Homework Answers
Gram positive bacteria have MORE peptidoglycan in cell wall and thus hold first of four Gram stains and appear as the color PURPLE /VIOLET under microscope.
Generally Gram positive bacteria observed violet coloured due to crystal violet stain.
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peptidoglycan in their cell wals than Gram (4) bacteria do and thus hold the first of...
Gram-positive and gram-negative bacteria differ in that A. Gram-positive bacteria have more peptidoglycan in their cell...
Gram-positive and gram-negative bacteria differ in that A. Gram-positive bacteria have more peptidoglycan in their cell walls. B. Gram-positive bacteria have fimbriae but gram-negative bacteria do not. C. Gram-positive bacteria are spiral-shaped, and gram-negative bacteria are either rod-shaped or spherical. D. Only gram-negative bacteria can form endospores. E. There is no difference between gram negative and gram positive bacteria F. Gram positive are positively charged and gram negative are negatively charges An unknown bacterial species was found in the blood...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer membrane. Therefore, on the basis A) they would stain pink with gram stain. B) they would stain purple with gram stain C) they also lack a cell membrane. D) they would look just like animal cells. use light energy to generate chemical 2.) How would you classify a purple non-sulfur bacteria, which can u energy, but requires carbon from a source other than CO,...
1. Describe several advantages of differential staining procedures compared with simple staining techniques. 2. Give the...
1. Describe several advantages of differential staining procedures compared with simple staining techniques. 2. Give the purpose of each of the following reagents in a differential staining procedure: a. Primary stain b. Counter stain c. Decolorizing agent d. Mordant 3. Why is it important for the counter stain to be a lighter color than the primary stain? 4. You have done gram staining for a gram positive bacteria, but at the end you observed pinkish-red bacteria under microscope, what was...
Puzzles, I need one or two word answer for each question. Thank you An acidic dye...
Puzzles, I need one or two word answer for each question. Thank you An acidic dye will give a ___________ stain. Dye in which the color portion resides in the positive ion. A bacterial cell wall containing only 2-3 layers of peptidoglycan and surrounded by an outer membrane composed of phospholipids, lipopolysaccharide, lipoprotein, and proteins. (2 words) During starch hydrolysis, starch is broken down to __________. Secreted by bacteria into the surrounding environment in order to break down larger nutrient...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY You have stained a bacteria using the Gram staining technique...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY
You have stained a bacteria using the Gram staining technique what color would any endospores be if present? A. Colorless B. Green C. Pink D. Blue E. Purple 2. If you omitted the Safranin step in a gram staining procedure, what would be the color of a Gram-negative bacteria? A. Colorless B. Pink C. Green D. Purple E. Blue 3. Bacillus licheniformis would be what color and shape after a Gram staining? A. Purple...
Which of the following pairs is mismatched?
- Which of the following pairs is mismatched? d. iodine mordant e. none of the above a. alcohol-decolorizer b. crystal violet-basic dye c. safranin-acid dye 2, Suppose you Gram stained a sample from one colony and observed a field of red and blue cocci. Adjacent cells were not always the same color. You could conclude that you have d. old cells e. made a mistake a. a mixed culture b. young cells c. dividing cells 3. Which of the following...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
5. Why are simple stains able to "stick” to bacteria? Explain the chemical properties of the...
5. Why are simple stains able to "stick” to bacteria? Explain the chemical properties of the stain and bacteria surface. 3-Preparation of Bacterial Smears and Simple Stains Introduction Microbial cultures are handled using aseptic technique. Aseptie technique is a set of procedures used to minimize contamination of materials by microorganisms from the environment, and to minimize the spread of cultures around the laboratory. In this experiment, you will be using an inoculating loop to transfer bacteria from a culture tube...
BACKGROUND: Mycobacterium tuberculosis causes tuberculosis, one of the world’s deadliest diseases...
BACKGROUND:
Mycobacterium tuberculosis causes tuberculosis, one of the world’s
deadliest diseases. It is an acid-fast bacillus that is 2-4 um in
length and 0.2-0.5 um in width.
How many weeks, days,& hours would it take to see a
M.tuberculosis colony on solid media? Its generation time is listed
in the reading (above). Assume that bacterial colonies are not
visible to the naked eye unless they contain ≥ 2 millioncells. This
species forms aggregates of 5 cells on average. Show your...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT...
69. THE ENDOSPORE itself is might to stain_?_ color in an ACID FAST stain. (a) HOT pink (c) purple (d) green (e) baby-blue 70. All STAINS begin with a properly prepared _?_ . (a) dye (b) slide (c) smear (d) dog (e) cat 71. Which of the following is an ENDOTOXIN found in some microbes? This is results in fever, blood vessel dilation and possibly SHOCK when it is released into the human blood stream? (a) the plasma membrane (b)...
1.) Mycoplasmas are bacteria that lack a peptidoglycan las There are 27 an layer or outer membrane. Therefore, on the basis A) they would stain pink with gram stain. B) they would stain purple with gram stain C) they also lack a cell membrane. D) they would look just like animal cells. use light energy to generate chemical 2.) How would you classify a purple non-sulfur bacteria, which can u energy, but requires carbon from a source other than CO,...
1. Describe several advantages of differential staining procedures compared with simple staining techniques. 2. Give the purpose of each of the following reagents in a differential staining procedure: a. Primary stain b. Counter stain c. Decolorizing agent d. Mordant 3. Why is it important for the counter stain to be a lighter color than the primary stain? 4. You have done gram staining for a gram positive bacteria, but at the end you observed pinkish-red bacteria under microscope, what was...
NEED HELP WITH ALL PLEASE. MICROBIOLOGY
You have stained a bacteria using the Gram staining technique what color would any endospores be if present? A. Colorless B. Green C. Pink D. Blue E. Purple 2. If you omitted the Safranin step in a gram staining procedure, what would be the color of a Gram-negative bacteria? A. Colorless B. Pink C. Green D. Purple E. Blue 3. Bacillus licheniformis would be what color and shape after a Gram staining? A. Purple...
- Which of the following pairs is mismatched? d. iodine mordant e. none of the above a. alcohol-decolorizer b. crystal violet-basic dye c. safranin-acid dye 2, Suppose you Gram stained a sample from one colony and observed a field of red and blue cocci. Adjacent cells were not always the same color. You could conclude that you have d. old cells e. made a mistake a. a mixed culture b. young cells c. dividing cells 3. Which of the following...
5. Why are simple stains able to "stick” to bacteria? Explain the chemical properties of the stain and bacteria surface. 3-Preparation of Bacterial Smears and Simple Stains Introduction Microbial cultures are handled using aseptic technique. Aseptie technique is a set of procedures used to minimize contamination of materials by microorganisms from the environment, and to minimize the spread of cultures around the laboratory. In this experiment, you will be using an inoculating loop to transfer bacteria from a culture tube...
BACKGROUND:
Mycobacterium tuberculosis causes tuberculosis, one of the world’s
deadliest diseases. It is an acid-fast bacillus that is 2-4 um in
length and 0.2-0.5 um in width.
How many weeks, days,& hours would it take to see a
M.tuberculosis colony on solid media? Its generation time is listed
in the reading (above). Assume that bacterial colonies are not
visible to the naked eye unless they contain ≥ 2 millioncells. This
species forms aggregates of 5 cells on average. Show your...
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