4/8/24 - Lecture 5: Adaptations to Stress

Question 1

Adaptation

Answer 1

Evolutionary change in genotype that increases performance

Question 2

Acclimation

Answer 2

Change in phenotype within an individual’s lifetime that increases performance

Question 3

Q10

Answer 3

The multiplicative factor by which a reaction rate increases for each increase of 10°C

Question 4

Ectotherms

Answer 4

Body temperature primarily determined by external conditions

Question 5

Endotherms

Answer 5

Body temperature primarily determined by internal, metabolic energy

Question 6

What area of mammals’ brains regulates temperature?

Answer 6

The hypothalamus, which uses negative feedback to regulate temperature

Question 7

How do ECTOTHERMS regulate temperature?

Answer 7

By using morphological and behavioral mechanisms

Question 8

How do ENDOTHERMS deal with cold?

Answer 8

By using morphological, physiological, and behavioral mechanisms

Question 9

Countercurrent heat exchange

Answer 9

When heat is exchanged between blood vessels carrying blood in opposite directions. Blood flowing into muscles is warmed by blood flowing out, allowing animals to conserve heat

Question 10

How do plants regulate temperature?

Answer 10

Through morphology and behavior

Question 11

C4 plants

Answer 11

Spatial separation of photosynthesis and CO2 capture

Question 12

CAM plants

Answer 12

Temporal separation of photosynthesis and CO2 capture

Question 13

What factors influence probability of being eaten?

Answer 13

The probabilities of detection, being caught, and being eaten