Biology: Concepts and Applications (MindTap Course List)
9th Edition
ISBN: 9781285427812
Author: Cecie Starr, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 28, Problem 2CT
Summary Introduction
To determine:
The reason for dark-skinned immigrants to have more chances of vitamin D deficiency as compared to light-skinned people that are native to Sweden.
Introduction:
Skin is the largest organ in the vertebrates. It is composed of two layers: epidermis (outer layer) and dermis (deeper layer). The color of the skin is determined by the pigment known as melanin.
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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
Adaptations to a Changing Environment
Why is it necessary for organisms to have the ability to adapt?
Why is the current environment making it difficult for organisms like the monarch butterfly to adapt?
Explain how organisms develop adaptations.
Chapter 28 Solutions
Biology: Concepts and Applications (MindTap Course List)
Ch. 28 - Prob. 1SQCh. 28 - Prob. 2SQCh. 28 - Prob. 3SQCh. 28 - Most ________ have many collagen and elastin...Ch. 28 - ________ is mostly plasma. a. Adipose tissue c....Ch. 28 - Prob. 6SQCh. 28 - Cells of ________ can shorten contract. a....Ch. 28 - Prob. 8SQCh. 28 - ________ detects and integrates information about...Ch. 28 - Prob. 10SQ
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