BIO182 EXAM 3- ANGILETTA, ASU BIO182 EXAM 3, ASU BIO 182
EXAM 3, BIO 182 EXAM 3 STUDY GUIDE ALL VERSIONS EXAM
QUESTIONS WITH CORRECT VERIFIED ANSWERS ALEADY
GRADED A
What does it mean when resources are described as patchy? - correct
answer✔✔They are limited
What is the engineering concept used to explain how organisms should
forage? - correct answer✔✔Optimization model is benefit - cost
Examples of resources - correct answer✔✔Food, water, mates, shelter,
oxygen, CO2, nutrients, heat
T or F: An organism should spend more time feeding in a patch when the
average distance between patches is smaller - correct answer✔✔False
T or F: An organism spends more time in a patch when resources are
patchy. - correct answer✔✔True
In the Charnov and Kerbs experiment, (bird had to peck through sheets of
wood) did the bids spend more time in the "bad" patches? - correct
answer✔✔YES
Optimal strategy maximizes the ____ benefit - correct answer✔✔Net
Net benefit = ? - correct answer✔✔Benefit - Cost
Natural selection favors what type of strategy? - correct answer✔✔It favors
the strategy that yields the greatest net benefit by selecting the best
phenotype per generation
What are two assumptions you can make if an organism maximizes its rate
of energy gain (energy over time)? - correct answer✔✔1: Feeding depletes
food in a patch (the rate of energy gain decreases as resources become
scarce)
,2: Traveling between patches is costly (Traveling between patches takes
time, so animals should decide carefully when giving up and moving to a
new patch; Cost for searching for a new patch- you're not gaining energy
(eating) so it's a missed opportunity)
If the density of the LEAST profitable prey INCREASES, while the density
of the MOST profitable prey remains the SAME, an animal should... -
correct answer✔✔Not change its strategy; keep eating the most profitable
prey
In certain environments, bluegill sunfish switch from eating only large prey
to eating both small and large prey. Under which condition would it be
optimal for a fish to eat both sizes of prey? - correct answer✔✔When the
patch contains many small and a few big prey
How should a bluegill select its prey if a patch contains many big and few
small prey? - correct answer✔✔Eat the big prey
How should a bluegill select its prey if a patch contains many big and many
small prey? - correct answer✔✔Eat the big prey
What does the optimal strategy maximize? - correct answer✔✔Energy
intake over time
What does profitability equal? - correct answer✔✔Energy/Handling Time
T or F: High percentages of squirrels ate the bigger cookies out in the open
rather than carrying it to safety - correct answer✔✔The bigger the cookie,
the squirrel can use for cover whereas the squirrel can eat the smaller
cookies in the open since it can eat it right away and run to safety
Squirrels are more likely to eat a cookie in the open if they are farther from
cover. This finding suggest that... - correct answer✔✔Energetic costs
sometimes outweigh predation risks
T or F. The best strategy to maximize energy intake over time is
represented by finding a tangent line with the smallest slope found from the
, average travel time. - correct answer✔✔False. It would be a tangent line,
but not with the smallest slope because if the slope is too small, then the
animal would be spending too short of a time at the patch and would not
gain as much energy.
Do plants forage adaptively? If so, how? - correct answer✔✔Yes; they use
their roots and also may alter leaf growth depending on their sunlight needs
Which factors determine prey choice? - correct answer✔✔Energy content,
encounter rate, handling rate, search cost
How do organisms use energy (6 processes)? - correct
answer✔✔Locomotion, body temperature, nerve impulses, growth, storage,
reproduction
Define a calorie. - correct answer✔✔1 calorie is equal to the amount of
energy it takes to increase 1g of water by 1 degree Celsius
Describe direct calorimetry - correct answer✔✔Measuring heat produced
by putting a food object in a chamber and essentially blowing it up and then
measuring the change in temperature of the surrounding water of the
chamber
Describe indirect calorimetry - correct answer✔✔Measuring amount of heat
generated by determining the consumption of O2 and eliminated CO2
T or F. The "Red Deer" example in lecture gave an example of why animals
should not wait until an older age to reproduce because reproducing early
increases longevity. - correct answer✔✔False. It gave an example of how
reproduction is costly. The mothers that were nursing had increasing
probability of death because it causes them to be vulnerable to
predators/takes a lot of energy to nurse/missed opportunities to
thermoregulate or feed themselves, while the mother than weren't nursing
were able to live longer but eventually started to die off because they
weren't producing offspring
Which is not a reason why reproduction is costly?
A. Energy to make gametes
EXAM 3, BIO 182 EXAM 3 STUDY GUIDE ALL VERSIONS EXAM
QUESTIONS WITH CORRECT VERIFIED ANSWERS ALEADY
GRADED A
What does it mean when resources are described as patchy? - correct
answer✔✔They are limited
What is the engineering concept used to explain how organisms should
forage? - correct answer✔✔Optimization model is benefit - cost
Examples of resources - correct answer✔✔Food, water, mates, shelter,
oxygen, CO2, nutrients, heat
T or F: An organism should spend more time feeding in a patch when the
average distance between patches is smaller - correct answer✔✔False
T or F: An organism spends more time in a patch when resources are
patchy. - correct answer✔✔True
In the Charnov and Kerbs experiment, (bird had to peck through sheets of
wood) did the bids spend more time in the "bad" patches? - correct
answer✔✔YES
Optimal strategy maximizes the ____ benefit - correct answer✔✔Net
Net benefit = ? - correct answer✔✔Benefit - Cost
Natural selection favors what type of strategy? - correct answer✔✔It favors
the strategy that yields the greatest net benefit by selecting the best
phenotype per generation
What are two assumptions you can make if an organism maximizes its rate
of energy gain (energy over time)? - correct answer✔✔1: Feeding depletes
food in a patch (the rate of energy gain decreases as resources become
scarce)
,2: Traveling between patches is costly (Traveling between patches takes
time, so animals should decide carefully when giving up and moving to a
new patch; Cost for searching for a new patch- you're not gaining energy
(eating) so it's a missed opportunity)
If the density of the LEAST profitable prey INCREASES, while the density
of the MOST profitable prey remains the SAME, an animal should... -
correct answer✔✔Not change its strategy; keep eating the most profitable
prey
In certain environments, bluegill sunfish switch from eating only large prey
to eating both small and large prey. Under which condition would it be
optimal for a fish to eat both sizes of prey? - correct answer✔✔When the
patch contains many small and a few big prey
How should a bluegill select its prey if a patch contains many big and few
small prey? - correct answer✔✔Eat the big prey
How should a bluegill select its prey if a patch contains many big and many
small prey? - correct answer✔✔Eat the big prey
What does the optimal strategy maximize? - correct answer✔✔Energy
intake over time
What does profitability equal? - correct answer✔✔Energy/Handling Time
T or F: High percentages of squirrels ate the bigger cookies out in the open
rather than carrying it to safety - correct answer✔✔The bigger the cookie,
the squirrel can use for cover whereas the squirrel can eat the smaller
cookies in the open since it can eat it right away and run to safety
Squirrels are more likely to eat a cookie in the open if they are farther from
cover. This finding suggest that... - correct answer✔✔Energetic costs
sometimes outweigh predation risks
T or F. The best strategy to maximize energy intake over time is
represented by finding a tangent line with the smallest slope found from the
, average travel time. - correct answer✔✔False. It would be a tangent line,
but not with the smallest slope because if the slope is too small, then the
animal would be spending too short of a time at the patch and would not
gain as much energy.
Do plants forage adaptively? If so, how? - correct answer✔✔Yes; they use
their roots and also may alter leaf growth depending on their sunlight needs
Which factors determine prey choice? - correct answer✔✔Energy content,
encounter rate, handling rate, search cost
How do organisms use energy (6 processes)? - correct
answer✔✔Locomotion, body temperature, nerve impulses, growth, storage,
reproduction
Define a calorie. - correct answer✔✔1 calorie is equal to the amount of
energy it takes to increase 1g of water by 1 degree Celsius
Describe direct calorimetry - correct answer✔✔Measuring heat produced
by putting a food object in a chamber and essentially blowing it up and then
measuring the change in temperature of the surrounding water of the
chamber
Describe indirect calorimetry - correct answer✔✔Measuring amount of heat
generated by determining the consumption of O2 and eliminated CO2
T or F. The "Red Deer" example in lecture gave an example of why animals
should not wait until an older age to reproduce because reproducing early
increases longevity. - correct answer✔✔False. It gave an example of how
reproduction is costly. The mothers that were nursing had increasing
probability of death because it causes them to be vulnerable to
predators/takes a lot of energy to nurse/missed opportunities to
thermoregulate or feed themselves, while the mother than weren't nursing
were able to live longer but eventually started to die off because they
weren't producing offspring
Which is not a reason why reproduction is costly?
A. Energy to make gametes
