Metabolism in conformers and regulators - learning outcomes/ questions Flashcards
The ability of an organism to maintain its metabolic rate is affected by what?
The ability of an organism to maintain its metabolic rate is affected by external abiotic factors.
Examples of Abiotic factors
Abiotic factors — temperature, salinity and pH.
Conformers’ internal environment depends upon what?
Conformers’ internal environment is dependent upon external environment.
Conformers use what to maintain optimum metabolic rate.
Conformers use behavioural responses to maintain optimum metabolic rate.
Conformers have low what and a narrow what?
Conformers have low metabolic costs and a narrow range of ecological niches.
Behavioural responses by conformers allow them to what?
Behavioural responses by conformers allow them to tolerate variation in their external environment to maintain optimum metabolic rate.
Regulators maintain their internal environment regardless of what?
Regulators maintain their internal environment regardless of external environment.
Regulators use what to control their internal environment?
Regulators use metabolism to control their internal environment.
Regulators use metabolism to control their internal environment. What does this increase?
increases the range of possible ecological niches.
This regulation requires what to achieve what?
This regulation requires energy to achieve homeostasis.
This regulation requires energy to achieve homeostasis. What does this increase?
This increases their metabolic costs.
The hypothalamus is the what?
The hypothalamus is the temperature monitoring centre.
Informations is communicated how and what does it bring about?
information is communicated by electrical impulses through nerves to the effectors, which bring about corrective responses to return temperature to normal.
How does sweating respond to an increase in body temperature?
Sweating — body heat used to evaporate water in the sweat, cooling the skin.
How does vasodilation respond to an increase in body temperature?
Vasodilation — increased blood flow to the skin increases heat loss.
How does a decrease in metabolic rate respond to an increase in body temperature?
Decreased metabolic rate — less heat produced.
How does shivering respond to a decrease in body temperature?
Shivering — muscle contraction generates heat.
How does Vasoconstriction respond to a decrease in body temperature?
Vasoconstriction — decreased blood flow to skin decreases heat loss.
How does Hair erector muscles respond to a decrease in body temperature?
Hair erector muscles contract — traps layer of insulating air.
How does an increase in metabolic rate respond to a decrease in body temperature?
Increased metabolic rate — more heat produced.
What is the importance of thermoregulation?
for optimal enzyme activity and high diffusion rates to maintain metabolism.
