Biology (MindTap Course List)
11th Edition
ISBN: 9781337392938
Author: Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher: Cengage Learning
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Chapter 38, Problem 17TYU
Summary Introduction
To determine: Whether expanding knowledge of the molecular basis of plant signaling molecules could improve agricultural productivity in the future.
Introduction: Plant hormones are chemical molecules produced by plants in extremely low concentration for regulating growth and development. Many of the signaling molecules in plants are also involved in defensive response against disease and insects.
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Do you think that our expanding knowledge of the molecular basis of plant signaling molecules could improve agricultural productivity in the future? Explain your answer.
Hormones and signal pathways
Complete the following paragraph to describe signal transduction as it occurs within plants. Choices may be used more than once or
not at all.
Chemical signals called
play an important role in a plant's
ability to respond to a stimulus.
These signals bind to receptors, the first step in a cellular response called a
may be located in the plasma membrane, the cytoplasm, the
nucleus, or the endoplasmic reticulum.
The series of relay proteins or enzymes activated by the hormone binding the
receptor make up the
Some responses are immediate,
while others require a
like Ca*, to initiate a cellular
response.
The result of the transduction pathway is a
which is often
the transcription of specific genes, resulting in some measurable change.
hormones
reflex arc
signal transduction
pathway
Signal transducers
second messenger
response
Receptor proteins
first messenger
According to data from genome sequences, cytoplasmic dynein is absent in some plants (e.g.,Arabidopsis) and present in others (e.g.,rice).Does this finding surprise you? What else might you do to confirm or refute such a statement? How is it possible that higher plant cells could operate without cytoplasmic dynein?
Chapter 38 Solutions
Biology (MindTap Course List)
Ch. 38.1 - Prob. 1LOCh. 38.1 - Prob. 1CCh. 38.1 - Prob. 2CCh. 38.2 - Prob. 2LOCh. 38.2 - Prob. 3LOCh. 38.2 - Prob. 4LOCh. 38.2 - Prob. 1CCh. 38.2 - Prob. 2CCh. 38.2 - Which hormones are involved in each of the...Ch. 38.3 - Explain how varying amounts of light and darkness...
Ch. 38.3 - Prob. 6LOCh. 38.3 - Prob. 7LOCh. 38.3 - Prob. 8LOCh. 38.3 - Prob. 1CCh. 38.3 - Prob. 2CCh. 38.3 - Prob. 3CCh. 38.4 - Prob. 9LOCh. 38.4 - Prob. 1CCh. 38 - Prob. 1TYUCh. 38 - Prob. 2TYUCh. 38 - Prob. 3TYUCh. 38 - Prob. 4TYUCh. 38 - The stress hormone that helps plants respond to...Ch. 38 - Prob. 6TYUCh. 38 - Prob. 7TYUCh. 38 - Pfr, the active state of _______________, forms...Ch. 38 - Prob. 9TYUCh. 38 - Which signaling molecule triggers the release of...Ch. 38 - Prob. 11TYUCh. 38 - PREDICT State whether flowering in a short-day...Ch. 38 - PREDICT If you transplanted the short-day plant...Ch. 38 - EVOLUTION LINK What adaptive advantages are...Ch. 38 - Prob. 15TYUCh. 38 - Prob. 16TYUCh. 38 - Prob. 17TYU
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- explain the concept of signal transduction pathway and give one example in detail of a signal transduction pathway in plantsarrow_forwardPlease help this is hw and I want to know why I'm wrong Why do many plants use pathways that detect light to regulate their flowering? Selected Answer: This allows plants to link flowering to temperature, which corresponds to the season when conditions are optimal Answers: This allows plants to link flowering to day length, which corresponds to the season when conditions are optimal Flower petals carry out high levels of photosynthesis and require high light conditions This allows plants to link flowering to temperature, which corresponds to the season when conditions are optimal A minimum amount of light is always necessary for floweringarrow_forwardA mutation causes the vascular cambium in a plant to stop working How does this impact cellular respiration? ANSWER CHOICES ARE IN THE PHOTO. thanksarrow_forward
- Place the steps below in the correct order as they would occur within a signal transduction pathway. Drag and drop options into correct order and submit. For keyboard navigation... SHOW MORE ♥ An inactive signal transduction molecule is activated. A transcription factor enters the nucleus. An active signal transduction molecule binds a transcription factor. A gene is expressed. A receptor undergoes a conformational change. A ligand binds to a receptor. [3 Fuls Your answer II II II II IIarrow_forwardDuring signal transduction (a) the cell converts an extracellular signal into an intracellular signal that leads to a change in some cell process (b) a signaling molecule directly activates or represses several genes (c) each enzymecatalyzes production of one molecule of product (d) enzymes in the signal cascade remain active until the last component of the pathway alters a cellular process (e) the signal is terminated by cyclic AMParrow_forwardCan you answer all the parts to this question please (a) What are the advantages of the self-incompatibility (SI) system in plants? Give at least three advantages. (b) What are the differences between gametophytic SI and sporophytic SI?arrow_forward
- What is the first messenger in signal transduction? What are second messengers in signal transduction? What are the three results of signal transduction? What are three types of signaling processes based on their transduction distance? Give an example for each type. What are the signaling molecules in the plant? Please describe each of them briefly. How phytohormone degradation plays important roles in signaling pathways? Explain one of the phytohormones as an example. How plants respond to the environmental stimuli (biotic and abiotic stresses)? Please explain the amechanism and give an example.arrow_forwardWhat are three types of signaling processes based on their transduction distance? Give an example for each type. What are the signaling molecules in the plant? Please describe each of them briefly.arrow_forwardWhich option results when a plant hormone binds to its receptor? induces an increased DNA replication activity induces an inhibition of protein synthesis induces an enzyme-substrate cascade induces an increase in membrane permeability induces a change in gene expressionarrow_forward
- Phytochrome, plays an important role in flowering in many plants. It can also be used to determine when lettuce seeds germinate (shown in the figure below What is phytochrome likely doing in the lettuce seeds? Activating abscisic acid production Activating inhibitors of germination Inhibiting gibberellin synthesis Turning on germination-related genesarrow_forwardTHINK IT THROUGH You are a USDA official and must decide whether to allow the commercial planting of a new genetically modified strain of cabbage that is tolerant to a best-selling herbicide and has twice the vitamin content of regular cabbage. What questions would you ask of scientists before deciding whether to approve the new crop? What scientific data would you want to see? Would you also consult nonscientists? Would you consider ethical, economic, and social factors?arrow_forwardMetal hyperaccumulating plants have evolved this unique phenotype because _______ Select one: a. they can be used to clean soil (phytoremedation) b. prevent herbivory (“better not touch….you’re poison….” –Alice Cooper or an unassuming insect) c. they can accumulate pricey and precious metals (cha-ching!) d. they can avoid these metals (clearly you are too focused on a summer break- enjoy it).arrow_forward
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How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License