Thermal relations

Question 1

What do enzymes have regarding temperature?

Answer 1

Temperature optima

Question 2

How do reactions change with a 10°C decrease?

Answer 2

Decrease by ~2x

Question 3

poikilothermic:

Answer 3

variable body temperature

Question 4

What do all objects warmer than absolute zero emit?

Answer 4

Electromagnetic waves

Question 5

What alters radiative exchange?

Answer 5

Physical and behavioral adaptations

Question 6

How do plants lose heat?

Answer 6

Transpiration

Question 7

What is the cooling effect of evaporation?

Answer 7

~10°C

Question 8

Why is evaporative cooling important?

Answer 8

Prevents enzyme denaturation

Question 9

What are the five adaptations for thermoregulation?

Answer 9

Insulation
Circulatory adaptations
Evaporative cooling
Behavioral responses
Adjusting metabolic heat production

Question 10

How do organisms control body temperature besides physiology?

Answer 10

Behavioral responses

Question 11

How do some terrestrial invertebrates regulate heat?

Answer 11

Adjust body posture for solar absorption

Question 12

How do honeybees stay warm in cold weather?

Answer 12

Huddle together