The pertussis toxin, produced by Bordetella pertussis Catalyze a covalent modification of the Gαi protein preventing GDP-GTP exchange.

TLS Online TPP Program

#Id: 7836

#XL - T Zoology

A carbon atom with four different substituents is said to be asymmetric, and asymmetric carbons are called chiral centers

Chiral carbon most distant from the carbonyl carbon has the same configuration as the chiral carbon in D-glyceraldehyde.

TLS Online TPP Program

#Id: 7835

#XL - T Zoology

Aldoses with at least three carbons and ketoses with at least four carbons contain chiral centers

TLS Online TPP Program

#Id: 7995

#XL - T Zoology

The habitat of an organism is the place, or physical setting, in which it lives.

TLS Online TPP Program

#Id: 7996

#XL - T Zoology

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.

TLS Online TPP Program

#Id: 7997

#XL - T Zoology

TLS Online TPP Program

#Id: 7998

#XL - T Zoology

The fundamental niche of a species is the range of abiotic conditions under which species can persist. 

This includes the range of temperature, humidity, and salinity conditions that allow a population to survive, grow, and reproduce.