BIOLOGY DUAL ENROLLMENT VERSION
12th Edition
ISBN: 9780136681311
Author: Urry
Publisher: PEARSON
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Chapter 27.1, Problem 3CC
Summary Introduction
To suggest: A hypothesis explaining the resemblance of thylakoid membranes of chloroplasts and cyanobacteria.
Concept introduction:
The prokaryotic cells are simple in structure and arrangement of DNA though some prokaryotic cells exhibit some specialized membranes such as thylakoid membranes to perform metabolic functions. In general, the thylakoid membranes of chloroplasts resemble to the thylakoid membranes present in cyanobacteria.
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Explain the ways that mitochondria resemble rickettsias andchloroplasts resemble cyanobacteria.
Could you please assist?
The image below shows a density gradient centrifugation carried out to separate a mixture of lysosomes, peroxisomes and mitochondria
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Which fraction would you take to obtain mitichondria, and why?
O Fraction 2 because mitochondria contain haemoglobin. giving them a reddish colour
O Fraction 3 because it is the most dense fraction
O It is impossible to decide without further testing
O Fraction 1 because it is the least dense fraction
O Fraction 2, because mitochondria contain haem, giving them a reddish colour
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Chapter 27 Solutions
BIOLOGY DUAL ENROLLMENT VERSION
Ch. 27.1 - Describe two adaptations that enable prokaryotes...Ch. 27.1 - Contrast the cellular and DNA structures of...Ch. 27.1 - Prob. 3CCCh. 27.2 - Although rare on a per gene basis, new mutations...Ch. 27.2 - Distinguish between the three mechanisms by which...Ch. 27.2 - In a rapidly changing environment, which bacterial...Ch. 27.3 - Distinguish between the four major modes of...Ch. 27.3 - A bacterium requires only the amino acid...Ch. 27.3 - WHAT IF? Describe what you might eat for a...Ch. 27.4 - Explain how molecular systematics and metagenomics...
Ch. 27.4 - Prob. 2CCCh. 27.5 - Explain how prokaryotes, though small, can be...Ch. 27.5 - MAKE CONNECTIONS Review Figure 10.6. Then...Ch. 27.6 - Identify at least two ways that prokaryotes have...Ch. 27.6 - Prob. 2CCCh. 27.6 - Prob. 3CCCh. 27 - Describe features of prokaryotes that enable them...Ch. 27 - Mutations are rare and prokaryotes reproduce...Ch. 27 - Describe the range of prokaryotic metabolic...Ch. 27 - How have molecular data informed prokaryotic...Ch. 27 - In what ways are prokaryotes key to the survivaI...Ch. 27 - Prob. 27.6CRCh. 27 - Genetic variation in bacterial populations cannot...Ch. 27 - Photoautotrophs use (A) light as an energy source...Ch. 27 - Which of the following statements is not true? (A)...Ch. 27 - Prob. 4TYUCh. 27 - Prob. 5TYUCh. 27 - Prob. 6TYUCh. 27 - Prob. 7TYUCh. 27 - SCIENTIFIC INQUIRY INTERPRET THE DATA The...Ch. 27 - WRITE ABOUT A THEME: ENERGY In a short essay...Ch. 27 - SYNTHESIZE YOUR KNOWLEDGE Explain how the small...
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- What is the correct answer herearrow_forwardHow can the hypothesis that asserts that chloroplasts as well as mitochondria were primitive prokaryotes that associated in mutualism with primitive anaerobic eukaryotic cells be corroborated?arrow_forward1. Why was the great oxygenation event important for mitochondrial development? a) In your own words, define symbiotic. 2. Chloroplasts and mitochondria both contain a circular DNA chromosome, and ribosomes. Why does this evidence support the theory of endosymbiosis as the mechanism for the origin of eukaryotic cells? a) Today, could mitochondria live independently of their eukaryotic cell host? Give two pieces of evidence to support your answer.arrow_forward
- Vhich structure is unique to the chloroplast? a) Inner membrane b) outer membrane c) Thylakoid, d) fluid filled space O e) DNAarrow_forward1) Discuss several characteristics of mitochondria and chloroplasts that lend evidence to the endosymbiotic theory. As stated in the text, this theory may explain the origin of these organelles. Can this theory explain the origin of the ER?arrow_forwardWhat is a trichome?arrow_forward
- Using the data provided 6. Which carbohydrate (fuel) did yeast use fastest (i.e. most gas produced? B. Was this result what you expected yes/no? C. Why do you think yeast used this carbohydrate (fuel) fastest? Hint: Think about a) The structures of the carbohydrates in the process of cell respiration, and/or b) what kinds of molecules cells need to break down these carbohydrates.arrow_forward1) Dichlorophenyldimethylurea inhibits photosynthesis by blocking electron transfer between the plastoquinone in photosystem II. a) Would you expect this to interfere with cyclic photophosphorylation? b) This herbicide normally stops O2 evolution, but if we add ferricyanide to the chloroplasts, O2 evolution continues. Why might this be the case?arrow_forwardWhich of the following is NOT true about the structure of chloroplasts? A) The thlakoid membranes are continuous with the intermembrane space B) The network of thylakoids within a chloroplast are one continuous space C)Thylakoids of the chloroplast developed due to the invagination of the inner plastid membrane D) All of these are true about chloroplast structure. E) Chloroplasts are considerably larger than mitochondriaarrow_forward
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