REINDEER
REVIEW
WINTER STRATEGIES
HIBERNATION
ASK ME ANYTHING....
100
What kind of thermoregulating mechanism do reindeer use?
What is regional heterothermy.
100
Endotherms that thermoregulate are called:
What is homeotherms.
100
This is the principal determinant for mammals to have the ability to thermoregulate.
What is body size.
100
Name 2 species mentioned in the lecture known for their hibernation strategies.
What are the artic ground squirrels and the alpine marmot.
100
What is the most adapted of all inland mammals for cold exposure?
What are reindeer!
200
What do reindeers possess that provides substantial insulation?
What is pelage.
200
These adaptions allow membrane fluidity to remain constant in a species because of the evolution of different membrane compositions.
What is homeoviscous adapations.
200
Single greatest behavioral option to large-bodies species.
What is migration.
200
What is the body size that majority of hibernators are?
What is 5 kg or less.
200
What specific type of precipitation will lead to reindeers not reaching food plants, thus leading to hunger and starvation?
What are changes in snow.
300
What kind of relationship is there between metabolic rate and air temperature in newborn reindeer?
What is a homeothermic relationship.
300
The range of temperatures at which resting metabolic rate is constant and independent of ambient temperature.
What is the TNZ. (thermoneutral zone)
300
Main reason of mice being warm.
What is a behavioral option due to mother being present and being warmed by her/ warm environment.
300
Fattening is triggered by
What is cues. (photoperiodic and endogenously via biological clock)
300
What does THPs stand for? Which organism are these usually found in?
What is thermal hysteresis proteins.
400
Why are lichens far from being complete in nutritional value?
What is lichens are LOW in protein and LOW in minerals such Na+.
400
These were evolved to adapt to different temperatures allowing animals to live at different temperatures.
What is protein homologs.
400
Possible reason of why large species have not evolved hibernation.
What is energy savings afforded by hibernation decline with body size.
400
Why do adults and subadults of alpine marmots undergo synchronized arousals? (social hibernation)
What is to lower overall energy cost and juveniles lag behind to allow adults to warm them first.
400
What is the mitochondrial protein that occurs exclusively in brown fat?
What is UCP1 (Uncoupling Protein)
500
What are two main structural ways in which brown fat differs from white fat?
What is 1. brown fat is richer in mitochondria. 2 Intracellular fat deposits are multilocular.
500
Uncoordinated coordination of this type of muscle is a response to nervous stimulation.
What is skeletal muscle.
500
Natural selection has not favored large-bodies species. What type of trend does this relationship indicate? (positive/negative allometric or inverse?)
What is an allometric trend.
500
Two major types of PUFAs
What is omega-3 and omega-6
500
Who is the best Biology professor?
Who is Professor King.
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