Biology: Life on Earth (11th Edition)
11th Edition
ISBN: 9780134168296
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
Publisher: PEARSON
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Textbook Question
Chapter 31, Problem 4RQ
What five specific threats to biodiversity are described in this chapter? Provide an example of each.
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Hydrogen bonds play an important role in stabilizing and organizing biological macromolecules. Consider the four macromolecules discussed. Describe three examples where hydrogen bond formation affects the form or function of the macromolecule.
Imagine you are a botanist. Below are characteristics of a never-before described plant species recently identified as part of the ‘All Taxa Biodiversity Inventory’ (ATBI).
Field Notes: Specimen collected from shaded area along stream in South Cumberland State Park (Grundy County, TN).
Laboratory Analysis:
Body: Large leaves emerging from underground rhizome.
Size: 63 cm
Chromosomal Analysis: Plant body is diploid—chromosome number of 44.
Lignin test: Positive
Cuticle: Present
Leaves: Present—large with branched veins. Underside has sori (containing haploid spores).
Roots: Present—branch from the inside.
Stem: Present—vascular tissue (xylem & phloem) present.
Life History: Diploid sporophyte dominant generation. Haploid spores germinate into heart-shaped, haploid, gametophyte. Water required for fertilization; no seed is produced. Diploid zygote develops into sporophyte.
Explain which domain, kingdom and phylum you believe this plant should be classified…
CUÁ
Glycine
A C C
Newly formed molecule
Glycine Arginine Proline
Alanine
A C C
CC G
GGAUUGGUGGGGC
Structure X
I
mRNA
Chapter 31 Solutions
Biology: Life on Earth (11th Edition)
Ch. 31 - A factor that increases humanity's ecological...Ch. 31 - Prob. 2MCCh. 31 - Prob. 3MCCh. 31 - Prob. 4MCCh. 31 - Which of the following is not true of a population...Ch. 31 - Prob. 1FTBCh. 31 -
2. Products or processes by which functioning...Ch. 31 - Many of the benefits that humans derive from...Ch. 31 - Prob. 4FTBCh. 31 -
5. The smallest population of a species that is...
Ch. 31 -
6. A Native American saying tells us that “We do...Ch. 31 - Prob. 1RQCh. 31 - What is ecological economics? Why is it important?Ch. 31 - Prob. 3RQCh. 31 -
4. What five specific threats to biodiversity are...Ch. 31 - Why are efforts to protect monarch butterflies a...Ch. 31 - List some reasons that the ecological footprints...Ch. 31 -
2. Search for and describe some examples of...
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