PIN and ABCB transport proteins direct the auxin efflux component of polar auxin transport throughout the plant

TLS Online TPP Program

#Id: 7814

#Unit 10. Ecological Principles

Metabolic rate of Ectotherm and endotherm  with respect to variable temp

TLS Online TPP Program

#Id: 7815

#Unit 10. Ecological Principles

Q10 provides that the rate of a reaction increases for every 10-degree rise in the temperature

TLS Online TPP Program

#Id: 7816

#Unit 10. Ecological Principles

Animals use behavior to survive in cold temperatures

Curling up into a ball to reduce the exposed surface area. 

Penguins may huddle together to conserve heat. 

Bears hibernate, spending the winter in a deep sleep.

TLS Online TPP Program

#Id: 7817

#Unit 10. Ecological Principles

Polar bears and seals have multiple layers of fat, plumage, or fur to keep warm.

Arctic birds often have thick layers of feathers.

TLS Online TPP Program

#Id: 7818

#Unit 10. Ecological Principles

In many endotherms, shivering occurs in cold conditions whereby the body undergoes rapid muscle contractions without any locomotion.

When the body temperature falls, brown fat cells increase their metabolic rate, and hence heat production.

TLS Online TPP Program

#Id: 7819

#Unit 10. Ecological Principles

Many organisms minimize heat loss to the environment via countercurrent heat exchange