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: 7066

#Unit 3. Fundamental Processes

Multiple tRNAs representing the same amino acid are called isoaccepting tRNAs; because they are all recognized by the same synthetase, they are also described as its cognate tRNAs.

TLS Online TPP Program

#Id: 7067

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7068

#Unit 3. Fundamental Processes

Class I enzymes attach the amino acid to the 2’-OH of the tRNA and are generally monomeric. Class II enzymes attach the amino acid to the 3’-OH of the tRNA and are typically dimeric or tetrameric.The amino acids for which the Class I synthetases are specific tend to be larger and more hydrophobic than those for Class II synthetases.

TLS Online TPP Program

#Id: 7069

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7070

#Unit 3. Fundamental Processes

TLS Online TPP Program

#Id: 7071

#Unit 3. Fundamental Processes