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 2VCQ
Figure 22.16 Which of the following statements is true?
- Gram-positive bacteria have a single cell wall anchored to the cell membrane by lipoteichoic acid.
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Students have asked these similar questions
Which of the following correctly describes one difference between gram-positive
bacterial cells and gram-negative bacterial cells?
Gram-positive bacteria have less peptidoglycan
Gram-positive bacteria can all form endospores
Gram-positive bacteria have a thicker cell membrane
Gram-positive bacteria have more peptidoglycan
Which of the following statement about 3 bacterial cell wall is incorrect
Peptidoglycan consists of long polysaccharide chainscross-linked with amino acids.
The cell wall establishes a bacterium as a coccus, bacillus, or spirillum.
The cell wall is relatively nonpermeable and restricts the passage of sugars and amino acids.
Gram- negative cells have a membrane both inside andoutside their cell walls.
Gram-positive cells have more peptidoglycan in their cell walls gram-negative cells
Which of the following is not true about a gram-positive cell wall?
It has plasma membrane inside cell wall
It contains lipopolysaccharides (LPS)
It maintains the shape of the cell
It contains teichoic acids
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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- Figure 13.6 Which of the following statements is true? a. Gram-positive bacteria have a single cell wall formed from peptidoglycan. b. Gram-positive bacteria have an outer membrane. c. The cell wall of Gram-negative bacteria is thick, and the cell wall of Gram-positive bacteria is thin. d. Gram-negative bacteria have a cell wall made of peptidoglycan, while Gram-positive bacteria have a cell wall made of phospholipids.arrow_forwardWhich of the following correctly describes one difference between gram-negative bacterial cells and gram-positive bacterial cells? Gram-negative bacteria have more flagella Gram-negative bacteria all have capsules Gram-negative bacteria have an outer lipopolysaccharide layer Gram-negative bacteria are smaller than gram- positive bacteriaarrow_forwardOne major difference in the envelope structure between gram positive bacteria and gram-negative bacteria is the presence or absence of a cytoplasmic membrane. True or false?arrow_forward
- Mycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, which statement concerning mycoplasmas should be true? They are gram-negative. They are subject to lysis in hypotonic conditions. They lack a cell membrane as well. They should contain less cellulose than do bacteria that possess cell walls. They possess typical prokaryotic flagella.arrow_forwardWhich is NOT a component of a Gram-positive bacterium's cell envelope? ○ peptidoglycan ○ N-acetylmuramic acid ○ lipopolysaccharide ○ teichoic acidarrow_forwardYou conduct a gram stain on a bacterial culture. After counterstaining with safranin, cells are purple. What statements are true about the bacterial cells? (Choose all that are true.) Group of answer choices The cell wall of these cells helps to maintain cell shape and protect the cell from osmotic lysis. The cells have teichoic acids that have many important functions in gram positive bacteria Cells have a periplasmic space and a thin layer of peptidoglycan. The cells produce endotoxin (LPS) and may cause septic shock in an infected individual.arrow_forward
- Which of the following is TRUE regarding Gram negative bacteria? a- Their cell wall is composed of a large proportion of sugars b- Their cell wall does not absorb the Gram stain and turns pink c- Their cell wall is composed of a small proportion of peptidoglycan d- Two of the above statements are truearrow_forwardWhich of the following is not a function of the plasma membrane in bacteria: Attachment to hosts Production of energy Breakdown of nutrients Selective permiability.arrow_forwardWhat terms would describe a prokaryote that is covered thin peptidoglycan layer between two membranes, harnesses energy from the sun, and needs oxygen to survive? Aerobic Anaerobic Autotroph Heterotroph Extremophile Gram-positive Gram-negativarrow_forward
- What terms would describe a prokaryote that has is covered in a thick peptidoglycan layer, gets its energy from eating other prokaryotes, and does not need oxygen to survive? Aerobic Anaerobic Autotroph Heterotroph Extremophile Gram-positive Gram-negativearrow_forwardI am doing my microbiology homework and I need help with these questions: 1) List the structures ALL bacteria possess. 2) Identify three structures SOME but not all bacteria possess. 5) Describe the structure and function of three different structures found outside of the bacterial cytoplasmic membrane. 6) Differentiate between the two main types of bacterial envelope structures. 7) Why are Gram-positive cell walls stronger than Gram-negative cell walls? 8) Name a substance in the envelope of SOME bacteria that can cause severe symptoms in humans. 9) Describe the causes of sporogenesis and germination 10) Compare and contrast the major features of archaea, bacteria and eukaryotes by completing the table below. Characteristic Bacteria Archaea Eukarya Chromosome Type of Ribosomes Protein Synthesis Similar to Eukarya Sterols In Membrane Membrane-bound Organelles Peptidoglycan in Cell wallarrow_forwardWhich of the following would be most likely to help a microbe survive human stomach acid to cause an infection in the intestines? O Peptidoglycan cell walls Endospores Capsules Piliarrow_forward
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