HUMAN BIOLOGY
HUMAN BIOLOGY
16th Edition
ISBN: 9781260233032
Author: Mader
Publisher: RENT MCG
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Chapter 3, Problem 1A
Summary Introduction

Introduction:

The “surface area-to-volume” ratio helps in explaining the relation between a cell’s surface area and its size.

Expert Solution & Answer
Check Mark

Answer to Problem 1A

Correct answer:

As the cell size decreases, the ratio its surface area to volume increases. Therefore, option (a) is correct.

Explanation of Solution

Reasons for the correct statement:

The surface area to volume ratio increases, when there is decrease in the size of the cell. Accordingly, as the cells have smaller size, they tend to possess a surface area that is large, and so, as the size of the cell decreases, the ratio increases.

Option (a) is given as “increases”.

“As the size of a cell decreases, the ratio of its surface area to volume increases”, it is the right answer”.

Hence, option (a) is correct.

Reasons for the incorrect statements:

Option (b) is given as “decreases”.
As the size of a cell will increase, then the ratio of surface area to volume would decrease, not when the cell size will decrease. So, it is a wrong answer.

Option (c) is given as “stays the same”.
As the cell size decreases, the ratio its surface area to volume increases, however it does not remain the same. So, it is a wrong answer.

Hence, options (b) and (c) are incorrect.

Conclusion

:

As the cell size decreases, then the ratio to its surface area to volume increases.

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Chapter 3 Solutions

HUMAN BIOLOGY

Ch. 3.2 - Summarize how eukaryotic cells evolved from...Ch. 3.2 - Summarize the role of the plasma membrane in a...Ch. 3.2 - Describe the main differences between a eukaryotic...Ch. 3.2 - Describe the possible evolution of the nucleus,...Ch. 3.3 - Prob. 1LOCh. 3.3 - Prob. 2LOCh. 3.3 - Explain how tonicity relates to the direction of...Ch. 3.3 - Compare passive-transport and active-transport...Ch. 3.3 - Summarize how eukaryotic cells move large...Ch. 3.3 - Summarize how the fluid-mosaic model describes the...Ch. 3.3 - Prob. 2CYPCh. 3.3 - Prob. 3CYPCh. 3.4 - Describe the structure of the nucleus and explain...Ch. 3.4 - Summarize the function of the organelles of the...Ch. 3.4 - 3. Explain the role and location of the...Ch. 3.4 - Prob. 1CYPCh. 3.4 - Explain how the nucleus, ribosomes, and rough...Ch. 3.4 - Prob. 3CYPCh. 3.5 - Prob. 1LOCh. 3.5 - Summarize the major protein fibers In the...Ch. 3.5 - Prob. 3LOCh. 3.5 - Prob. 4LOCh. 3.5 - Prob. 1CYPCh. 3.5 - Prob. 2CYPCh. 3.5 - Prob. 3CYPCh. 3.6 - Prob. 1LOCh. 3.6 - Prob. 2LOCh. 3.6 - Summarize the roles of the anaerobic and aerobic...Ch. 3.6 - Prob. 4LOCh. 3.6 - How might a meal of a cheeseburger and fries be...Ch. 3.6 - Even though Figure 3B does not indicate the need...Ch. 3.6 - Summarize the roles of enzymes in chemical...Ch. 3.6 - Prob. 2CYPCh. 3.6 - Explain why the ATP cycle resembles that of a...Ch. 3.6 - Prob. 4CYPCh. 3 - Prob. 1ACh. 3 - The cell theory states that all life comes from...Ch. 3 - Prob. 3ACh. 3 - 4.The endosymbiotic theory explains which of the...Ch. 3 - Which of the following is not part of the...Ch. 3 - Prob. 6ACh. 3 - Prob. 7ACh. 3 - Prob. 8ACh. 3 - Prob. 9ACh. 3 - Prob. 10ACh. 3 - Prob. 11ACh. 3 - Prob. 12ACh. 3 - The cytoskeleton of a cell consists of all of the...Ch. 3 - Prob. 14ACh. 3 - Prob. 15ACh. 3 - Prob. 16ACh. 3 - Prob. 17ACh. 3 - Prob. 18ACh. 3 - Prob. 1TCCh. 3 - Prob. 2TCCh. 3 - Prob. 3TC
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