Exam 3

Question 1

2nd Law of Thermodynamics

Answer 1

In a closed system, disorder is favored

Question 2

Thermoregulation

Answer 2

Adjustment of temperature in an organism in relation to its outside envrironment

Question 3

Q10

Answer 3

Factor by which the rate of a reaction increases for every 10-degree rise in the temperature

Question 4

Aerobic scope

Answer 4

The difference between the MMR and BMR

Question 5

Maximal aerobic speed

Answer 5

The top speed during activity metabolic rate that can be achieved before fatigue sets in

Question 6

The blood of a freshwater teleost fish is ______ with respect to ambient conditions

Answer 6

Hyperosmotic

Question 7

In the body, water is found in the largest quantity in the

Answer 7

Intracellular fluid

Question 8

A measure of thermal tolerance. The body temperature where animals can no longer remove themselves from stressful conditions

Answer 8

CTmax

Question 9

Mechanism of heat exchange via contact with a surface

Answer 9

Conduction

Question 10

Animals need energy to

Answer 10

Create and maintain internal organization, maintain ion gradients, pump blood

Question 11

Suppose an animal is oxidizing food according to the following reaction:
C16H32O2 + 23O2 –> 16 CO2 + 6H2O + 10,042 kJ/mol. What is the respiratory quotient?

Answer 11

16/23

Question 12

Which of the following is a factor that exerts a particularly large effect on metabolic rate of an ectotherm?

Answer 12

Environmental temperature

Question 13

Cutaneous water loss is primarily dependent on the permeability of the skin and _____

Answer 13

Difference in vapor pressure inside and outside the body

Question 14

Skin permeability to water loss is primarily determined by ______

Answer 14

Cellular lipids

Question 15

An increase in endurance can be attained via conditioning. A primary mechanism facilitating this increase is

Answer 15

A change in aerobic enzyme production

Question 16

Mechanism of heat exchange associated with movement of the external medium

Answer 16

Convection

Question 17

Mass-specific metabolic rate is expected to be greatest in

Answer 17

Birds

Question 18

If the basal metabolic rate was proportional to the mass of metabolically important organs (e.g. heart) then the scaling exponent would be equal to

Answer 18

1

Question 19

Measurement of a basal metabolic rate depends on all of the following except

Answer 19

During active phase

Question 20

Route of heat exchange unimportant to nocturnal animals

Answer 20

Radiation

Question 21

_____ is the temperature at which performance is maximized

Answer 21

T opt

Question 22

An ionic U/P ratio that is greater than 1 indicates that the urine contains ______ sodium compared to the plasma.

Answer 22

More

Question 23

Mass-specific metabolic rate ____ with increasing body weight

Answer 23

Decreases

Question 24

The energy cost of moving a given distance that is independent of time and speed is called ______

Question 25

The temperature range along a thermal performance curve where conditions have begun to “get worse” is called the ______

Answer 25

Pegus range

Question 26

Increased metabolic rate due to activation of digestive processes is known as _______

Answer 26

Specific dynamic action