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Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892

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BuyFindarrow_forward

Biology: The Dynamic Science (Mind...

4th Edition
Peter J. Russell + 2 others
ISBN: 9781305389892
Textbook Problem

What is the difference between a hormone and an exocrine secretion?

Summary Introduction

To review:

The difference between hormones and exocrine secretion.

Introduction:

Exocrine glands secrete enzymes by the use of ducts. On the other hand, hormones are secreted by the endocrine glands directly into blood without the help of ducts.

Explanation

The major differences between hormones and enzymes (Exocrine secretion) are as follows:

Hormones Enzymes
(a) They are derivatives of proteins, amino acids, and steroids. (a) They are proteins, except for ribozyme.
(b) They are messengers that provide signals to the cell for performing a particular function. (b) They are catalysts that enhance biochemical reactions.
(c) They are carried by blood to different parts of the body, giving signals to the cell. (c) They act at the place where they are formed.
(d) They are diffusible through a cell membrane. (d) They are nondiffusible through a cell membrane.
(e) They are produced in endocrine glands. (e) They are produced in exocrine glands...

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