What is Life? A Guide to Biology with Physiology
What is Life? A Guide to Biology with Physiology
3rd Edition
ISBN: 9781464157745
Author: Jay Phelan
Publisher: W. H. Freeman
bartleby

Videos

Question
Book Icon
Chapter 21, Problem 1SA
Summary Introduction

To analyze:

Why the evolution of multicellular organisms has led to the development of circulatory systems.

Introduction:

A circulatory system is responsible for transport of various substances through the body of the organism. There are various types of circulatory systems.

Expert Solution & Answer
Check Mark

Explanation of Solution

Cells in a multicellular organism are not in direct contact with the external environment. This means that the exchange of gases, uptake of nutrients, expulsion of wastes and other such processes cannot be carried out in a simple, straightforward way. Simple diffusion, like in the case of unicellular organisms, is not enough to perform these functions. Dedicated delivery and waste removal systems became necessary. This is the reason for the development of the circulatory systems.

Conclusion

In multicellular organisms, most of the cells of an organism are not in direct contact with the external environment. Diffusion cannot adequately transport essential nutrients and wastes into and out of the cells. A dedicated delivery and removal system became necessary, and this led to the development of circulatory systems.

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
In a single cardiac cycle, if EDV increases, what do you predict about the upcoming SV? Will SV increase or decrease or not change? Why?
Why is it important to study human cardiovascular function? not less than 5 sentences How can people keep their cardiovascular health healthy?
Why do implantable defibrillators require far less power on their own than a pacemaker?
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
Human Physiology: From Cells to Systems (MindTap ...
Biology
ISBN:9781285866932
Author:Lauralee Sherwood
Publisher:Cengage Learning
The Cardiovascular System: An Overview; Author: Strong Medicine;https://www.youtube.com/watch?v=Wu18mpI_62s;License: Standard youtube license