Microbiology: An Introduction (13th Edition)
13th Edition
ISBN: 9780134605180
Author: Gerard J. Tortora, Berdell R. Funke, Christine L. Case, Derek Weber, Warner Bair
Publisher: PEARSON
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Textbook Question
Chapter 4, Problem 2A
The smallest eukaryotic cell is the motile alga Micromonas. What is the minimum number of organelles this alga must have?
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Which of the following would be found inside a bacterial cel?
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Which of the following would be found on the external surface of a bacterial cell?
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Which of the following structures aid in biofim formation?
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True or False
Cell walls are present in the cells of archaea, bacteria, algae, fungi, and plants only.
Photosynthetic unicellular prokaryotes such as Oscillatoria exhibit a green color when viewed under a microscope because of the presence of numerous chloroplasts.
The nuclear membrane is a double-membrane structure that constitutes the outermost portion of the nucleus and is continuous with the Endoplasmic Reticulum.
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…
Chapter 4 Solutions
Microbiology: An Introduction (13th Edition)
Ch. 4 - DRAW IT Diagram each of the following flagellar...Ch. 4 - Endospore formation is called (a) _____. It is...Ch. 4 - DRAW IT Draw the bacterial shapes listed in (a),...Ch. 4 - Match the structures in column A to their...Ch. 4 - Why is an endospore called a resting structure? Of...Ch. 4 - Compare and contrast the following a. simple...Ch. 4 - Prob. 7RCh. 4 - Starch is readily metabolized by many cells, but a...Ch. 4 - Match the characteristics of eukaryotic cells in...Ch. 4 - NAME IT What group of microbes is characterized by...
Ch. 4 - Which of the following is not a distinguishing...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which statement best describes what happens when a...Ch. 4 - Which of the following statements best describes...Ch. 4 - Which of the following is false about fimbriae? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - Which of the following pairs is mismatched? a....Ch. 4 - You have isolated a motile, gram-positive cell...Ch. 4 - The antibiotic amphothericin B disrupts plasma...Ch. 4 - How can prokaryotic cells be smaller than...Ch. 4 - The smallest eukaryotic cell is the motile alga...Ch. 4 - Two types of prokaryotic cells have been...Ch. 4 - In 1985, a 0.5-mm cell was discovered in...Ch. 4 - When E. coli cells are exposed to a hypertonic...Ch. 4 - Clostridium botulinum is a strict anaerobe; that...Ch. 4 - A South San Francisco child enjoyed bath time at...Ch. 4 - Live cultures of Bacillus thuringiensis (Dipel)...
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- Figure 4.7 Prokaryotic cells are much smaller than eukaryotic cells. What advantages might small cell size confer on a cell? What advantages might large cell size have?arrow_forwardVisit: https://www.youtube.com/watch?v=Md0PtdRxXvw Are the flagella at the anterior or posterior end? Are these organisms single-celled, colonial, or multicellular? Are the cells moving? If so, can you determine the source of the movement?arrow_forwardAn electron photomicrograph of a newly discovered cell shows long projections with a basal body in the cell wall. What kind of projections are these? How might this cell behave in its environment because of the presence of this structure?arrow_forward
- Joseph, a 29 years old man, went to a local health clinic with complaints of intermittent diarrhea for a few months and trouble sleeping. A stool specimen was collected and preserved in 10% formalin and PVA. An O&P examination was performed, along with a permanent trichrome stain. The stain revealed the organism shown below that measured 10 um in diameter, with a large, centrally located vacuole and small red nuclei within the peripheral ring of cytoplasm.arrow_forwardCell membranes are described to be fluid mosaics. What does that mean? Are all membranes components free to diffuse laterally anywhere within the membrane? With referencesarrow_forwardCan you help me understand figure 4.23 regarding Flagella and Cilia?arrow_forward
- Asbestos is a material that was once used extensively in construction. One risk from working in a building that contains asbestos is the development of asbestosis caused by the inhalation of asbestos fibers. Cells will take up asbestos by phagoctytosis, but are not able to break it down. As a result, asbestos fibers accumulate in which organelle? Golgi apparatus nucleus peroxisomes lysosomesarrow_forwardFor the following organelles or structures identify their functions.1. Mitochondrion –2. Chloroplast –3. Nucleus –4. Golgi apparatus –5. Rough endoplasmic reticulum –6. Lysosome –7. Ribosome –8. Capsule –9. Plasma membrane –10. Cell wall –11. Pili –12. Flagellum –13. Central vacuole –14. Smooth endoplasmic reticulum –15. Nucleolus -arrow_forwardWhich of the following is not true for eukaryotic cells? None of these Cell wall contains peptidoglycan as one of the major components Chromosome contain histone Nucleus is bounded by nuclear membranearrow_forward
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