(OR)CAMPBELL BIO W/LAB ACCESS (LL) >IP
10th Edition
ISBN: 9781323228708
Author: Reece
Publisher: PEARSON C
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Chapter 39.1, Problem 3CC
Summary Introduction
To predict: Whether Viagra will be helpful in occurrence of normal de-etiolation in leaves of aurea mutant tomato.
Concept introduction:
In de-etiolation process, the first step is the reception of signals from the light. This reception is done by phytochrome that is present in the plasma membrane. This phytochrome acts as a first messenger that initiates the de-etiolation.
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HSP60 (relative change)
HSP24 (relative change)
3.00-
2.00-
1.004
0.00-
0.75-
1.00 b
0.50-
0.25-
0.00
0
- low N, heat stress
Ohigh N, heat stress
10 am ->
a
12 24
36
48
Time (h)
What hypothesis do you think was being
tested in this experiment
Why are there no controls for HSP 24 but
there is for HSP 60
low N, control
high N, control
heat stress
event
72 81 96
[Choose ]
[Choose ]
-8
120
Assume that two pigments, red and bluc, mix to give the normal purple color of petunia petals. Separate biochemical pathways
synthesize the two pigments, as shown in pathways I and Il in the accompanying diagram. "White" refers to compounds that are
not pigments (total lack of pigment results in a white petal). Red pigment forms from a yellow intermediate that is normally at a
concentration loo kow to color petals. Bluc mixed with yellow makes green. Assume that no mutations are lethal.
Pathway I..
White
Blue
Pathway I White,
Yellow
Red
Pathway II
White,
White,
A third pathway, whose compoundk do not contribute pelal pigmentation, normally docs not allfect the bluc and red pathways.
However, if one of its intermediates (white3) should build up in concentration, it can be converted into the ycllow intermediate of
the red pathway. In the diagram, the letiers A through E represent enzymes. The enzymes' correspoonding genes, all of which are
unlinked, may be symbolized by the same letters.…
A group of students have carried out an experiment to investigate the relationship between the amount of growth hormone BAP in the culture medium and the growth of shoot of jckplant.They have supplemented the medium with BAP but there is another student suggested that hundred percent shooting efficiency will be obtained when the the culture media is suplemented BAP and NAA.From your point of view, state which option will you choose and explain why?
Chapter 39 Solutions
(OR)CAMPBELL BIO W/LAB ACCESS (LL) >IP
Ch. 39.1 - What are the morphological differences between...Ch. 39.1 - Cycloheximide is a drug that inhibits protein...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - WHAT IF? If a plant has the double mutation err...Ch. 39.2 - Prob. 3CCCh. 39.3 - If an enzyme in field-grown soybean leaves is most...Ch. 39.3 - WHAT IF? If a plant flowers in a controlled...Ch. 39.3 - MAKE CONNECTIONS Plants detect the quality of...Ch. 39.4 - Prob. 1CC
Ch. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.5 - What are some drawbacks of spraying fields with...Ch. 39.5 - Chewing insects mechanically damage plants and...Ch. 39.5 - Many fungal pathogens get food by causing plant...Ch. 39.5 - WHAT IF? Suppose a scientist finds that a...Ch. 39 - What are two common ways by which signal...Ch. 39 - Is there any truth to the old adage, "One bad...Ch. 39 - Why did plant physiologists propose the existence...Ch. 39 - Plants that have acclimated to drought stress are...Ch. 39 - Prob. 39.5CRCh. 39 - Prob. 1TYUCh. 39 - Prob. 2TYUCh. 39 - Prob. 3TYUCh. 39 - How may a plant respond to severe heat stress? (A)...Ch. 39 - Level 2: Application/Analysis 5. The signaling...Ch. 39 - If a long-day plant has a critical night length of...Ch. 39 - Prob. 7TYUCh. 39 - DRAW IT Indicate the response to each condition by...Ch. 39 - Level 3: Synthesis/Evaluation 9. EVOLUTION...Ch. 39 - SCIENTIFIC INQUIRY A plant biologist observed a...Ch. 39 - SCIENCE. TECHNOLOGY, AND SOCIETY Describe how our...Ch. 39 - Prob. 12TYUCh. 39 - Prob. 13TYU
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