EBK LIFE: THE SCIENCE OF BIOLOGY
EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
bartleby

Videos

Question
Book Icon
Chapter 9, Problem 1Q
Summary Introduction

To review:

The mechanism used by the human body for supplying glucose to its organs when food intake stops.

Introduction:

The main source of energy in the human body is glucose. The human body gets glucose from food. The body stores the glucose as glycogen. The human body uses this glycogen as a source of glucose when there is lack of glucose intake. When the stored glycogen is used up, the body uses other molecules as a source of glucose, which involves the process of gluconeogenesis. The graph showing the ways, by which the human body cells shift in their rate of glucose oxidation and the source of glucose oxidized after food intake has stopped is given below:

EBK LIFE: THE SCIENCE OF BIOLOGY, Chapter 9, Problem 1Q

Expert Solution & Answer
Check Mark

Explanation of Solution

When the food intake stops for a long time, then gradually the reserve glycogen that was used as the source of glucose declines. Then, the liver along with the kidneys produce glucose by using other molecules. These molecules include glucogenic amino acids, lactate, and glycerol. This process of producing glucose by using other molecules is known as gluconeogenesis.

The liver also uses some other sugars, such as sucrose and galactose as a source of glucose. The liver produces ketones from fats in case of lack of glucose as a source of energy. This is known as ketogenesis. Thus, declining glucose level in the body induces production of an alternative source of energy.

Conclusion

Therefore, it can be concluded that the human body uses other molecules as a source of glucose to fulfill the need for glucose in its organs. This process is known as gluconeogenesis.

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
Please finish the chart at the bottom. Some of the answers have been filled in.
9. Aerobic respiration of one lipid molecule. The lipid is composed of one glycerol molecule connected to two fatty acid tails. One fatty acid is 12 carbons long and the other fatty acid is 18 carbons long in the figure below. Use the information below to determine how much ATP will be produced from the glycerol part of the lipid. Then, in part B, determine how much ATP is produced from the 2 fatty acids of the lipid. Finally put the NADH and ATP yields together from the glycerol and fatty acids (part A and B) to determine your total number of ATP produced per lipid. Assume no other carbon source is available. 18 carbons fatty acids 12 carbons 9 glycerol A. Glycerol is broken down to glyceraldehyde 3-phosphate, a glycolysis intermediate via the following pathway shown in the figure below. Notice this process costs one ATP but generates one FADH2. Continue generating ATP with glyceraldehyde-3-phosphate using the standard pathway and aerobic respiration. glycerol glycerol-3- phosphate…
Normal dive (for diving humans) normal breathing dive normal breathing Oz level CO2 level urgent need to breathe Oz blackout zone high CO2 triggers breathing 6. This diagram shows rates of oxygen depletion and carbon dioxide accumulation in the blood in relation to the levels needed to maintain consciousness and trigger the urgent need to breathe in diving humans. How might the location and slope of the O₂ line differ for diving marine mammals such as whales and dolphins? • How might the location and slope of the CO₂ line differ for diving marine mammals such as whales and dolphins? • • Draw in predicted lines for O2 and CO2, based on your reasoning above. How might the location of the Urgent Need to Breathe line and the O2 Blackout Zone line differ for diving marine mammals? What physiological mechanisms account for each of these differences, resulting in the ability of marine mammals to stay submerged for long periods of time?
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology 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
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
Text book image
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Text book image
Nutritional Sciences: From Fundamentals to Food, ...
Health & Nutrition
ISBN:9781337486415
Author:McGuire
Publisher:Cengage
Text book image
Aquaculture Science
Biology
ISBN:9781133558347
Author:Parker
Publisher:Cengage
Text book image
Human Biology (MindTap Course List)
Biology
ISBN:9781305112100
Author:Cecie Starr, Beverly McMillan
Publisher:Cengage Learning
Human digestive system - How it works! (Animation); Author: Thomas Schwenke;https://www.youtube.com/watch?v=X3TAROotFfM;License: Standard Youtube License