low

Number of seed                         many            few

Seed size                                     small            large

Biotic potential                           high             low

Productivity per biomass           high             low

NPP                                              high             low

P/R ratio                                        >1               =1

Nutrient cycling                       open             closed

Importance of detrivores          less              more

Stratification                               No               Yes 

Regeneration ability                 more              less

Resistance ability                        less              more

TLS Online TPP Program

#Id: 8539

#Unit 2. Cellular Organization

The short (∼20 amino acid) C-terminal tails of both α- and β-tubulin that protrude from the microtubule are enriched in glutamic and aspartic acids, the surface of the microtubule possesses a net negative charge.

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#Id: 7996

#Unit 10. Ecological Principles

An organism’s niche includes the range of abiotic and biotic conditions it can tolerate. 

In the case of the cottontail rabbit, its niche includes the ranges of temperature and humidity that it can tolerate, the plants that it eats, and the predatory hawks and coyotes with which it coexists.