Stimulation of the sympathetic cardiac nerves speeds the depolarization in SA node.

TLS Online TPP Program

#Id: 10298

#Unit 4. Cell Communication and Cell Signaling

T-cell education

TLS Online TPP Program

#Id: 6056

#Unit 10. Ecological Principles

Lack of water is the primary factor that determines that an area will be a desert

Hot desert.

Cold desert 

Desert    Location 

Sahara  N. Africa 

Kolahari                      S. Africa 

Coastal Atacama              Peru

Sonoran               North American 

Simpson          Australia 

 

TLS Online TPP Program

#Id: 10462

#Unit 4. Cell Communication and Cell Signaling

MYC gene encodes a basic helix-loop-helix protein

include MAD, MAX, and MNT

TLS Online TPP Program

#Id: 4584

#Unit 6. System Physiology – Plant

The initial observation was that the germination of lettuce seeds is stimulated by red light and inhibited by farred light.

TLS Online TPP Program

#Id: 5736

#Unit 10. Ecological Principles

Proposed attributes of successfully invading species

a. Shedding of natural enemies during colonization 

b. Absence of natural enemies in recipient community 

c. Better competitor than native species 

d. Presence of mutualists in recipient community 

e. High dispersal ability 

f. Association with humans 

g. High reproductive rate (r-selected species) 

h. High growth rate (r-selected species) 

i. Ability to thrive in disturbed areas 

j. Asexual reproduction (plants) 

k. Unique ways of life; occupy vacant niches