BIOLOGY (LL)
5th Edition
ISBN: 9781264115495
Author: BROOKER
Publisher: MCG
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Chapter 39.3, Problem 1CS
Summary Introduction
To predict: The similarity in the structure and functions of the tight junctions of the animal intestinal epithelial cells and the root endodermal cells in the plants.
Introduction: The tight junctions are present in the epithelial cells which help to seal the cells in the narrow band below the apical surface. These tight junctions consist of various types of proteins like adhesions, claudins and so on. They help in preventing any leakage or flow of ions apart from the selectively movable ions across the membrane of the cells.
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Objective: Drawing a plan diagram of a frog intensine viewed under a microscope, as well as calculating actual size and drawing magnification of the width of the intestine.
Please see the attached microscopic image of the frog intestine when viewed under the microscope, and an example labeled drawing of the intestine. I approximated that 3-4 cells would fit across (frog intenstine is much smaller when viewed under microscope, photo taken appears much longer).
1. Draw a plan diagram and label the following: • Longitudinal smooth muscle • Columnar epithelial tissue • Circular smooth muscle • Villi • Areolar connective tissue • Lumen
2. Calculate actual size and drawing magnification of the width of the intestine. Include formula used and calculations.
2. Add a scale bar with actual size next to the diagram.
3. Give the drawing a descriptive title and record total magnification.
Thank you!
Exercise 6 & 7:
Acid-fast stain: what component/structure in the cell wall is stained?; be able to identify the stain technique
and structure stained by sight (micrograph), give example genera (Nocardia and Mycobacterium), disease-
causing species, and diseases
Endospore stain: what component/structure in the cell wall is stained?; be able to identify the stain technique
and structure stained by sight (micrograph), know what endospores are and example genera w/ endospores
(Bacillus and Clostridium);
Capsule stain: be able to identify the stain technique and structure stained by sight (micrograph), and know
how stain is performed (negative stain, why brief heat-fixation and followed by a positive stain)
Flagella stain: be able to identify the stain technique and structure stained by sight (micrograph), identify the
purpose of the stain, differentiate flagellar arrangement: peritrichous, monotrichous, lophotrichous,
amphitrichous, etc)
discuss for
or against 3D printing in bioengineering tissue for
medical purposes. Make sure to think about all four types
of tissue studied this week: epithelial tissue, muscles,
connective tissue (blood, bone, fat, cartilage,
ligaments...), and nervous tissue.
Chapter 39 Solutions
BIOLOGY (LL)
Ch. 39.2 - Describe the direction of water movement when a...Ch. 39.3 - Prob. 1CSCh. 39.4 - Prob. 1CSCh. 39.4 - Prob. 1CCCh. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.4 - Prob. 4CCCh. 39.4 - Prob. 5CCCh. 39.4 - Prob. 1EQCh. 39.4 - Prob. 2EQ
Ch. 39.4 - Prob. 6CCCh. 39.4 - Core Skill: Connections Look back to Figure 36.16,...Ch. 39 - Prob. 1TYCh. 39 - Prob. 2TYCh. 39 - Prob. 3TYCh. 39 - Prob. 4TYCh. 39 - Prob. 5TYCh. 39 - Which of the following statements best explains...Ch. 39 - What features of water explain how it can be drawn...Ch. 39 - Prob. 8TYCh. 39 - Prob. 9TYCh. 39 - Prob. 10TYCh. 39 - Prob. 1CQCh. 39 - Prob. 2CQCh. 39 - Prob. 3CQCh. 39 - Prob. 1COQCh. 39 - Prob. 2COQ
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