CAMPBELL BIOLOGY W/MASTERINGBIO CODE >
16th Edition
ISBN: 9781323573457
Author: Campbell
Publisher: PEARSON C
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Chapter 28.3, Problem 2CC
WHAT IF? Ø Would you expect the plastid DNA of photosynthetic dinoflagellates, diatoms, and golden algae to be more similar to the nuclear DNA of plants (domain Eukarya) or to the chromosomal DNA of cyanobacteria (domain Bacteria)? Explain.
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(a) Explain why the term " junk dna" may not be such an accurate description?
(b) provide 1 similarity and 1 difference between the structure of individual genes of eukaroyotes and prokayotes
Classifiation of Llfe
A new organism was discovered in a deep sea vent at the bottom of the
ocean. The researchers collected the sample and made careful
observations of it. The picture at right shows a microscopic image
captured at 1000X its actual size.
Below are some other observations made:
• When DNA was isolated from the cell, it was mixed with an equal
portion of histone proteins
• There are no visible organelles present inside the cell
• The specimen seem to die in the presence of oxygen
• Able to live in conditions that mimic deep sea vents without any
external food source provided
Based on these observations, determine each of the following and
provide a clear rationale.
A) To which domain would you assign this organism? Why?
B) Propose a hypothesis of how they obtain nutrients. Are these most
likely autotrophs or heterotrophs? Provide a rationale.
Choose the CORRECT order of compaction of DNA in eukaryotes.
DNA → nucleosome → loops → fiber → "beads on a string" →
chromosome
DNA → nucleosome → "beads on a string" → fiber → loops →
chromosome
DNA → nucleosome → fiber → loops → "beads on a string" →
chromosome
DNA → "beads on a string" → fiber → nucleosome → loops →
chromosome
DNA → fiber → loops → nucleosome → "beads on a string" →
chromosome
Chapter 28 Solutions
CAMPBELL BIOLOGY W/MASTERINGBIO CODE >
Ch. 28.1 - Cite at least four examples of structural and...Ch. 28.1 - Summarize the role of endosymbiosis in eukaryotic...Ch. 28.1 - Prob. 3CCCh. 28.2 - Why do some biologists describe the mitochondria...Ch. 28.2 - WHAT IF? DNA sequence data for a diplomonad, a...Ch. 28.3 - Explain why forams have such a well-preserved...Ch. 28.3 - WHAT IF? Would you expect the plastid DNA of...Ch. 28.3 - Prob. 3CCCh. 28.3 - Prob. 4CCCh. 28.4 - Contrast red algae and brown algae.
Ch. 28.4 - Why is it accurate to say that Ulva is truly...Ch. 28.4 - Prob. 3CCCh. 28.5 - Contrast the pseudopodia of amoebozoans and...Ch. 28.5 - Prob. 2CCCh. 28.5 - Prob. 3CCCh. 28.6 - Justify the claim that photosynthetic protists are...Ch. 28.6 - Prob. 2CCCh. 28.6 - WHAT IF? High water temperatures and pollution...Ch. 28.6 - MAKE CONNECTIONS The bacterium Wolbachia is a...Ch. 28 - Describe similarities and differences between...Ch. 28 - What evidence indicates that the excavates form a...Ch. 28 - Prob. 28.3CRCh. 28 - On what basis do systematists place plants in the...Ch. 28 - Describe a key feature for each of the main...Ch. 28 - Prob. 28.6CRCh. 28 - Plastids that are Surrounded by more than two...Ch. 28 - Biologists think that endosymbiosis gave rise to...Ch. 28 - Prob. 3TYUCh. 28 - According to the phylogeny presented in this...Ch. 28 - In a life cycle with alternation of generations,...Ch. 28 - Based on the phylogenetic tree in Figure 28.2,...Ch. 28 - Prob. 7TYUCh. 28 - SCIENTIFIC INQUIRY Applying the If then logic of...Ch. 28 - WRITE ABOUT A THEME: INTERACTIONS Organisms...Ch. 28 - SYNTHESIZE YOUR KNOWLEDGE This micrograph show's a...
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