Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Refer to figure 1C of the Science Article. Which methylxanthine spray produces the lowest antifeeding activity.
C
Antifeeding activity
(percent of leaf
area remaining)
40
IBMX (•): 3-isobutylmethylxanthine, synthetic
Caffeine (A): naturally present in plants
Theophylline (o): naturally present in small
amounts in tea and cocoa beans, used to
treat asthma
8-phenyltheophylline (0): synthetic, works by
a different mechanism.
0000
Ο
0 0.1 0.3
1.0
35
Methylxanthine spray (gram-percent)
IBMX
Caffeine
Theophylline
8-phenyltheophylline
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Transcribed Image Text:Refer to figure 1C of the Science Article. Which methylxanthine spray produces the lowest antifeeding activity. C Antifeeding activity (percent of leaf area remaining) 40 IBMX (•): 3-isobutylmethylxanthine, synthetic Caffeine (A): naturally present in plants Theophylline (o): naturally present in small amounts in tea and cocoa beans, used to treat asthma 8-phenyltheophylline (0): synthetic, works by a different mechanism. 0000 Ο 0 0.1 0.3 1.0 35 Methylxanthine spray (gram-percent) IBMX Caffeine Theophylline 8-phenyltheophylline
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