Concept explainers
To determine: The similarities between tetanus and botulinum toxins.
Introduction: Toxins are harmful materials that are produced by different organisms. Some of the molecules can act as toxins even in low concentrations while others need to be present in higher concentrations to show their toxic effects. Toxins from different species are used in low quantities to produce an antidote against them.
To determine: The differences between tetanus and botulinum toxins.
Introduction: All the living species have different defense mechanisms. The release of toxins is one of the defense mechanism that is adopted by many of the species. Toxins coming from different species differ from each other based on the species and the mode of the action of toxin.
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Chapter 13 Solutions
Human Physiology: An Integrated Approach (8th Edition)
- 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
- What are Amyloid Fibrils? What biological functions are these known to perform?arrow_forwardHow do histamine and prostaglandins help in the mobilization of leukocytes to an injury site? What are chemotactic factors? How do they affect inflammation process?arrow_forwardCompare and contrast neutrophils and macrophages. Describe two ways they are different and two ways they are similar.arrow_forward
- Describe the effects of three cytokines (not involved in the initial inflammation response). What cells release them?arrow_forwardDescribe activation of helper T cells or cytotoxic T cellsarrow_forwardCompare and contrast MHC 1 and MHC 2. Describe two way they are different and two ways they similar including how they are used in antigen presentation.arrow_forward