Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 23, Problem 2PEA
To determine
The percentage of energy lost when a group of small aquatic animals consumes 1,000 calories of algae.
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You are studying a woodland ecosystem with four trophic levels. For simplicity, let's
that
say
the system only consists of chipmunks which eat plants, snakes which eat the chipmunks,
and hawks which eat the snakes. The plants produce 5,550,000 kcal of energy, the
chipmunks have 780,000 kcal of energy available, and the snakes have 48,000 kcal of energy
available.
If each hawk needs 200 kcal of energy on average, how many hawks can this ecosystem
support? Use the 10% rule.
Small birds like that in (Figure 1) can migrate over long distances without feeding,
storing energy mostly as fat rather than carbohydrate. Fat is a good form of
energy storage because it provides the most energy per unit mass: 1.00 grams of
fat provides about 9.40 (food) Calories, compared to 4.20 (food) Calories per 1.00
grams of carbohydrate. Remember that Calories associated with food, which are
always capitalized, are not exactly the same as calories used in physics or
chemistry, even though they have the same name. More specifically, one food
Calorie is equal to 1000 calories of mechanical work or 4184 joules. Therefore, in
this problem use the conversion factor 1 Cal = 4184 J.
Figure
1 of 1
Part A
Consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 W (this rate represents the power consumption of the bird).
Assume that the bird consumes 4.00 g of fat to fly over a distance do without stopping for…
Small birds like that in (Figure 1) can migrate over long distances without
feeding, storing energy mostly as fat rather than carbohydrate. Fat is a good
form of energy storage because it provides the most energy per unit mass:
1.00 grams of fat provides about 9.40 (food) Calories, compared to 4.20 (food)
Calories per 1.00 grams of carbohydrate. Remember that Calories associated
with food, which are always capitalized, are not exactly the same as calories
used in physics or chemistry, even though they have the same name. More
specifically, one food Calorie is equal to 1000 calories of mechanical work or
4184 joules. Therefore, in this problem use the conversion factor
1 Cal 4184 J.
Figure
1 of 1
▸ View Available Hint(s)
db = 455 km
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▾ Part B
▶
How many grams of carbohydrate mcarbwould the bird have to consume to travel the same distance db?
Express your answer in grams
View Available Hint(s)
Correct
mcarb 8.95 g
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Part C
Previous Answers
Correct
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Chapter 23 Solutions
Integrated Science
Ch. 23.2 - Which is the correct hierarchy? a. ecosystem,...Ch. 23.2 - Prob. 2SCCh. 23.3 - Prob. 3SCCh. 23.7 - Prob. 4SCCh. 23.7 - Prob. 5SCCh. 23.7 - Prob. 6SCCh. 23.8 - Prob. 7SCCh. 23.9 - Prob. 8SCCh. 23.9 - Prob. 9SCCh. 23.9 - Prob. 10SC
Ch. 23.10 - Prob. 11SCCh. 23.10 - The kind and number of food organisms in an...Ch. 23.10 - Prob. 13SCCh. 23.12 - Prob. 14SCCh. 23.14 - Prob. 15SCCh. 23 - Prob. 1CQCh. 23 - Prob. 2CQCh. 23 - Prob. 3CQCh. 23 - List several biotic and abiotic factors that...Ch. 23 - Prob. 5CQCh. 23 - Prob. 6CQCh. 23 - Prob. 7CQCh. 23 - Prob. 8CQCh. 23 - Describe four different roles played by bacteria...Ch. 23 - Prob. 10CQCh. 23 - Prob. 11CQCh. 23 - Prob. 12CQCh. 23 - Prob. 13CQCh. 23 - Prob. 14CQCh. 23 - Prob. 16CQCh. 23 - Prob. 17CQCh. 23 - Prob. 18CQCh. 23 - Prob. 19CQCh. 23 - Prob. 20CQCh. 23 - Prob. 1PEACh. 23 - Prob. 2PEACh. 23 - Prob. 3PEACh. 23 - Prob. 4PEACh. 23 - Prob. 1PEBCh. 23 - Prob. 2PEBCh. 23 - Prob. 3PEBCh. 23 - Prob. 4PEB
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- Small birds like that in (Figure 1) can migrate over long distances without feeding, storing energy mostly as fat rather than carbohydrate. Fat is a good form of energy storage because it provides the most energy per unit mass: 1.00 grams of fat provides about 9.40 (food) Calories, compared to 4.20 (food) Calories per 1.00 grams of carbohydrate. Remember that Calories associated with food, which are always capitalized, are not exactly the same as calories used in physics or chemistry, even though they have the same name. More specifically, one food Calorie is equal to 1000 calories of mechanical work or 4184 joules. Therefore, in this problem use the conversion factor 1 Cal = 4184 J. Figure 1 of 1 > Review | Constants Consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 W (this rate represents the power consumption of the bird). Assume that the bird consumes 4.00 g of fat to fly over a distance do without…arrow_forwardA Hippogriff is a magical beast that had tail of a horse. It is very similar to another magical creature, the Griffin, with the horse rear replacing the lion rear. A slightly different breed of Hippogriffs, living in the Rathlin Island—the northernmost point in Northern Ireland, was known to have a growth rate of 0.2 individuals per individual—year. From an initial population of N0, it grew to 35 individuals after 5 years. After 17 more years, the total population of hippogriffs in Rathlin Island rose to 1588 individuals. Solve for the carrying capacity of Rathlin Island and the initial population of the said specie.arrow_forwardSmall birds like that in (Figure 1) can migrate over long distances without feeding, storing energy mostly as fat rather than carbohydrate. Fat is a good form of energy storage because it provides the most energy per unit mass: 1.00 grams of fat provides about 9.40 (food) Calories, compared to 4.20 (food) Calories per 1.00 grams of carbohydrate. Remember that Calories associated with food, which are always capitalized, are not exactly the same as calories used in physics or chemistry, even though they have the same name. More specifically, one food Calorie is equal to 1000 calories of mechanical work or 4184 joules. Therefore, in this problem use the conversion factor 1Cal=4184J. Consider a bird that flies at an average speed of 10.7 m/s and releases energy from its body fat reserves at an average rate of 3.70 W (this rate represents the power consumption of the bird). Assume that the bird consumes 4.00g of fat to fly over a distance db without stopping for feeding. How far will the…arrow_forward
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