Study Guide for Campbell Biology
Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
bartleby

Concept explainers

Question
Book Icon
Chapter 39, Problem 1IQ

a.

Summary Introduction

To determine: What is signal and receptor.

Introduction: A process through which the plants convert their plastids and etioplast that are present inside its chloroplast is known as de-etiolation. The plants that have undergone etiolation process would be growing in complete darkness and are generally thin, long and whilte in color.

a.

Expert Solution
Check Mark

Explanation of Solution

In the process of de-etiolation, signal is light and the receptor is a phytochrome, a blue pigment that is present in the cytosol.

b.

Summary Introduction

To determine: The important steps that are involved in the process of transduction of the signal.

Introduction: A process through which the plants convert their plastids and etioplast that are present inside its chloroplast is known as de-etiolation. The plants that have undergone etiolation process would be growing in complete darkness and are generally thin, long and whilte in color.

b.

Expert Solution
Check Mark

Explanation of Solution

The phytochrome pigment is activated by light. This activated phytochrome triggers atleast two signal pathways. One pathway results in the production of cGMP (cyclic guanosine monophosphate). The other pathway results in the increase of cytosolic calcium or Ca2+ levels. Both the pathways activate specific kinases enzymes. Some of them might activates several transcription factors that change the expression of genes.

c.

Summary Introduction

To determine: What is the growth response of plants and proteins involved in the plant’s growth response.

Introduction: Light is significant for the growth of the plants, however, it is essential to direct the growth as well as the development of plants. Sunlight serves as the signal to initiate and regulate the process of photomorphogenesis and photoperiodism. The two-light systems that play a major in the growth responses are the red light sensitive system and the blue light sensitive system.

c.

Expert Solution
Check Mark

Explanation of Solution

The growth response of a plant is generally dependent on the stimulus or light. Changes in the plant such as the expansion of leaves, elongation of roots as well as the slowing of stem part elongation are collectively known as the growth response of the plants. In the de-etiolation process, levels of growth-regulating hormones are altered and the production of new enzymes is activated. This activation leads to the production of chlorophyll or the photosynthesis process.

The proteins that are involved in the growth responses are auxin (protein for expansion), cytokinin (protein for mitosis), and cytokin (protein for apoptosis).

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
In plant physiology, What  is leaf abscission and how is it controlled by the interaction between auxin and ethylene?
Name the synthetic growth substances from plant hormones abscisic acid and ethylene and discuss their commercial applications
Please type the answer to all parts of this question  Answer the following question about the Quiescent Center (QC) of the root meristem. (a) What is the QC of the root meristem?  (b) How is QC identity established? (Describe the plant hormone(s) and genes that are involved in QC development)
Knowledge Booster
Background pattern image
Biology
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.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
Human Anatomy & Physiology (11th Edition)
Biology
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:PEARSON
Text book image
Biology 2e
Biology
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:OpenStax
Text book image
Anatomy & Physiology
Biology
ISBN:9781259398629
Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter
Publisher:Mcgraw Hill Education,
Text book image
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
Text book image
Laboratory Manual For Human Anatomy & Physiology
Biology
ISBN:9781260159363
Author:Martin, Terry R., Prentice-craver, Cynthia
Publisher:McGraw-Hill Publishing Co.
Text book image
Inquiry Into Life (16th Edition)
Biology
ISBN:9781260231700
Author:Sylvia S. Mader, Michael Windelspecht
Publisher:McGraw Hill Education