Microbiology With Diseases By Taxonomy (6th Edition)
6th Edition
ISBN: 9780134832302
Author: Robert W. Bauman Ph.D.
Publisher: PEARSON
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In the diagram below, identify the structures of a cyanobacterial cell based on the following descriptions:
a) Outer cellular covering which includes:
Mucilaginous layer – outermost layer covering the cell wall; protects the cell from harmful factors of the environment
Cell wall – found just below the mucilaginous layer; 2 or 3-layered, the inner layer lies in between the outer wall layer and plasma membrane; the outer layer is made of peptidoglycan
Innermost plasma membrane – selectively permeable membrane enclosing the cytoplasm
b) Cytoplasm – found below the plasma membrane; the protoplasm which contains structures of different shapes and functions. Lamellae, which contain pigments such as chlorophylls, carotenes, xanthophylls, phycoerythrin and phycocyanin, are located in the peripheral region of cytoplasm. Ribosomes may also be found scattered in the cytoplasm.
c) Nucleic material – the nucleoplasm that is centrally located in the cell and contains chromatin in the form…
For this assignment you will create a dichotomous key to
help you Identify Bacteria (which are a pain in the bum to
identify on the species level.) We will be focused on the
general terms of bacteria and the only Phylum that will be
addressed is the Cyanobacteria.
Use the following to create a dichotomous key to begin to
identify Bacteria:
BACTERIA
Bacillus
Coccus
Spirillium
Phylum Cyanobacteria
Gram (+) (-)
Root nodules
To Begin use the following question:
Does the organism exhibit a membrane bound
nucleus?
What are Endosymbiotic bacteria?
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Which of the following is NOT true about endospores? O 1) Spores are resistant to heat, radiation, cold, and dessication. O 2) One endospore germinates into one vegetative cell. O 3) They are a method of reproduction for bacterial cells when growth conditions are inhospitable. O 4) Endospores are clinically significant in causing disease. O 5) The endospore has a thick spore coat that protects it.arrow_forwardGive the common name of a eukaryotic microbe that is unicellular,walled, nonphotosynthetic, nonmotile, and bud-forming.arrow_forward35) Researchers have found a new type of bacteria, and they want to determine its phylum. What would be the most reliable method to do so? A) Conducting a Gram-stain test B) Performing an analysis of metabolic pathways C) Determining the ribosomal RNA sequence of the bacteria D) Analyzing the morphological characteristics of the bacteriaarrow_forward
- Which of the following describes a bacteria that is circular in shape and found in groups of 4? O 1) tetrad O 2) sarcina O 3) diplococci O 4) streptobacilli O 5) streptococcusarrow_forwardYou have discovered a new coccoid-shaped microorganism with no nucleus, a rigid cell wall, and a diameter of 2 μm. Chemical tests reveal that its cell wall does NOT contain peptidoglycan. The new microorganism is A) most likely a bacterium. B) most likely a eukaryote. C) most likely an archaeon. D) either a bacterium or an archaeon.arrow_forwardProvide at least four terms to describe bacterial arrangements (groups within they may be found).arrow_forward
- What advantages might a bacterial species that forms multicellular arrangements (e.g., clusters or chains) have that are not afforded unicellular bacteria?arrow_forwardSome groups of bacteria can go dormant during periods of environmental stress through the formation of _______. A) magnetosomes B) peptidoglycan C) endospores D) piliarrow_forwardWhat characteristic shapes can bacteria assume? Describe the ways in which bacterial cells cluster together.arrow_forward
- Refrigeration (~4 C) is used to slow down the spoiling of food. Which classification or classifications of bacteria would be of concern even when refrigeration is used and why?arrow_forwardHow are bacteria classified according to: Number of Cells Size of Cells Presence or Absence of Nucleus Form or Shapearrow_forward1) What cell would a metabolically active form of prokaryotes?? a) living b) vegetative c) active d) sporulative e) cystic 2) Categroize the "possible answers descriptions (which are attributes and classifications)" in the image to the bacteria:arrow_forward
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Bacterial Endospore Formation -Biology Pundit; Author: Biology Pundit;https://www.youtube.com/watch?v=6_sinRhE8zA;License: Standard YouTube License, CC-BY