Question 1

Which of the following are mismatched?
A) psychrophile: salt-loving microbe
B) thermophile: heat-loving microbe
C) poikilotherm: ectotherm
D) homeotherm: endotherm
E) None of the choices are correct.

Accepted Answer

Psychrophiles are microbes that thrive in cold temperatures and do not typically tolerate high salt concentrations. Salt-loving microbes are known as halophiles.

Question 2

The body temperature of ____________ varies directly with the environment.
A) homeotherms
B) poikilotherms
C) psychrotherms
D) envirotherms
E) microtherms

Accepted Answer

Poikilotherms are organisms whose body temperature fluctuates with changes in the environment. Homeotherms, on the other hand, maintain a relatively constant internal body temperature regardless of environmental changes. Psychrotherms, envirotherms, and microtherms are not commonly used terms in biology and do not accurately describe the relationship between an organism's body temperature and its environment.

Question 3

When an organism becomes acclimated to a new environmental situation; it will generally involve
A) physiological changes.
B) genetic changes.
C) sociological changes.
D) both physiological changes and genetic changes.
E) both genetic changes and sociological changes.

Accepted Answer

Acclimation involves physiological changes that allow an organism to adjust to new environmental conditions, rather than genetic or sociological changes.

Question 4

It is a very hot day,and you jump into a lake to cool off.What is the method of heat exchange?
A) conduction
B) radiation
C) evaporation
D) convection
E) None of the choices are correct.

Accepted Answer

The answer of It is a very hot day,and you...

Question 5

Mammalian and avian aquatic endotherms use all of the following mechanisms to thermoregulate except:
A) fat
B) internal respiratory systems
C) fur or feathers
D) concurrent heat exchange
E) countercurrent heat exchange

Accepted Answer

The answer of Mammalian and avian aquatic endotherms use all...

Question 6

Which of the following survival mechanisms is/are best suited for intense heat and drought?
A) hibernation
B) torpor
C) estivation
D) both hibernation and torpor
E) both torpor and estivation

Accepted Answer

Estivation is a survival mechanism that involves a prolonged period of dormancy during hot and/or dry conditions. This allows an animal to conserve water and energy until more favorable conditions return. Hibernation and torpor are more commonly associated with surviving in cold temperatures, as they involve a decrease in metabolic rate and body temperature to conserve energy.

Question 7

Dolphins use __________________ to conserve body heat.
A) concurrent heat exchange
B) countercurrent heat exchange
C) thoracic muscles
D) diet
E) All of the choices are correct.

Accepted Answer

Dolphins use countercurrent heat exchange to conserve body heat. This means that the warm blood flowing from the body's core is cooled down by the cooler blood flowing in the opposite direction in the surrounding veins. This allows the dolphins to keep their body temperature consistent, even in cold water. None of the other options listed relate to heat conservation in dolphins.

Question 8

How are the studies performed on rainbow trout (Oncorhynchus mykiss)and the moss Pleurozium schreberi and the desert shrub Atriplex lentiformis similar?
A) Both studies examine the effects of microclimates.
B) Both studies support the concept that species operate within a narrow optimum temperature range.
C) Both studies are coupled to enzymatic activity.
D) Both studies examine the effects of microclimates and studies support the concept that species operate within a narrow optimum temperature range.
E) Both studies support the concept that species operate within a narrow optimum temperature range and are coupled to enzymatic activity.

Accepted Answer

Both studies on rainbow trout and the plants Pleurozium schreberi and Atriplex lentiformis likely explore how these organisms function within their specific environmental conditions, focusing on the concept that each species thrives within a narrow optimum temperature range. This concept is often linked to enzymatic activity, as enzymes, which drive metabolic processes, have optimal temperature ranges in which they function most efficiently. This connection suggests that the studies would examine both the temperature range and the associated biochemical processes to understand the organisms' adaptations to their environments.

Question 9

Most insects use external sources of heat to achieve their operative temperature range.Heinrich's research on the sphinx moth (Manduca sexta)indicates that some insects can thermoregulate by using their flight muscles and
A) using their blood as a coolant.
B) decreasing their metabolic rate.
C) possessing an internal respiratory system.
D) using a countercurrent heat exchange mechanism.
E) using a concurrent heat exchange mechanism.

Accepted Answer

The answer of Most insects use external sources of heat...

Question 10

In general,reptiles are considered to be a/an?
A) poikilotherm
B) homeotherm
C) endotherm
D) heterotherm
E) two of the choices are correct

Accepted Answer

Reptiles are poikilothermic or ectothermic animals, which means they regulate their body temperature through external sources like basking in the sun or seeking shade. They do not have the ability to regulate their body temperature internally like homeothermic (B) and endothermic (C) animals. Heterothermy (D) refers to animals that can switch between regulating their own body temperature and relying on external sources.

Question 11

All of the following are components that influence a microclimate except:
A) burrows.
B) vegetation.
C) ground color.
D) topography.
E) None of the choices are correct.

Accepted Answer

All four options are correct components that influence a microclimate. Therefore, none of the choices are correct for this question.

Question 12

Bluefin tuna and mackerel sharks are considered to be endothermic fish because their
A) lateral swim muscles heat cool venous blood, thereby elevating their body temperature above the surrounding water temperature.
B) abdominal swim muscles heat cool venous blood, thereby matching their body temperature to the surrounding water temperature.
C) lateral swim muscles cool warm arterial blood, thereby elevating their body temperature above the surrounding water temperature.
D) lateral swim muscles heat cool arterial blood, thereby elevating their body temperature above the surrounding water temperature.
E) lateral swim muscles heat cool arterial blood, thereby matching their body temperature to the surrounding water temperature.

Accepted Answer

Bluefin tuna and mackerel sharks use their lateral swim muscles to heat (by contracting the muscles) or cool (by relaxing the muscles) the arterial blood flowing to their metabolic organs, such as their brain and muscles. This enables them to maintain a higher body temperature than the surrounding water, making them endothermic fish.

Question 13

It's a hot summer day,and you begin to sweat.What is the method of heat exchange?
A) conduction
B) convection
C) evaporation
D) radiation
E) None of the choices are correct.

Accepted Answer

Sweating is the process of evaporation, where sweat from the body turns into vapor and takes heat away from the body, cooling it down.

Question 14

Getting up from your chair you realize that it is warm.What is the method of heat exchange?
A) conduction
B) convection
C) evaporation
D) radiation
E) None of the choices are correct.

Accepted Answer

The warmth you feel in your chair is due to conduction, which is the transfer of heat through direct contact. As you were sitting in the chair, your body heat transferred to the chair through the contact between you and the chair.

Question 15

Metabolic heat (H_m)is the heat A) energy intake an organism must have for movement. B) released during cellular respiration. C) energy needed in order to undergo cellular respiration. D) energy loss due to evaporation. E) None of the choices are correct.

Accepted Answer

Metabolic heat is the heat released during cellular respiration, which is the process by which organisms convert glucose and oxygen into energy (ATP) and carbon dioxide. This process generates heat as a byproduct, which is important in regulating an organism's body temperature. Therefore, option B is the correct answer.

Question 16

According to Kidron,Barzilay,and Sachs' research on the dune slopes of the Negev Desert,moss would most likely be found on _________ facing slopes due to _________.
A) south; decreased evaporation rates
B) south; increased evaporation rates
C) north; increased evaporation rates
D) north; decreased evaporation rates
E) Moss does not grow in the Negev Desert.

Accepted Answer

Moss would most likely be found on north-facing slopes due to decreased evaporation rates. This is because north-facing slopes receive less direct sunlight and therefore evaporate less moisture, creating a more favorable environment for moss growth.

Question 17

Torpor and hibernation share all of the following except:
A) duration.
B) decreased body temperature.
C) decreased metabolic rate.
D) decreased energy demand.
E) None of the choices are correct.

Accepted Answer

Torpor and hibernation differ in the duration of time spent in the state. Torpor is a short-term decrease in metabolic rate and body temperature, typically lasting only a few hours, while hibernation is a long-term state of reduced metabolic activity lasting weeks or months. Both states involve decreased body temperature, metabolic rate, and energy demand.

Question 18

Research indicates that the broad tailed hummingbird will enter into torpor
A) if a minimum surrounding air temperature is met.
B) during a summer drought.
C) if their body fat drops below 15%.
D) if darkness exceeds daylight hours.
E) if insufficient nectar is obtained.

Accepted Answer

The answer of Research indicates that the broad tailed hummingbird...

Question 19

The arctic and alpine cushion plants and the Camnula grasshopper both use __________________ to aid in thermoregulation.
A) countercurrent heat exchange mechanisms
B) endothermic methods
C) increased water retention
D) torpor
E) dark pigmentation

Accepted Answer

The answer of The arctic and alpine cushion plants and...

Question 20

Desert plants can prevent overheating by utilizing all of the following temperature regulating methods except:
A) paraheliotropism.
B) decreasing rates of radiative heating.
C) decreasing conductive heating.
D) increasing evaporative cooling.
E) increasing convective cooling.

Accepted Answer

The answer of Desert plants can prevent overheating by utilizing...

Quiz 5: Temperature Relations

Which of the following are mismatched?

The body temperature of ____________ varies directly with the environment.

When an organism becomes acclimated to a new environmental situation; it will generally involve

It is a very hot day,and you jump into a lake to cool off.What is the method of heat exchange?

Mammalian and avian aquatic endotherms use all of the following mechanisms to thermoregulate except:

Which of the following survival mechanisms is/are best suited for intense heat and drought?

Dolphins use __________________ to conserve body heat.

How are the studies performed on rainbow trout (Oncorhynchus mykiss) and the moss Pleurozium schreberi and the desert shrub Atriplex lentiformis similar?

Most insects use external sources of heat to achieve their operative temperature range.Heinrich's research on the sphinx moth (Manduca sexta) indicates that some insects can thermoregulate by using their flight muscles and

In general,reptiles are considered to be a/an?

All of the following are components that influence a microclimate except:

Bluefin tuna and mackerel sharks are considered to be endothermic fish because their

It's a hot summer day,and you begin to sweat.What is the method of heat exchange?

Getting up from your chair you realize that it is warm.What is the method of heat exchange?

Metabolic heat (H_m) is the heat

According to Kidron,Barzilay,and Sachs' research on the dune slopes of the Negev Desert,moss would most likely be found on _ facing slopes due to _.

Torpor and hibernation share all of the following except:

Research indicates that the broad tailed hummingbird will enter into torpor

The arctic and alpine cushion plants and the Camnula grasshopper both use __________________ to aid in thermoregulation.

Desert plants can prevent overheating by utilizing all of the following temperature regulating methods except: