Concepts 10.1-10.3 (Physiology)

Question 1

What are ectotherms?

Answer 1

An organism who’s body temperature regulation relies on the external environment

Question 2

What are endotherms?

Answer 2

An organism that internally regulates its body temperature

Question 3

Why does reaction rate increase with temperature?

Answer 3

Kinetic energy

Question 4

What happens after an organism has reached their optimal temperature level?

Answer 4

The reaction rate falls

Question 5

What are heterotherms?

Answer 5

Body temperature fluctuates

Question 6

What are homeotherms?

Answer 6

Body temperature remains stable

Question 7

What is radiation?

Answer 7

Transfer of heat through electromagnetic waves (mostly infrared)

Question 8

What is conduction?

Answer 8

Transfer of heat through a material/object

Question 9

What is convection?

Answer 9

Transfer of heat by movement of fluids (liquids or gases)

Question 10

What is evaporation?

Answer 10

Heat transfer from when liquid changes to gas

Question 11

Would an organism with a high SA:V ratio have low or high thermal conductance?

Answer 11

high (lose heat faster)

Question 12

What is allometry?

Answer 12

The relationship between body mass and physiological or morphometric characteristics

Question 13

What is the metabolic rate scale with body mass rate in most creatures?

Answer 13

0.75

Question 14

What is the difference between basal metabolic rate (BSR) and standard metabolic rate (SMR)

Answer 14

SMR takes into account temperature

Question 15

Does metabolic rate increase with body size?

Answer 15

no. not per gram

Question 16

What best describes how the observed metabolic rates of different animal species change with their body size?

Answer 16

The metabolic rate per gram of tissue decreases with increasing body size.