Concept explainers
DRAW IT Diagram each of the following flagellar arrangements:
a. lophotrichous
b. monotrichous
c. peritrichous
d. polar
e. amphitrichous
To review:
The bacteria flagella arrangements.
Introduction:
Flagella are present both in prokaryotes and eukaryotes and they facilitate cell motility. It is a whip-like, hollow, cylindrical structure that contains the protein called flagellin. The arrangement of flagella is different in different species. It consists of three different parts, namely filament, hook, and basal body. Flagella eukaryotes derive energy from ATP, whereas flagella in prokaryotes derive energy from proton motive force.
Explanation of Solution
Pictorial representation:
Based on the flagella arrangements, the organisms are classified into different types.
- Lophotrichous: Two or more flagella at one end of the cell.
- Monotrichous: Single flagellum present at one end of the cell.
- Peritrichous: More number of flagella present on the entire surface of the cell.
- Polar: Flagella are present at each pole of the bacterial cell.
- Amphitrichous: A bunch of flagella present at both ends of the bacterial cell.
The flagella present on the cells are useful for locomotion and attachment. It contains filamentous protein which helps to propel a cell through liquid. The flagella also act as sensory organelle and aid in detecting changes in the temperature and pH.
Want to see more full solutions like this?
Chapter 4 Solutions
Microbiology: An Introduction
- Find out about the organisations and the movements aimed at the conservation of our natural resources. Eg Chipko movement and Greenpeace. Make a project report on such an organisation.arrow_forwardWhat are biofertilizers and mention the significancearrow_forwardPCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen. How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans? Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.arrow_forward
- Other than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?arrow_forwardSelection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forwardCompetition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forward
- Species Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forwardmagine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forwardWhat is the difference between Uniporters, Symporters and Antiporters? Which of these are examples of active transport?arrow_forward
- Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningHuman Physiology: From Cells to Systems (MindTap ...BiologyISBN:9781285866932Author:Lauralee SherwoodPublisher:Cengage LearningConcepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College