Biochemistry
Biochemistry
6th Edition
ISBN: 9781305577206
Author: Reginald H. Garrett, Charles M. Grisham
Publisher: Cengage Learning
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 17, Problem 1P

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?

Expert Solution & Answer
Check Mark
Interpretation Introduction

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.

  18100×70 kg=12.6 kg

Therefore, a 70 kg man has 12.6 kg of carbon.

Percentage of carbon in a CO2 molecule,

  Molar mass of CO2 = 12+32 gmol-11212+32×100%=27.3%

  Cycled amount of carbon annually in CO2 = 3×1014 kg×27.3100=8.18×1013kg

Number of humans could be produced from this amount of carbon,

  =8.18×1013kg12.6 kg=6.5×1012

  6.5×1012 humans can be produced from the cycled CO2 annually.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Question: In this ecosystem the net productivity of the vegetation is 24 525 KJ m^-2 year^-1. Use this information and Figure 1 to calculate the energy stored in new tissues of the zebra in KJ m^-2 year^-1.
Form of energy  Kcal/m^2/yr Efficiency of energy transfer (%) Sunlight 600 000 n/a Chemical energy in producers 6 585   Chemical energy in primary consumers 81   Calculate the efficiency of energy transfer by the producers. That is, what percentage of the energy in sunlight was converted into chemical energy and incorporated into plant biomass? Calculate the efficiency of energy transfer by the primary consumers. What percentage of the energy in plant biomass was incorporated into the bodies of the primary consumers? What became of the rest of the energy? How much energy is available for secondary consumers? Based on the efficiency of energy transfer by primary consumers, estimate how much energy will be available to tertiary consumers. Draw a pyramid of production for the producers, primary consumers, and secondary consumers for this ecosystem (see example in your textbook).
A 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 - X
Knowledge Booster
Background pattern image
Biochemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biochemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Biology: The Unity and Diversity of Life (MindTap...
Biology
ISBN:9781337408332
Author:Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Air Pollution for Kids | Learn about the Causes and Effects of Air Pollution; Author: Learn Bright;https://www.youtube.com/watch?v=Yjtgu2CxtEk;License: Standard Youtube License