metabolism in conformers and regulators 2.4

Question 1

abiotic factors

Answer 1

temperature
salinity
PH

Question 2

what is salinity

Answer 2

salt concentration

Question 3

internal environment depends on its external environment

Answer 3

conformers

Question 4

narrow range of ecological niches and low metabolic costs

Answer 4

conformers

Question 5

conformers behavioural responses

Answer 5

bask in the sun to heat up
burrow to cool down

Question 6

maintain constant internal environment conditions despite changes to their external environment

Answer 6

regulator

Question 7

how do regulators maintain their internal environment

Answer 7

metabolism

Question 8

high metabolic costs, large range of ecological niches

Answer 8

regulators

Question 9

what is thermoregulation

Answer 9

control of body temperature

Question 10

body temperature varies with the temperature of the external environment

Answer 10

thermoconformers

Question 11

maintain a cnstant body temperature no matter the temperature of the external environment

Answer 11

thermoregulators

Question 12

the maintenance of the bodys internal environment with tolerable limits regardless of changes in the external environment

Answer 12

physiological homeostasis

Question 13

physiological homeostasis

Answer 13

the maintenance of the bodys internal environment within tolerable limits regardless of changes in the external environment

Question 14

process of negative feedback

Answer 14

change in norm
change detected by receptors
message sent to efectrors bring corrective response
conditions back to norm

Question 15

negative feedback defintion

Answer 15

and change away from the optimum is detected by receptors that switch on a corrective mechanisms to restore the conditions back to normal
corrective mechanisms is then switched off

Question 16

unable to regulate body temperature

Answer 16

ectotherms

Question 17

able to maintain body temperature

Answer 17

endotherms

Question 18

bodys temperature monitoring centre

Answer 18

hypothalamus

Question 19

central thermoreceptors

Answer 19

detects change in temperature of the blood, and bodys core

Question 20

skin thermoreceptors

Answer 20

conveys information about the surface temperature of the body

Question 21

how does the body deal with overheating

Answer 21

vasodilation
hair erector muscles contract
sweating

Question 22

how does the body deal with overcooling

Answer 22

vasodilation
hair erector muscles contract
decrease in sweating

Question 23

what is vasodilation

Answer 23

arterioles supplying the skin become dilated so a larger volume of blood flows through, heat is lost by radiating through skin

Question 24

why do the hair erector muscles contract

Answer 24

to trap a layer of air on the surface of the skin to act as insulation

Question 25

how does sweating cool the body

Answer 25

the energy from heat is used to change the sweat into water vapour by evaporation

Question 26

how is information communicated from nerves to effectors

Answer 26

electrical impulses

Question 27

why is thermo regulation needed

Answer 27

for optimal enzyme activity and high diffusion rates