Bio 152 Exam 3 UPDATED ACTUAL Exam
Questions and CORRECT Answers
In small organisms ____ is delivered to tissues through ______, but larger organisms with a
lower surface to volume ratios have to have a system to get oxygen into the body called a ______
system and then a system to distribute that oxygen around the body called a _______. -
CORRECT ANSWER - oxygen, diffusion, respiratory, circulatory
Whether from the environment into a cell or from the alveoli of lungs into blood, gas diffusion
goes from areas of _____ concentration to areas of _____ concentration. - CORRECT
ANSWER - high, low
The respiratory system - CORRECT ANSWER - provides body tissues with oxygen
Match the organism to the respiratory system
mammals
fish
insects - CORRECT ANSWER - mammals → pulmonary ventilation followed by
diffusion to blood
fish → diffusion across gills directly into blood
insects → tracheal system direct delivery to cells
Why are open circulatory systems advantageous to some animals? - CORRECT
ANSWER - They use less metabolic energy
Blood flow that is directed through the lungs and back the heart is called - CORRECT
ANSWER - pulmonary circulation
fish circulation
reptile circulation
, mammal circulation - CORRECT ANSWER - one direction
mixing of deoxy and oxy blood in middle
separation of deoxy and oxy blood
Circulatory systems have the primary benefit of overcoming the shortcomings of - CORRECT
ANSWER - the slow rate at which diffusion occurs across cells
Which of the following are true statements with regard to circulatory systems. There isn't a
phylogeny in the chapter, but you can figure these out. - CORRECT ANSWER - 1. the
heart is an ancestral trait for mammals
2. The four chambered heart prevents mixing of oxygenated and de-oxygenated blood, whereas
the three chambered heart allows for some mixing.
What happens to enzymes when the temperature goes up 10 degrees Celsius (generally) -
CORRECT ANSWER - their reaction rate doubles
Humans can lose, but cannot gain, heat through - CORRECT ANSWER - evaporation
African elephants use their ears to dissipate body heat. To aid in this process they flap their ears,
and stand in the shade. Which of the following is true about this behavior? - CORRECT
ANSWER - 1. the elephants will dilate the blood vessels leading to and in the ears so that
more blood will flow through them so as to increase heat loss to the environment.
2. The elephants lose heat from their ears to the environment through convection (when flapping)
and radiation
(goose diagram) The thin horizontal arrows in the figure below show that - CORRECT
ANSWER - the warmer arterial blood transfers heat to the cooler venous blood, so body
heat is not lost through the feet
When the temperature of the outside air exceeds their internal body temperature, jackrabbits
living in hot, arid lands will. Think about how energy transfer works before answering. -
Questions and CORRECT Answers
In small organisms ____ is delivered to tissues through ______, but larger organisms with a
lower surface to volume ratios have to have a system to get oxygen into the body called a ______
system and then a system to distribute that oxygen around the body called a _______. -
CORRECT ANSWER - oxygen, diffusion, respiratory, circulatory
Whether from the environment into a cell or from the alveoli of lungs into blood, gas diffusion
goes from areas of _____ concentration to areas of _____ concentration. - CORRECT
ANSWER - high, low
The respiratory system - CORRECT ANSWER - provides body tissues with oxygen
Match the organism to the respiratory system
mammals
fish
insects - CORRECT ANSWER - mammals → pulmonary ventilation followed by
diffusion to blood
fish → diffusion across gills directly into blood
insects → tracheal system direct delivery to cells
Why are open circulatory systems advantageous to some animals? - CORRECT
ANSWER - They use less metabolic energy
Blood flow that is directed through the lungs and back the heart is called - CORRECT
ANSWER - pulmonary circulation
fish circulation
reptile circulation
, mammal circulation - CORRECT ANSWER - one direction
mixing of deoxy and oxy blood in middle
separation of deoxy and oxy blood
Circulatory systems have the primary benefit of overcoming the shortcomings of - CORRECT
ANSWER - the slow rate at which diffusion occurs across cells
Which of the following are true statements with regard to circulatory systems. There isn't a
phylogeny in the chapter, but you can figure these out. - CORRECT ANSWER - 1. the
heart is an ancestral trait for mammals
2. The four chambered heart prevents mixing of oxygenated and de-oxygenated blood, whereas
the three chambered heart allows for some mixing.
What happens to enzymes when the temperature goes up 10 degrees Celsius (generally) -
CORRECT ANSWER - their reaction rate doubles
Humans can lose, but cannot gain, heat through - CORRECT ANSWER - evaporation
African elephants use their ears to dissipate body heat. To aid in this process they flap their ears,
and stand in the shade. Which of the following is true about this behavior? - CORRECT
ANSWER - 1. the elephants will dilate the blood vessels leading to and in the ears so that
more blood will flow through them so as to increase heat loss to the environment.
2. The elephants lose heat from their ears to the environment through convection (when flapping)
and radiation
(goose diagram) The thin horizontal arrows in the figure below show that - CORRECT
ANSWER - the warmer arterial blood transfers heat to the cooler venous blood, so body
heat is not lost through the feet
When the temperature of the outside air exceeds their internal body temperature, jackrabbits
living in hot, arid lands will. Think about how energy transfer works before answering. -
