Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
Related questions
Concept explainers
Microscopic examination
The analysis of minute organisms, cellular organization of any biological structure, and composition of body fluids with the help of a microscope is known as microscopic examination. The magnification of specimens or samples under study helps in attaining a clearer picture of it.
Gram Staining
Named after Hans Christian Gram, a Danish bacteriologist, Gram stain is one of the most powerful staining techniques within microbiology. This technique was introduced in 1882 to identify pneumonia-causing organisms. The Gram staining technique uses crystal violet or methylene blue as primary staining colors to distinguish gram-positive from gram-negative organisms. Under a microscope, the gram-positive organisms appear purple-brown, retaining the primary color. Gram-negative organisms appear pink or red as they do not acquire the color of the primary stain.
Question
Using the information and drawings, answer the question below:
Explain the correlation between the original green area and the area stained by the iodine.
Transcribed Image Text:Procedure 2: What's Necessary for Photosynthesis
and Starch Accumulation?
Variegated means that not all of the leaf is green. The varlegated geranium leaves you will be using
have a white border that lacks the pigments found in chloroplasts. After sketching the outline of your
leaf, the foil, and the variegation, you will first remove the chlorophyll and other pigments of the leaf
by boiling it in alcohol, and then you will add iodine potassium iodide (IKI) to stain the starch stored
in a leaf.
MATERIALS
• 1 clean 250-mL beaker; 1 clean
500-mL beaker
• Variegated geranium leaf
• Alcohol solution (80% ethanol)
. Petri dish Hotplate and tongs
• IKI solution
PROCEDURE
1. Obtain two 500-ml beakers.
2. Add about 100 mL of 80% ethanol to one beaker.
3. Add about 200 mL of tap water to the other beaker.
4. Place the water beaker on your hotplate and then turn it on.
5.
Have one lab member in charge of the hotplate. The setting on the hotplate should be adjusted
so that the water in the beaker stays at a gentle boil.
6. Obtain one leaf from a variegated geranium plant at the side of the room.
7. Sketch a simple outline of the leaf below.
Ivars Cell Energy: Photosynthesis and Respiration 29
Transcribed Image Text:8. Once the beaker with water starts boiling, put the beaker with ethanol on the hotplate.
9. Immerse the leaf in boiling water for 10-15 seconds to break down the plasma membranes of
the cells, and then transfer the leaf to the beaker of ethanol that has been brought to a boil.
10. Place the leaf in boiling alcohol for about 5 minutes, until the leaf looks white. Note which
pigments (colors) are removed in the hot alcohol.
11.
After the leaf has been bleached of its colored pigments, place it in a Petri dish, rinse with tap
water, and immerse it with iodine solution. Sketch the leaf as it appears below.
12. Clean up. Make sure to remove all grease pencil marks and rinse out all glassware. The leaves
can be thrown away but keep the foil and paperclips.
QUESTION
Explain the correlation between the original green area and the area stained by the iodine.
30
Cell Energy: Photosynthesis and Respiration erries
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
Knowledge Booster
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.Recommended textbooks for you
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:
9780134580999
Author:
Elaine N. Marieb, Katja N. Hoehn
Publisher:
PEARSON
Biology 2e
Biology
ISBN:
9781947172517
Author:
Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:
OpenStax
Anatomy & Physiology
Biology
ISBN:
9781259398629
Author:
McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:
Mcgraw Hill Education,
Molecular Biology of the Cell (Sixth Edition)
Biology
ISBN:
9780815344322
Author:
Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter
Publisher:
W. W. Norton & Company
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:
9781260159363
Author:
Martin, Terry R., Prentice-craver, Cynthia
Publisher:
McGraw-Hill Publishing Co.
Inquiry Into Life (16th Edition)
Biology
ISBN:
9781260231700
Author:
Sylvia S. Mader, Michael Windelspecht
Publisher:
McGraw Hill Education