Concept explainers
Global Carbon Dioxide Cycling Expressed as Human Equivalents
If 3 x 1014 kg of CO2 are cycled through the biosphere annually, how many human equivalents (70-Kg people composed of 18% carbon by weight) could be produced each year from this amount of CO2?
Interpretation: The number of human equivalents should be determined which could be produced each year from the given amount of carbon dioxide.
Introduction: The biochemical cycle of carbon is the process in which carbon is cycled among the geosphere, hydrosphere, pedosphere, biosphere and atmosphere of the earth. The main form of carbon in the atmosphere is CO2. CO2 is a greenhouse gas and recent attempts were made to reduce the amount of which in the atmosphere.
Explanation of Solution
A human is made of 18% of carbon.
Therefore, a 70 kg man has 12.6 kg of carbon.
Percentage of carbon in a CO2 molecule,
Number of humans could be produced from this amount of carbon,
Want to see more full solutions like this?
Chapter 17 Solutions
Biochemistry
- In relation to energy transfer in ecosystem,explain the statement"10kg of deer's meat is equivalent to 1kg of lion's flesh".arrow_forwardA Lab Data NaHC 1 budy volume U₂ (ML) Tube 1 Green Light 3.3 3.5 3.7 3.8 4 2.1 H June cre Rate of volume change(- hr Time(min) How to Calculate Rate of Volume Change Green light Rate of photosynthesis mL Rate of photosynthesis ( -) = Rate of volume change light mL hr hr Time (min) 0 5 10 15 20 Rate of volume change (mL/hr) Tube 2 Green Control 3.3 3 2.6 2.3 1.9 -4.2 Tube 1 Blue Light 2.9 4.2 5.5 6.7 8 15.3 шп hr × 60(¹ Tube 2 Blue Control 2.9 2.6 2.2 1.9 1.5 -4.2 Blue light mL hr Rate of volume change covered liji - Xarrow_forwardUnderstanding Human Energy Consumption During Exercise Energy production in animals is related to oxygen consumption. The ruby-throated hummingbird consumes about 250 mL of oxygen per hour during its migration across the Gulf of Mexico. Use this number and the data in problem 11 to determine a conversion factor for energy expended per liter of oxygen consumed. If a human being consumes 12.7 kcal/min while running 8-minute miles, how long could a human run on the energy that the hummingbird consumes in its trans-Gulf flight? How many 8-minute miles would a person have to run to lose 1 pound of body fat?arrow_forward
- The following data were collected from the light-dark bottle incubation experiment for photosynthesis and respiration measurements of a 2-m deep column of water body. The incubation experiment was conducted during the 6.5-hour period from dawn to noon. Please calculate the net photosynthesis (NP), gross photosynthesis (GP), and respiration (R) per square meter of this body of water during a 24-hour day period. Show your calculation process. bottle Dissolved oxygen concentration (mg/L) initial bottle 4.02 light bottle 6.75 dark bottle 2.98arrow_forwardWhat is the rate of photosynthesis for the Green light and the blue lightarrow_forward1. 2. 3. 4. 5. 6. Many people believe that forests are net producers of oxygen. However, for net production of oxygen gas to occur, photosynthesis must be occurring faster than cellular respiration. The following equations summarize the overall reactions of photosynthesis and respiration: 6 COz+6 HO C6H12O6 + 6 0₂ C6H12O6 + 6 O2 →6 CO2 + 6 H₂O a) If there were a net production of oxygen gas in an ecosystem, what chemical would you also expect to accumulate in the ecosystem? Explain. b) Predict how a net production of oxygen gas in an ecosystem would affect the total biomass of the ecosystem over time. c) If the rate of photosynthesis were reduced on a global scale, what impact might this have on climate change? Discuss the term "Homeostasis" under the following headings: a) Definition b) The mechanism of "negative feedback". Describe how this type of feedback will achieve homeostasis and use the following words to illustrate: monitor, control centre, regulator. c) The homeostatic…arrow_forward
- SC5 X .core.learn.edgenuity.com/player/ ence SC5181 A Examine the map. NA GPP, July 2016 GPP ensemble mean (g C m² mo¹¹) 0 300 Mark this and return (Courtesy of Oak Ridge National Labs DAAC) Which statement best supports the differences in GPP shown on the map? O The eastern part of the country is more humid, so it has higher rates of photosynthesis. 3 CONUS GPP, July 2016 DELL 600< Save and Exitarrow_forwardIf the energy received by 5 m² area in 330 seconds is 4100KJ. Find the value of Solar constant ?arrow_forwardEach nitrous oxide (N,O) molecule has the atmospheric warming potential of carbon dioxide. half twice 50 times 100 times O 300 timesarrow_forward
- BiochemistryBiochemistryISBN:9781305577206Author:Reginald H. Garrett, Charles M. GrishamPublisher:Cengage LearningBiology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology: The Unity and Diversity of Life (MindTap...BiologyISBN:9781337408332Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa StarrPublisher:Cengage Learning
- Biology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning