BIO Exam #3 Questions And 100%
Correct Answers| Update 26
Blood is best classified as connective tissue because ________. - Ans--its
cells are separated from each other by an extracellular matrix
Compared with a smaller cell, a larger cell of the same shape has
________. - Ans--less surface area per unit of volume
Consider the energy budgets for a human, an elephant, a penguin, a
mouse, and a snake. The ________ would have the highest total annual
energy expenditure, and the ________ would have the highest energy
expenditure per unit mass. - Ans--elephant; mouse
Elephants can often be observed using their trunks to spray water over their
bodies, which cools them. What type of heat exchange does this process
promote? - Ans--evaporation
If a person travels to a time zone that was several hours ahead of their own,
they may experience tiredness known as jet lag. Jet lag is due to a
disruption of ________. - Ans--circadian rhythm
In a cool environment, an ectotherm is more likely to survive an extended
period of food deprivation than would an equally sized endotherm because
the ectotherm ________. - Ans--invests little energy in temperature
regulation
In mammals, growth hormone is an endocrine signaling molecule that
stimulates repair and growth of various tissues. Which of the following is
required for a tissue to respond to growth hormone? - Ans--the presence of
a growth hormone receptor
, In which process is the metabolic breakdown of specialized brown fat
deposits in certain animals substantially increased? - Ans--nonshivering
thermogenesis
Some animals have no gills when young, but then develop gills that grow
larger as the animal grows larger. Which of the following statements
provides the best explanation for this increase in gill size? - Ans--Relative to
their volume, the young have more surface area across which they can
transport all the oxygen they need.
The body's automatic tendency to maintain a constant and optimal internal
environment is termed as ________. - Ans--homeostasis
The hypothalamus in the brain releases the hormone corticotropin-
releasing hormone (CRH) that triggers the release of adrenocorticotropic
hormone (ACTH) from the pituitary gland. ACTH travels through the blood
to cause the release of cortisol from the cortex of the adrenal glands. If
cortisol acts with negative feedback on CRH and ACTH, what would you
expect to happen when cortisol is released? - Ans--CRH and ACTH levels
will decrease
The panting responses observed in overheated birds and mammals
dissipate heat loss by what process? - Ans--evaporation
The temperature-regulating center of vertebrate animals is located in the
________. - Ans--hypothalamus
Which of the following is the best interpretation of the model? - Ans--that
warmer arterial blood transfers heat to the cooler venous blood
What tissue lines most exchange surfaces of multicellular animals? - Ans--
epithelial tissue
Which body system assists with coordination of vertebrate body functions
via chemical signals? - Ans--endocrine system
Correct Answers| Update 26
Blood is best classified as connective tissue because ________. - Ans--its
cells are separated from each other by an extracellular matrix
Compared with a smaller cell, a larger cell of the same shape has
________. - Ans--less surface area per unit of volume
Consider the energy budgets for a human, an elephant, a penguin, a
mouse, and a snake. The ________ would have the highest total annual
energy expenditure, and the ________ would have the highest energy
expenditure per unit mass. - Ans--elephant; mouse
Elephants can often be observed using their trunks to spray water over their
bodies, which cools them. What type of heat exchange does this process
promote? - Ans--evaporation
If a person travels to a time zone that was several hours ahead of their own,
they may experience tiredness known as jet lag. Jet lag is due to a
disruption of ________. - Ans--circadian rhythm
In a cool environment, an ectotherm is more likely to survive an extended
period of food deprivation than would an equally sized endotherm because
the ectotherm ________. - Ans--invests little energy in temperature
regulation
In mammals, growth hormone is an endocrine signaling molecule that
stimulates repair and growth of various tissues. Which of the following is
required for a tissue to respond to growth hormone? - Ans--the presence of
a growth hormone receptor
, In which process is the metabolic breakdown of specialized brown fat
deposits in certain animals substantially increased? - Ans--nonshivering
thermogenesis
Some animals have no gills when young, but then develop gills that grow
larger as the animal grows larger. Which of the following statements
provides the best explanation for this increase in gill size? - Ans--Relative to
their volume, the young have more surface area across which they can
transport all the oxygen they need.
The body's automatic tendency to maintain a constant and optimal internal
environment is termed as ________. - Ans--homeostasis
The hypothalamus in the brain releases the hormone corticotropin-
releasing hormone (CRH) that triggers the release of adrenocorticotropic
hormone (ACTH) from the pituitary gland. ACTH travels through the blood
to cause the release of cortisol from the cortex of the adrenal glands. If
cortisol acts with negative feedback on CRH and ACTH, what would you
expect to happen when cortisol is released? - Ans--CRH and ACTH levels
will decrease
The panting responses observed in overheated birds and mammals
dissipate heat loss by what process? - Ans--evaporation
The temperature-regulating center of vertebrate animals is located in the
________. - Ans--hypothalamus
Which of the following is the best interpretation of the model? - Ans--that
warmer arterial blood transfers heat to the cooler venous blood
What tissue lines most exchange surfaces of multicellular animals? - Ans--
epithelial tissue
Which body system assists with coordination of vertebrate body functions
via chemical signals? - Ans--endocrine system
