Biology: Life on Earth with Physiology (11th Edition)
11th Edition
ISBN: 9780133923001
Author: Gerald Audesirk, Teresa Audesirk, Bruce E. Byers
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: Life on Earth with Physiology (11th Edition)
Ch. 20.1 - describe some differences between bacteria and...Ch. 20.1 - describe the typical sizes and shapes of...Ch. 20.2 - Unwelcome Dinner Guests A few of the bacteria that...Ch. 20.2 - describe the range of environments inhabited by...Ch. 20.2 - As part of a study on the relationship between...Ch. 20.2 - Unpleasant breath odors are caused mainly by...Ch. 20.2 - What might explain the observation that most...Ch. 20.2 - describe adaptations that help protect prokaryotes...Ch. 20.2 - Some of the enzymes that have important uses in...Ch. 20.2 - explain how prokaryotes reproduce and exchange...
Ch. 20.2 - What is the main advantage of prokaryotic fission,...Ch. 20.3 - Unwelcome Dinner Guests Many of the bacteria...Ch. 20.3 - explain how prokaryotes affect animal and plant...Ch. 20.3 - If all of Earths nitrogen-fixing prokaryotes were...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 - Unwelcome Dinner Guests How do harmful bacteria...Ch. 20.4 - describe the structure and characteristics of...Ch. 20.4 - Why are viruses unable to replicate outside of a...Ch. 20.4 - describe the effects they can have on host...Ch. 20.4 - Biotechnologists often use viruses to transfer...Ch. 20 - Prob. 1ACCh. 20 - ____________, have peptidoglycan in...Ch. 20 - The name of the process by which DNA is...Ch. 20 - Describe some of the ways in which prokaryotes...Ch. 20 - Before the discovery of prions, many (perhaps...Ch. 20 - Prokaryotic cells are ____________,...Ch. 20 - A community of prokaryotes surrounded by slime and...Ch. 20 - What are nitrogen-fixing bacteria, and what role...Ch. 20 - Many prokaryotes use ____________ to move about....Ch. 20 - Which of the following statements about archaea is...Ch. 20 - Describe some of the extreme environments in which...Ch. 20 - ____________,bacteria inhabit environments that...Ch. 20 - Viruses a. are usually photosynthetic. b. consist...Ch. 20 - What is an endospore? What is its function?Ch. 20 - Prokaryotes reproduce by ____________ and may...Ch. 20 - Applying fertilizer near an oil spill to Increase...Ch. 20 - What is conjugation? What role do plasmids play in...Ch. 20 - The plant nutrient ammonium is produced by...Ch. 20 - Why are prokaryotes especially useful in...Ch. 20 - Cholera, gonorrhea, and pneumonia are some of the...Ch. 20 - Describe the structure of a typical virus. How do...Ch. 20 - A virus consists of a molecule of __________ or...Ch. 20 - Describe some examples of how prokaryotes are...Ch. 20 - How do archaea and bacteria differ? How do...
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Prokaryotic vs. Eukaryotic Cells (Updated); Author: Amoeba Sisters;https://www.youtube.com/watch?v=Pxujitlv8wc;License: Standard youtube license