Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
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Textbook Question
Chapter 20, Problem 4FIB
____________,bacteria inhabit environments that lack oxygen. ____________,bacteria capture energy from sunlight.
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I am doing my microbiology homework and I need help with these questions:
1) List the structures ALL bacteria possess.
2) Identify three structures SOME but not all bacteria possess.
5) Describe the structure and function of three different structures found outside of the bacterial cytoplasmic membrane.
6) Differentiate between the two main types of bacterial envelope structures.
7) Why are Gram-positive cell walls stronger than Gram-negative cell walls?
8) Name a substance in the envelope of SOME bacteria that can cause severe symptoms in humans.
9) Describe the causes of sporogenesis and germination
10) Compare and contrast the major features of archaea, bacteria and eukaryotes by completing the table below.
Characteristic
Bacteria
Archaea
Eukarya
Chromosome
Type of Ribosomes
Protein Synthesis Similar to Eukarya
Sterols In Membrane
Membrane-bound Organelles
Peptidoglycan in Cell wall
The following table depicts characteristics of five prokaryotic species (1-5). Use the information in the table to answer the following question.
Species 1
Species 5
None
Trait
Plasmid
Gram
Staining
Results
Nutritional
Mode
Species 2
None
Species 3
R
Species 4
IF
Positive
Positive
Negative
Negative
Negative
Chemohetero- Chemoauto-
troph
Chemohetero- Chemohetero- Photoauto-
troph
Anaerobic
troph
troph
troph
Aerobic
Specialized methanotroph
Metabolic (obtains carbon
Pathways and energy from
methane)
Anaerobic
methanogen
Anaerobic
alcoholic
fermentation
Anaerobic lactic nitrogen fixation
acid
fermentation
and aerobic
photosystems
I and II
Other
Features
All of the species shown have a cell wall that consists partly of an outer membrane of lipopolysaccharide EXCEPT
Internal
membranes
Fimbriae
Flagellum
Pili
Thylakoids
species 1 only
species 2 only
species 3, 4, and 5
species 1 and 2 only
0 O 0 0
There are five major clades of bacteria. List three of them and provide their general characteristics and at least one example for each group.
Chapter 20 Solutions
Biology
Ch. 20.1 - describe some differences between bacteria and...Ch. 20.1 - describe the typical sizes and shapes of...Ch. 20.2 - What might explain the observation that most...Ch. 20.2 - Unwelcome Dinner Guests A few of the bacteria that...Ch. 20.2 - Some of the enzymes that have important uses in...Ch. 20.2 - Unpleasant breath odors are caused mainly by...Ch. 20.2 - As part of a study on the relationship between...Ch. 20.2 - What is the main advantage of prokaryotic fission,...Ch. 20.2 - describe the range of environments inhabited by...Ch. 20.2 - describe adaptations that help protect prokaryotes...
Ch. 20.2 - explain how prokaryotes reproduce and exchange...Ch. 20.3 - If all of Earths nitrogen-fixing prokaryotes were...Ch. 20.3 - Unwelcome Dinner Guests Many of the bacteria...Ch. 20.3 - explain how prokaryotes affect animal and plant...Ch. 20.3 - explain prokaryotes role in nutrient recycling?Ch. 20.3 - describe how prokaryotes help clean up pollution?Ch. 20.3 - describe some of the pathogenic bacteria that...Ch. 20.4 - Why are viruses unable to replicate outside of a...Ch. 20.4 - Biotechnologists often use viruses to transfer...Ch. 20.4 - describe the structure and characteristics of...Ch. 20.4 - describe the effects they can have on host...Ch. 20.4 - Prob. 3CYLCh. 20.4 - Unwelcome Dinner Guests How do harmful bacteria...Ch. 20 - The name of the process by which DNA is...Ch. 20 - A community of prokaryotes surrounded by slime and...Ch. 20 - Which of the following statements about archaea is...Ch. 20 - Viruses a. are usually photosynthetic. b. consist...Ch. 20 - Applying fertilizer near an oil spill to Increase...Ch. 20 - ____________, have peptidoglycan in...Ch. 20 - Prokaryotic cells are ____________,...Ch. 20 - Many prokaryotes use ____________ to move about....Ch. 20 - ____________,bacteria inhabit environments that...Ch. 20 - Prokaryotes reproduce by ____________ and may...Ch. 20 - The plant nutrient ammonium is produced by...Ch. 20 - Cholera, gonorrhea, and pneumonia are some of the...Ch. 20 - A virus consists of a molecule of __________ or...Ch. 20 - Describe some of the ways in which prokaryotes...Ch. 20 - What are nitrogen-fixing bacteria, and what role...Ch. 20 - Describe some of the extreme environments in which...Ch. 20 - What is an endospore? What is its function?Ch. 20 - What is conjugation? What role do plasmids play in...Ch. 20 - Why are prokaryotes especially useful in...Ch. 20 - Describe the structure of a typical virus. How do...Ch. 20 - Describe some examples of how prokaryotes are...Ch. 20 - How do archaea and bacteria differ? How do...Ch. 20 - Prob. 1ACCh. 20 - Before the discovery of prions, many (perhaps...
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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license