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Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 20.2, Problem 2TC
Some of the enzymes that have important uses in molecular biology procedure are extracted from prokaryotes that live in hot springs. Can you guess why?
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You are tutoring a fellow student about the genomes of prokaryotes. You ask them to give you one important characteristic about the genomes of bacteria. Which of the following statement given by your student is correct?
-Bacterial cells can contain DNA called plasmids.
-The bacterial chromosome is not contained within a nucleus but, rather, is found at the nucleolus
-Bacterial genomes are diploid throughout most of the cell cycle.
-Bacterial genomes are composed of linear DNA.
-Bacterial cells have multiple chromosomes, "packed" with a relatively large amount of protein.
Using the question in the image below, identify the locations of each mutation in strains 1, 2, and 3
Would genetic engineering be possible if we did not know a great deal about the genetics of bacteria? Explain.
Chapter 20 Solutions
Biology
Ch. 20.1 - describe some differences between bacteria and...Ch. 20.1 - describe the typical sizes and shapes of...Ch. 20.2 - What might explain the observation that most...Ch. 20.2 - Unwelcome Dinner Guests A few of the bacteria that...Ch. 20.2 - Some of the enzymes that have important uses in...Ch. 20.2 - Unpleasant breath odors are caused mainly by...Ch. 20.2 - As part of a study on the relationship between...Ch. 20.2 - What is the main advantage of prokaryotic fission,...Ch. 20.2 - describe the range of environments inhabited by...Ch. 20.2 - describe adaptations that help protect prokaryotes...
Ch. 20.2 - explain how prokaryotes reproduce and exchange...Ch. 20.3 - If all of Earths nitrogen-fixing prokaryotes were...Ch. 20.3 - Unwelcome Dinner Guests Many of the bacteria...Ch. 20.3 - explain how prokaryotes affect animal and plant...Ch. 20.3 - explain prokaryotes role in nutrient recycling?Ch. 20.3 - describe how prokaryotes help clean up pollution?Ch. 20.3 - describe some of the pathogenic bacteria that...Ch. 20.4 - Why are viruses unable to replicate outside of a...Ch. 20.4 - Biotechnologists often use viruses to transfer...Ch. 20.4 - describe the structure and characteristics of...Ch. 20.4 - describe the effects they can have on host...Ch. 20.4 - Prob. 3CYLCh. 20.4 - Unwelcome Dinner Guests How do harmful bacteria...Ch. 20 - The name of the process by which DNA is...Ch. 20 - A community of prokaryotes surrounded by slime and...Ch. 20 - Which of the following statements about archaea is...Ch. 20 - Viruses a. are usually photosynthetic. b. consist...Ch. 20 - Applying fertilizer near an oil spill to Increase...Ch. 20 - ____________, have peptidoglycan in...Ch. 20 - Prokaryotic cells are ____________,...Ch. 20 - Many prokaryotes use ____________ to move about....Ch. 20 - ____________,bacteria inhabit environments that...Ch. 20 - Prokaryotes reproduce by ____________ and may...Ch. 20 - The plant nutrient ammonium is produced by...Ch. 20 - Cholera, gonorrhea, and pneumonia are some of the...Ch. 20 - A virus consists of a molecule of __________ or...Ch. 20 - Describe some of the ways in which prokaryotes...Ch. 20 - What are nitrogen-fixing bacteria, and what role...Ch. 20 - Describe some of the extreme environments in which...Ch. 20 - What is an endospore? What is its function?Ch. 20 - What is conjugation? What role do plasmids play in...Ch. 20 - Why are prokaryotes especially useful in...Ch. 20 - Describe the structure of a typical virus. How do...Ch. 20 - Describe some examples of how prokaryotes are...Ch. 20 - How do archaea and bacteria differ? How do...Ch. 20 - Prob. 1ACCh. 20 - Before the discovery of prions, many (perhaps...
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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
- Question 1) Imagine you’re making a yeast from scratch, and you’re worried your yeast may sometimes not have access to the amino acid methionine. You decide to put some genes in that code for proteins that allow it to make methionine, just in case your yeast happens upon circumstances where it can’t eat methionine. It seems wasteful to produce these proteins all the time though. Why? Question 2) In order to not waste a bunch of energy and materials making proteins to make methionine when the yeast doesn’t need to make methionine. You organize the DNA so that the genes are controlled by a promoter. Which promoter makes sense and why? i) lac promoter, turns on when lactose is present. ii) Pmet3 promoter, turns off when methionine is present. iii) pbr promoter, turns on when lead is present.arrow_forwardWhat is a genophore? A DNA in prokaryotes B DNA and RNA in prokaryotes C DNA and protein in prokaryotes D RNA in prokaryotesarrow_forwardYou don't need the internet to exchange "gene-mail" with your friends, you have your own way to share the latest genes for things like antibiotic resistance. a. What is the structure being described? b. What is the chemical composition of this structure? c. What is the function of the structure, and how does it benefit the bacteria? I'm not getting this riddle.arrow_forward
- Binary fission in bacteria is beneficial for all of the following reasons EXCEPT: Group of answer choices Mutation rates in prokaryotes are high due to short generation times Prokaryotes can copy themselves in as little as 20 minutes, resulting in rapid population growth Prokaryotes can undergo rapid evolution due to the high mutation rates The daughter cells that are produced are genetically identical to the parent cellarrow_forwardDue to climate change, food security is highly compromised. Sequentially explain recombinant DNA techniques you would use to isolate and transfer a heat resistant gene from a bacteria to help maize plants thrive in areas with water scarcity.arrow_forwardElectrostatics has an important role to play in modern molecular biology. Explain this statement.arrow_forward
- Genetically speaking, prokaryotes are different from eukaryotes because: a. prokaryotes usually have one main circular chromosome, whereas eukaryotes have multiple linear chromosomes prokaryotes do not usually have histone proteins to package their DNA prokaryotes do not have a nucleus to house their DNA as eukaryotes do prokaryotes have less total DNA than do eukaryotes All of the abovearrow_forwardWhat role do genes, RNA, and protein synthesis play in molecular microbiology?arrow_forwardWhy do you think all organisms use nucleic acids for encoding genetic information? Why not use proteins or carbohydrates? What advantages might DNA have as the source of genetic information?arrow_forward
- Model organisms are those widely used by researchers who wish to understand basic processes that are common to many species. Bacteria such as Escherichia coli are model organisms for modern geneticists. Give three reasons why bacteria would be useful in genetic experiments.arrow_forwardBeadle and Tatum's experiments led to the "one gene - one enzyme (protein)" hypothesis. In subsequent years, many exceptions to this hypothesis were noted. A molecule of hemoglobin fails to support this hypothesis for which of the following reasons? n eukaryotes, one gene can code form multiple isoforms of a polypeptide. The functional hemoglobin protein is made from multiple polypeptides. Not all enzymes are proteins. Not all genes encode proteins.arrow_forwardIdentify the single most correct answer: a) Ribosome is an organelle found in both prokaryotes and eukaryotes. Ob) During conjugation a naked DNA molecule found in the surroundings gets into bacteria. c) Spontaneous mutation cannot result in the production of an altered protein. Od) Gene transfer from one species of bacteria to another (donor to recipient) represents horizontal gene transfer.arrow_forward
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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license