Biology 2e
2nd Edition
ISBN: 9781947172517
Author: Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher: OpenStax
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Textbook Question
Chapter 22, Problem 22RQ
Which of the statements about biofilms is incorrect?
- Biofilms are considered responsible for diseases such as cystic fibrosis
- Biofilms produce dental plaque, and colonize catheters and prostheses
- Biofilms colonize open wounds and burned tissue
- All statements are incorrect.
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Which of the following is not true about biofilms
a) are caused by many Gram positive and Gram negative bacteria as well as algae and fungi
b) are highly contagious
c) are hard to treat due to impermeability to drugs
Which of the following characterize biofilms that form within the body? (Check all that apply.)
Group of answer choices
Biofilms help microorganism adhere to human tissue.
Biofilms are formed only by Gram-positive bacteria.
Biofilms protect microbes from the body’s defenses.
Biofilms protect microorganisms from antibiotics.
Biofilms are usually made up of only one species of bacteria.
Which of the following is true of microbial biofilms?
A.
Biofilms are restricted to freshwater environments.
B.
Biofilms typically are small because resources such as nutrients and oxygen are unable to circulate through them.
C.
Cells within the biofilm are encased within a layer of polysaccharide.
D.
Biofilms almost always consist of only a single bacterial species
Chapter 22 Solutions
Biology 2e
Ch. 22 - Figure 22.8 Compared to free-floating bacteria,...Ch. 22 - Figure 22.16 Which of the following statements is...Ch. 22 - Figure 22.19 Which of the following statements...Ch. 22 - The first forms of life on Earth were thought to...Ch. 22 - Microbial mats. are the earliest forms of life on...Ch. 22 - The first organisms that oxygenated the atmosphere...Ch. 22 - Halophiles are organisms that require a salt...Ch. 22 - Many of the first prokaryotes to be cultured in a...Ch. 22 - The presence of a membrane-enclosed nucleus is a...Ch. 22 - Which of the following consist of prokaryotic...
Ch. 22 - The cell wall is ___________ . interior to the...Ch. 22 - Organisms most likely to be found in extreme...Ch. 22 - Prokaryotes stain as Gram-positive or Gramnegative...Ch. 22 - Pseudopeptidoglycan is a characteristic of the...Ch. 22 - The lipopolysaccharide layer (LPS) is a...Ch. 22 - Which of the following elements is not a...Ch. 22 - Prokaryotes that obtain their energy from chemical...Ch. 22 - Ammonification is the process by which. ammonia is...Ch. 22 - Plants use carbon dioxide from the air and are...Ch. 22 - Cyanobacteria harness energy from the sun through...Ch. 22 - A disease that is constantly present in a...Ch. 22 - Which of the statements about biofilms is...Ch. 22 - Which of these statements is true? An antibiotic...Ch. 22 - A person in England arrives at a medical clinic...Ch. 22 - MRSA has emerged as a serious infectious disease,...Ch. 22 - Which of these occurs through symbiotic nitrogen...Ch. 22 - Synthetic compounds found in an organism but not...Ch. 22 - Bioremediation includes. the use of prokaryotes...Ch. 22 - In addition to providing yogurt with its unique...Ch. 22 - Describe briefly how you would detect the presence...Ch. 22 - Why do scientists believe that the first organisms...Ch. 22 - A new bacterial species is discovered and...Ch. 22 - Mention three differences between bacteria and...Ch. 22 - Explain the statement that both types, bacteria...Ch. 22 - A scientist isolates a new species of prokaryote...Ch. 22 - Think about the conditions (temperature, light,...Ch. 22 - Farmers continually rotate the crops grown in...Ch. 22 - Imagine a region of soil became contaminated,...Ch. 22 - Explain the reason why the imprudent and excessive...Ch. 22 - Researchers have discovered that washing spinach...Ch. 22 - Your friend believes that prokaryotes are always...Ch. 22 - Many people use antimicrobial soap to kill...
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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
- What is a biofilm? Give an example of a biofilm that is beneficial to humans and one that is harmful.arrow_forwardFill in the blank: Some bacteria can form _________________ to withstand unfavorable conditions in the environmentarrow_forwardA type of cell wall that is often toxic. Question options: a) gram-positive b) gram-negative c) acid-fast d) mycoplasmaarrow_forward
- Fill in the blank: The cell wall of bacteria is made-up of the polysaccharide ______________________. Gram negative bacteria have ____________________ cell wall than Gram positive bacteria.arrow_forwardProvide some information regarding biofilms that you read about in your textbook, on the internet (use a valid resource site), or any other source that you found related to biofilms in general. This can include characteristics, types of organisms that may be present, locations, what type of outcome they can lead to, etc. This particular topic has a lot of information overall, so write about something you find interesting!arrow_forwardList three (3) advantages microbes have when living in a biofilm, as compared to planktonic growth. Then explain how each biofilm advantage impacts human health.arrow_forward
- When food leftovers are stored in a refrigerator, how does this help prevent food borne illnesses? Group of answer choices Low temperatures deactivate any toxins that might be produced by microbes. Low temperatures inhibit the metabolism and growth of microbes. Low temperatures disrupt microbe membranes and kill any microbes that are present. Low temperatures prevent microbes from forming biofilms.arrow_forwardIf a kitchen washcloth harbors microbes that can be transmitted to an individual to cause disease, then the washcloth is considered a pathogen. a biofilm. a fomite. an endospore. a virus.arrow_forwarda microbe that decomposes the organic remains of dead organisms. (decomposers is wrong. i don't know why)arrow_forward
- Bacteria can best survive low pH and dryness by producing ____________. Group of answer choices Endospores Capsules Endotoxin Cytotoxinsarrow_forwardWhat does biofilms look like add images Biofilmsarrow_forwarddo a bit of research to find a microbe that also has odd growth requirements (i.e. it can break down odd substances in order to meet its nutritional needs). Tell us what the microbe uses, how it accesses these nutrients (special enzymes, does it get help from other organisms, etc), as well as the potential utility of microbe to aid in Earth or human health.arrow_forward
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