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Gram Stain Lab Answers
... stain red or pink because this now porous peptidoglycan layer is sandwiched between an inner cell membrane and a more complex outer cell wall. 3. In what type(s) of organisms would the Gram stain not work? Why? - organisms that DON’T have a cell wall - Ex: viruses, animal cells, some species of arch ...
... stain red or pink because this now porous peptidoglycan layer is sandwiched between an inner cell membrane and a more complex outer cell wall. 3. In what type(s) of organisms would the Gram stain not work? Why? - organisms that DON’T have a cell wall - Ex: viruses, animal cells, some species of arch ...
Module 5
... more than one domain. A domain is defined as sequentially consecutive residues in a protein that can fold up independently of other parts of the protein. Crystallographers commonly refer to domains as folds and the term module is also sometimes used. Some people would go as far as saying that the do ...
... more than one domain. A domain is defined as sequentially consecutive residues in a protein that can fold up independently of other parts of the protein. Crystallographers commonly refer to domains as folds and the term module is also sometimes used. Some people would go as far as saying that the do ...
LS1a Fall 09
... Ribosomes (large and small subunits, rRNA and ribosomal proteins) Charged tRNAs representing all 20 amino acids (or all 20 tRNAs, all 20 amino acids, and all of the amino-acyl tRNA synthetases, along with ATP) EF-Tu, EF-G, and GTP [Unexpected, but possible answer: Release factors that recogn ...
... Ribosomes (large and small subunits, rRNA and ribosomal proteins) Charged tRNAs representing all 20 amino acids (or all 20 tRNAs, all 20 amino acids, and all of the amino-acyl tRNA synthetases, along with ATP) EF-Tu, EF-G, and GTP [Unexpected, but possible answer: Release factors that recogn ...
Tortora-4 Chapter 4 – Functional Anatomy of Prokaryotic and
... and inner membranes. c. Gram-negative bacteria do not contain teichoic acids. d. The outer membrane contains a number of modified proteins and lipids, especially lipopolysaccharides, which can be toxic. Cell Walls and the Gram Stain Reaction Atypical Cell Walls ...
... and inner membranes. c. Gram-negative bacteria do not contain teichoic acids. d. The outer membrane contains a number of modified proteins and lipids, especially lipopolysaccharides, which can be toxic. Cell Walls and the Gram Stain Reaction Atypical Cell Walls ...
Expression of the transcription factor, TFII-I, in post
... Structurally, the TFII-I protein comprises several domains that define its biological function: an N-terminal leucine zipper domain is followed by six I-repeats (R1-R6), each containing a helix-loop-helix (HLH) domain. Leucine zipper is involved in dimerization, whereas sequence between the first an ...
... Structurally, the TFII-I protein comprises several domains that define its biological function: an N-terminal leucine zipper domain is followed by six I-repeats (R1-R6), each containing a helix-loop-helix (HLH) domain. Leucine zipper is involved in dimerization, whereas sequence between the first an ...
Prokaryote Structure A prokaryote is a unicellular organism
... Prokaryote Structure A prokaryote is a unicellular organism that lacks a nucleus. Most prokaryotes have a cell wall, a cell membrane, and cytoplasm. The bacterium below is one example of a prokaryote. Follow the prompts to locate structures in a typical bacterium. • Color the cell membrane yellow. • ...
... Prokaryote Structure A prokaryote is a unicellular organism that lacks a nucleus. Most prokaryotes have a cell wall, a cell membrane, and cytoplasm. The bacterium below is one example of a prokaryote. Follow the prompts to locate structures in a typical bacterium. • Color the cell membrane yellow. • ...
Domains of Life Quiz Answer Key
... 9. Which of the following absorb their nutrients from other organisms? a) a maple tree b) a Portobello mushroom c) a blue whale d) all of the above ...
... 9. Which of the following absorb their nutrients from other organisms? a) a maple tree b) a Portobello mushroom c) a blue whale d) all of the above ...
The bacterial cell envelope - Philosophical Transactions of the
... endeavoured to capture all that is novel and innovative in bacterial cell envelope biology, inevitably some areas are absent for which the editors apologize. There is only so much you can do (or indeed beg for). In general, the bacterial cell envelope comes in two types: that of Gramnegative bacteri ...
... endeavoured to capture all that is novel and innovative in bacterial cell envelope biology, inevitably some areas are absent for which the editors apologize. There is only so much you can do (or indeed beg for). In general, the bacterial cell envelope comes in two types: that of Gramnegative bacteri ...
Prokaryotes and the origins of Metabolic Diversity
... Gram stain is used to distinguish two groups of eubacteria by structural differences in their cell walls. Gram-positive eubacteria. – Cell walls with large amounts of peptidoglycan that react with Crystal Violet stain ...
... Gram stain is used to distinguish two groups of eubacteria by structural differences in their cell walls. Gram-positive eubacteria. – Cell walls with large amounts of peptidoglycan that react with Crystal Violet stain ...
Ch. 15.4
... 1. Two worms in the same class must also be grouped in the same: a. Order c. Family b. Genus d. Phylu 2. A genus is composed of a number or related: a. Kingdoms c. Orders b. Phyla d. Species 3. What does a cladistic analysis show about organisms? a. The relative importance of each derived character ...
... 1. Two worms in the same class must also be grouped in the same: a. Order c. Family b. Genus d. Phylu 2. A genus is composed of a number or related: a. Kingdoms c. Orders b. Phyla d. Species 3. What does a cladistic analysis show about organisms? a. The relative importance of each derived character ...
Quiz #4 1. Which of the following statements is
... d. All of the above are true. Answer a. is false because a correct statement would have read as follows: Vesicle containing proteins targeted for extracellular secretion are said to be undergoing exocytosis. 5. You have a peptide (MW 1,000 g/mol) and the full length protein (MW 50,000 g/mol) from wh ...
... d. All of the above are true. Answer a. is false because a correct statement would have read as follows: Vesicle containing proteins targeted for extracellular secretion are said to be undergoing exocytosis. 5. You have a peptide (MW 1,000 g/mol) and the full length protein (MW 50,000 g/mol) from wh ...
Document
... gramicidin analogs, [Val1]gramicidin A (gA) and [4,4,4-F3Val1]gramicidin A (F3gA), form dimeric channels that are structurally equivalent and have characteristically different conductances. When these gramicidins were added asymmetrically, one to each side of a preformed bilayer, the predominant cha ...
... gramicidin analogs, [Val1]gramicidin A (gA) and [4,4,4-F3Val1]gramicidin A (F3gA), form dimeric channels that are structurally equivalent and have characteristically different conductances. When these gramicidins were added asymmetrically, one to each side of a preformed bilayer, the predominant cha ...
Plasma membrane
... Lipid rafts (~70 nm dia) are typically rich in sphingolipids & cholesterol. The thicker membrane in the raft can accommodate some of the larger transmembrane proteins, so they tend to accumulate in LR. ...
... Lipid rafts (~70 nm dia) are typically rich in sphingolipids & cholesterol. The thicker membrane in the raft can accommodate some of the larger transmembrane proteins, so they tend to accumulate in LR. ...
Plasma membrane acts as a selective barrier allowing nutrients to
... conditions such as freezing temperatures, where should the DNA be located? The nucleoid region, endospore, and/or plasmids. ...
... conditions such as freezing temperatures, where should the DNA be located? The nucleoid region, endospore, and/or plasmids. ...
Module 5
... (or motifs) common to homologous proteins. These motifs, usually of the order of 10-20 amino acids in length, usually correspond to key functional or structural elements, often domains, and are extremely useful in identifying such features in new uncharacterized proteins. There is a number of such s ...
... (or motifs) common to homologous proteins. These motifs, usually of the order of 10-20 amino acids in length, usually correspond to key functional or structural elements, often domains, and are extremely useful in identifying such features in new uncharacterized proteins. There is a number of such s ...
Bacterial morphology, metabolism and growth
... • Different from flagella: smaller in diameter and not coiled in structure. • Promote adherence to other bacteria or to th host (adhesins, lectins, evasins, aggresins) ...
... • Different from flagella: smaller in diameter and not coiled in structure. • Promote adherence to other bacteria or to th host (adhesins, lectins, evasins, aggresins) ...
Substrate targeting mechanisms
... -100 amino acid module consists of a central b-sheet of (4 to 6 b-strands) and two a-helices -binding site lies across the sheet structure flanked by the two helices -recognizes phospho-tyrosine containing motifs (reads out sequence Yxxx after phospho-tyrosine) - SH2 domains bind the phosphotyrosine ...
... -100 amino acid module consists of a central b-sheet of (4 to 6 b-strands) and two a-helices -binding site lies across the sheet structure flanked by the two helices -recognizes phospho-tyrosine containing motifs (reads out sequence Yxxx after phospho-tyrosine) - SH2 domains bind the phosphotyrosine ...
Reading Guide for Week 3
... Reading Guide for Week 3 – Bio260 Colleen Sheridan Stage 02 – Colonization and Infection Unfortunately, some bacteria managed to make it into our host’s body before we were able to take steps to reduce disease transmission. In this unit you will be trying to figure out how bacteria adhere to the hos ...
... Reading Guide for Week 3 – Bio260 Colleen Sheridan Stage 02 – Colonization and Infection Unfortunately, some bacteria managed to make it into our host’s body before we were able to take steps to reduce disease transmission. In this unit you will be trying to figure out how bacteria adhere to the hos ...
The WHy domain mediates the response to
... both expressed during the plant response to external stresses indicates a common molecular mechanism, involving the activation of similar proteins. Interestingly, the domain is also found in bacteria and archaea, which suggests a possible similar pathway for the stress response, maybe acquired by ho ...
... both expressed during the plant response to external stresses indicates a common molecular mechanism, involving the activation of similar proteins. Interestingly, the domain is also found in bacteria and archaea, which suggests a possible similar pathway for the stress response, maybe acquired by ho ...
Fill in the table with the characteristics and roles/examples for each
... b. similar rRNA sequences. c. the presence of peptidoglycan in the cell wall. d. similar RNA polymerase. e. lack of sensitivity to some antibiotics. 8. Which one of the following statements about prokaryotes is false? a. Some aerobic prokaryotes have infoldings of their plasma membrane that function ...
... b. similar rRNA sequences. c. the presence of peptidoglycan in the cell wall. d. similar RNA polymerase. e. lack of sensitivity to some antibiotics. 8. Which one of the following statements about prokaryotes is false? a. Some aerobic prokaryotes have infoldings of their plasma membrane that function ...
BioMi -1 WHICH STATEMENT IS NOT TRUE AS A GENERAL RULE
... C) have filaments that are commonly called appendages. D) do not exist. MORPHOLOGY IS A TERM THAT REFERS TO THE __________ OF AN ORGANISM. A) size B) shape C) appendages D) attachment sites PROKARYOTES STAIN AS GRAM-POSITIVE OR GRAM-NEGATIVE BECAUSE OF DIFFERENCES IN THE CELL A) wall. B) cytoplasm. ...
... C) have filaments that are commonly called appendages. D) do not exist. MORPHOLOGY IS A TERM THAT REFERS TO THE __________ OF AN ORGANISM. A) size B) shape C) appendages D) attachment sites PROKARYOTES STAIN AS GRAM-POSITIVE OR GRAM-NEGATIVE BECAUSE OF DIFFERENCES IN THE CELL A) wall. B) cytoplasm. ...
Microbiology Homework # 1 Prof. Santos 1
... B. They reproduce by binary fission. C. They contain rigid cell walls made of peptidoglycan. D. They are found as single cells. E. All of the choices are correct. 2-Which is usually true of Archaea? A. They are found in extreme environments. B. They reproduce by mitosis. C. They contain rigid cell w ...
... B. They reproduce by binary fission. C. They contain rigid cell walls made of peptidoglycan. D. They are found as single cells. E. All of the choices are correct. 2-Which is usually true of Archaea? A. They are found in extreme environments. B. They reproduce by mitosis. C. They contain rigid cell w ...
Trimeric autotransporter adhesin
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In molecular biology, trimeric autotransporter adhesins (TAAs), are proteins found on the outer membrane of Gram-negative bacteria. Bacteria use TAAs in order to infect their host cells via a process called cell adhesion. TAAs also go by another name, oligomeric coiled-coil adhesins, which is shortened to OCAs. In essence, they are virulence factors, factors that make the bacteria harmful and infective to the host organism.TAAs are just one of many methods bacteria use to infect their hosts, infection resulting in diseases such as pneumonia, sepsis, and meningitis. Most bacteria infect their host through a method named the secretion pathway. TAAs are part of the secretion pathway, to be more specific the type Vc secretion system.Trimeric autotransporter adhesins have a unique structure. The structure they hold is crucial to their function. They all appear to have a head-stalk-anchor structure. Each TAA is made up of three identical proteins, hence the name trimeric. Once the membrane anchor has been inserted into the outer membrane, the passenger domain passes through it into the host extracellular environment autonomously, hence the description of autotransporter. The head domain, once assembled, then adheres to an element of the host extracellular matrix, for example, collagen, fibronectin, etc.