The cell walls of Gram-negative bactena such as E. coli have a structure characterized by:
Q: What terms would describe a prokaryote that has is covered in a thick peptidoglycan layer, gets its…
A: Prokaryotes are typically unicellular microscopic organisms which lack a distinct nuclear membrane…
Q: In Gram-positive bacteria, peptidoglycan cross-link is formed by a peptide bond from the amino group…
A: Gram positive bacteria have a thick cell wall due to the peptidoglycan layer which can be identified…
Q: The bacterium Thiomargarita namibiensis—at about 0.1 to 0.3 mm in diameter—is visible to the human…
A: Thiomargarita namibiensis is prokaryotic bacteria which is found in an extreme habitat where…
Q: What are the peptidoglycans in the Gram Positive bacterial cell wall made up of?
A: Peptidoglycan is a component of cell wall of gram-positive and gram-negative bacteria. The polymers…
Q: The average bacterium is approximately __ µm in diameter and a typical Eukaryotic nucleus is…
A: The cell is the structural and functional unit of life. The first non-living cell from the cork was…
Q: Identify each of the structures on a diagram of the prokaryotic cell, and explain the function.…
A: Prokaryotic are primitive and simple cells like bacteria which are usually unicellular, have no…
Q: Which of the following is NOT a structure involved in the movement of bacteria? Cilia Sex Pilus…
A: Bacterial diseases are bacteria-caused ailments. The human body contains a variety of microbes. Some…
Q: Periplasmic flagella is an internal flagellum found in bacteria called Spirochetes, a…
A: A spirochete is a member of the the phylum Spirochaetes. This phylum contains distinctive diderm…
Q: Which of the following statements is true? Select one: O a. Gram-positive bacterial walls have a…
A: Answer: PEPTIDOGLYCAN : It is a amphipathic component which acts as a lipid anchor , embedding…
Q: Which of the following is NOT true about bacterial endospores? A. They are produced by bacteria…
A: The process of formation of endospore is called Sporulation. It is formed in some selected species…
Q: mycobacterium tuberculosis Can it form endospores? If yes, explain when they form endospores
A: Endospore It refers to the dormant, tough and the non-reproductive structure created by some…
Q: Question: Give at least 5 Genus and Species under G(+) cocci and G(+) bacilli
A: Solution : Gram-positive cocci include Staphylococcus (catalase-positive), which grows clusters, and…
Q: A highly conserved endotoxin of gram negative bacteria is? Lipid A adhesin protease…
A: Gram negative bacteria has highly conserved endotoxin on its outer layers.
Q: Archaea with cell walls consisting of a thick, homogeneous layer of complex polysaccharides often…
A: Prokaryotes are the single celled organisms (unicellular) and are the simplest form, which do not…
Q: Which of the following statement/s is/are true about gram positive bacteria Cell wall has thick…
A: On the basis of the structure, bacteria can be classified into two main types when they are gram…
Q: When Gram-negative bacteria treated with lysozymes, no protoplasts are liberated like in…
A: Bacteria are prokaryotic organisms. They lack a true nucleus, that is their genetic component…
Q: Gram-negative bacteria are generally more resistant to antibiotics than Gram-positive bacteria. What…
A: Gram positive and gram negative bacteria has some structures in common whereas some structure differ…
Q: Which is NOT a component of a Gram-positive bacterium's cell envelope? ○ peptidoglycan ○…
A: Bacteria are classified according to their nature of cell wall into Gram positive and Gram negative…
Q: What is the difference between cell membrane, cell wall and outer membrane (for Gram negatives)?
A: The cell membrane has two functions: firstly, to be a shield that holds the cell's constituents in…
Q: All of the following are characteristics of the bacterial flagellum except: Select one: a. It has a…
A: c. It is used in conjugation NO PILI ARE USED
Q: A bacterium has the following characteristics: ∙ It adheres to the human intestinal lining using a…
A: Bacteria are prokaryotes, lacking well-defined nuclei and membrane-bound organelles, and with…
Q: All of the following structures are present in ALL bacterial cells, EXCEPT: Capsule Ribosomes…
A: Introduction Bacteria are single-celled organisms with a small size. Bacteria can be found nearly…
Q: The common word for bacteria which are helically curved rods is
A: There are five groups of bacteria which are classified based on shapes - 1. Cocci - They are…
Q: What is the importance of simple diffusion and osmosis processes for a free-living protozoan microbe…
A: Simple diffusion is the movement of substances from higher concentration to lower concentration in…
Q: MacConkey agar is often used to differentiate E. coli from other Gram-negative rods. The recipe for…
A: MacConkey agar is a selective and differentiative medium that was developed by Alfred Theodore…
Q: In 1985, a 0.5-mm cell was discovered in surgeonfish and named Epulopiscium fishelsoni. It was…
A: Introduction Protozoa are single-celled organisms, either free-living or parasitic, that feed on…
Q: Why is the rigid layer of the bacterial cell wall calledpeptidoglycan?
A: Bacteria are the most important microorganisms to the food processor. Some bacteria are beneficial…
Q: The three types of external bacterial appearances are _____________, _____________, and…
A: Bacterial are unicellular prokaryotes which can be photosynthetic or chemosynthetic for nutrition.…
Q: Which of the following statement about 3 bacterial cell wall is incorrect Peptidoglycan…
A: Bacteria are microscopic, single-celled organisms that practically exists in all types of…
Q: In Gram-positive bacteria, peptidoglycan cross-link is formed by a peptide bond from the amino group…
A: In gram positive bacteria Peptidoglycan carries covalently attached cell surface components like…
Q: The anerobic Clostridium spp. and aerobic Bacillus spp. Are gram positive rods and endospore forming…
A: Bacteria are unicellular, prokaryotic organisms which are devoid of membrane bound organelles and…
Q: Gram Stain Gram Reaction (Gram- positive or Gram- negative): Cellular morphology (shape &…
A: Bacteria are unicellular and prokaryotic organisms that live in a wide variety of environments. It…
Q: Which of the following organisms possess a cell wall? Cactus Gram-positive Bacteria Animals…
A: Cell wall is the rigid layer or structure outside the plasma membrane.
Q: This bacterial component is found in the outer leaflet of the outer membrane of gram-negative…
A: Gram-negative bacteria are known to be involved in the etiology of severe sepsis and septic shock on…
Q: "a long, thin cellular appendage present in many Archaea that rotates and is responsible for…
A: Step 1 Archaea are the most ancient and heterogeneous group of bacteria that originated from…
Q: Compare and contrast the two Spore-Forming Gram-Positive Bacilli, Bacillus and Clostridium. Use venn…
A: The two spore forming gram positive bacilli. The bacilli that produce gram-positive spore are the…
Q: Which of the following is typically found in aquatic bacteria, especially among phototrophic types,…
A: Phototrophic bacteria: Phototrophic bacteria obtain energy for their development and survival from…
Q: Define the following terms:a. prokaryoteb. eukaryotec. organelled. hydrophilice. hydrophobic
A: The cell is the biological unit of life which give a structure support and facilitate growth through…
Q: Gram-negative bacteria are surrounded by two membrane bilayers separated by a space termed the…
A: Answer : The amino acid that would be affected by the oxidising environment is cysteine and…
Q: Mycoplasmas are bacteria that lack cell walls. On the basis of this structural feature, which…
A: Mycoplasma is a genus of bacteria lacking a cell wall around their cell membranes. This function…
Q: Which of the following is true of bacterial endospores? They occur in most species of Gram-negative…
A: Bacteria are divided into Gram positive and Gram negative on the basis of their cell wall structure.…
Q: What is the shape of the following cells? spirochete cocci spirillum…
A: INTRODUCTION The shape of the bacteria in the picture is given below.
Q: List the major molecules that make up typical Gram-positive and Gram-negative cell walls and note…
A: Bacteria are the microorganisms that have cell wall and are unicellular. The cell type is…
Q: Which of the following is NOT a characteristic for bacteria in general? Plasma membrane has no…
A: The bacteria are prokaryotic organisms that are unicellular in nature and contain primitive nucleus…
Q: How does the shape of a bacteria cell affect the bacteria’s survival in the environment? To answer…
A: Note: As Per Bartleby Guidelines , For Further Answers Please Repost The Question. Introduction:…
Q: TRUE or FALSE E. coli would have a pink mucoid colonies
A: A differential medium is a culture medium that is capable of differentiating two types of bacteria…
Q: Which of the following are TRUE of yeast? Yeast are Gram-positive cells.Yeast are Gram-positive…
A: Yeast comes under kingdom fungi , it is eukaryotic , unicellular organism, it's cell wall is made up…
Q: Which among statements A-D is not applicable to endospore formation?
A: Endospore is a highly resistant non-reproductive structure developed by gram positive bacteria…
Q: What are the structural reasons for therigidity that is conferred on the cell wall by the…
A: Cell wall is a structural layer that forms a surrounding membrane in some kind of cells. It is found…
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- In a lipid bilayer, the of all the lipid molecules are sandwiched between all of the __________. a. hydrophilic tails; hydrophobic heads b. hydrophilic heads; hydrophilic tails c. hydrophobic tails; hydrophilic heads d. hydrophobic heads; hydrophilic tailsWhich of these amino acids is NOT a common attachment point for sugars in glycoproteins? A) Gly b) Ser c) Thr d) Asn In I-cell disease defective proteins are mislabeled which should be delivered to which organelle? A) nucleus b) mitochondria c) rough endoplasmic reticulum d) lysosome A glycoprotein involved in red blood cell production is: a) hemagglutinin b) erythropoietin c) p-glycoprotein d) cytochrome cIn a typical eukaryotic plasma membrane, _____.A. lipids can move and diffuse through the bilayerB. oligosaccharides face outward, not toward the cytosolC. proteins can move in and out of the bilayerD. all of the above
- Cells with membrane ethers also may have (Select all that apply): Group of answer choices 1. 80S ribosomes 2. peptidoglycan 3. phytanyl 4. monolayers 5. pseudomureinWhich of the following is not a lipid link that anchors membrane-associated proteins to the bilayer? Thioether-linked prenyl anchors. Ester-linked triacylglycerol anchors. Glycosyl phosphatidylinositol anchors. Thioester-linked fatty acyl anchors. Amide-linked myristoyl anchors.The predatory bacterium Bdellovibrio bacteriovorus is able to penetrate a gram-negative bacterium that has a slimy cell covering. What is the correct sequence of structures penetrated by B. bacteriovorus on its way to the prey's cytoplasm? Group of answer choices A. phospholipid membrane, capsule, peptidoglycan, lipopolysaccharide membrane B. lipopolysaccharide membrane, peptidoglycan, capsule, phospholipid membrane C. lipopolysaccharide membrane, capsule, peptidoglycan, phospholipid membrane D. capsule, lipopolysaccharide membrane, peptidoglycan, phospholipid membrane
- The cell walls of most members of the phyla Firmicutes and Actinobacteria lack porins. Why is this the case?When viewed by electron microscopy, the lipid bilayer is often described as looking like a railroad track. Explain how the structure of the bilayer creates this image.glycocalyx is a. is com,posed of proteins ;linked to the membrane lipids and carbohydrates b. is composed of carbohydrates linked to the membrane lipids and proteins c. runs through the cytosol d. all of the above
- ribosomes make proteins. Ture or falseWhich of the following statements best describes the synthesis of secreted proteins? a.) Secreted proteins are typically synthesized in the smooth endoplasmic reticulum and carried to the Golgi apparatus in vesicles. b.) Secreted proteins are typically synthesized in the rough endoplasmic reticulum and carried to the Golgi apparatus in vesicles. c.) Secreted proteins are typically synthesized in the Golgi apparatus. d.) Secreted proteins are typically synthesized in the cytoplasm and diffuse to the Golgi apparatus.Choose all that aplly that are TRUE for the lipid bilayer:Negative mark is given to incorrect answer(s). a. The polar head groups of the bilayer are positively charged. b. Individual lipid molecules in one face (monolayer) of the bilayer cannot diffuse (flip-flop) to the other monolayer and must be catalyzed by a lipid transporter called flippase. c. The bilayer is stabilized by covalent bonds between neighbouring phospholipid molecules. d. Polar, but uncharged, compounds readily diffuse across the bilayer. e. Individual lipid molecules are free to diffuse laterally on the surface of the bilayer.