Metabolism In Conformers And Regulators Flashcards
Abiotic factors
Temperature, salinity and pH
What do behavioural responses allow comformers
Allow them to tolerate variation in their external environment to maintain optimum metabolic rate
What metabolic cost do conformers have?
Low metabolic costs and a narrow range of ecological niches
Regulators use metabolism to control….
Their internal environment, which increases the range of possible ecological niches
Regulation requires what
Energy to achieve homeostasis, which increases metabolic costs
What is the hypothalamus
The hypothalamus is the temperature monitoring centre
What is information communicated by
By electrical impulses through nerves to the effectors, which bring about corrective responses to return temperature to normal
Sweating
Body heat used to evaporate water in the sweat, cooling the skin
Vasodilation
Increased blood flow to the skin increases heat loss
Decreased metabolic rate
Less heat produced
Shivering
Muscle contraction generates heat
Vasoconstriction
Decreased blood flow to skin decreases heat loss
Hair erector muscles contract
Traps layer of insulating air
Increased metabolic rate
More heat produced
Importance of thermoregulation
For optimal enzyme activity and high diffusion rates to maintain metabolism
