Bacteria tend to stain more readily with cationic (positively charged) dyesbecause bacteriaa. contain large amounts of alkaline substances on their surfaces.b. contain large amounts of acidic substances on their surfaces.c. carry a neutral charge on their surfaces. d. have thick cell walls.

Bacteria tend to stain more readily with cationic (positively charged) dyesbecause bacteriaa. contain large amounts of alkaline substances on their surfaces.b. contain large amounts of acidic substances on their surfaces.c. carry a neutral charge on their surfaces. d. have thick cell walls.

Concepts of Biology

1st Edition

ISBN:9781938168116

Author:Samantha Fowler, Rebecca Roush, James Wise

Publisher:Samantha Fowler, Rebecca Roush, James Wise

Chapter3: Cell Structure And Function

Section: Chapter Questions

Problem 4RQ: When viewing a specimen through a light microscope, scientists use ______ to distinguish the...

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Question

Bacteria tend to stain more readily with cationic (positively charged) dyes
because bacteria
a. contain large amounts of alkaline substances on their surfaces.
b. contain large amounts of acidic substances on their surfaces.
c. carry a neutral charge on their surfaces. d. have thick cell walls.

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Bacteria tend to stain more readily with cationic (positively charged) dyes because bacteria a. contain large amounts of alkaline substances c. are neutral b. contain large amounts of acidic substances d. have thick cell walls
Bacteria tend to stain more readily with cationic (positively charged) dyes because bacterial surfaces a. contain large amounts of alkaline substances. b. contain large amounts of acidic substances. c. are neutral. d. have thick cell walls.
1)What is the natural color of cytoplasm? How is it related to our need to stain bacterial cells? 2) Which of the following is the main goal when staining a culture? A) improve contrast B) identify bacteria C) Visualize bacterial structures
1. a) What is Gram staining? b) Describe step by step the procedure c) Explain the basis of Gram staining to differentiate bacteria
Why are staining methods used in microbiology? Choose all that apply A. Staining results can have medical implications for an infected B. To clearly see the internal structures of the bacteria C. The stains can be used to dinginuish between bacteria type D. It is easier to very small microscope.
Dyes are used to stain specimens that will be observed using the microscope to a. increase the magnification. b. increase resolution. c. increase contrast. d. make it visible. e. none of the above.
The use of the Gram stain in microbiology is important because it differentiates A) Bacteria from Archaea. B) prokaryotic from eukaryotic cells. C) bacterial cells with different types of cell walls. D) archaeal cells with different types of metabolism.
UV light is able to damage bacterial cells by:a. preventing mitosis b. damaging DNA c. dissolving cell membranes d. coagulating cytoplasm
Subject: Microbiology The author of a general biology textbook writes in reference to the development of antibiotic resistance, “The speed at which bacteria reproduce ensures that sooner or later a mutant bacterium will appear that is able to resist the poison.” How might this mutant bacterial cell appear? Do you agree with the statement? Does this bode ill for the future use of antibiotics?
The cell wall of bacteria is composed ofa. lipopolysaccharide.b. phospholipids.c. cellulose.d. peptidoglycan.e. protein capsomers.
A bacterium is_______ (choose all that apply). a. an organism c. an animal b. single-celled d. a eukaryote
Explain in your own words what you know about Gram positive and Gram negative bacteria and why they stain differently