Model organisms are dispersed across the tree of life Fruit fly Drosophila melanogaster Nematode Caenorhabditis elegans Yeast Saccharomyces cerevisiae Mouse Mus musculus Mouse-eared cress Arabidopsis thaliana Eukaryotes Mycoplasma gentalium Archaea Bacillus subtilis Helicobacter- pylori -E. coli Eubacteria FIGURE 1-11 The tree shows evolutionary relationships among the major groups of organisms: Bacteria, Archaea, and Eukaryota (plants, fungi, and animals). [(Clockwise, from top, center) Sinclair Stammers/Science Source; SCIMAT/Science Source; Darwin Dale/Science Source; Biophoto Associates/Science Photo Library; Imagebroker.net/SuperStock; © blickwinkel/Alamy.]

Q: Suppose that there is a 0.3% chance a planet will develop life, a 3.3% chance that the life will…

A: The problem needs step by step calculation of the percentage. The number obtained after calculating…

Q: A hierarchy can be described as a situation in which entities are subordinate to other entities, the…

A: Plant donot have any respiratory system. They take CO2 and produce O2 and relese O2 to the…

Q: Among the most prevalent pathologies that afflicthuman beings is heart disease, which can have a…

A: Heart diseases are chronic diseases that usually progress with age. The expression of genes is…

Q: How are organisms grouped

A: Organism is a living being with organised structure who can respond to stimuli.

Q: How do biologists define life, and what were the origins of life?

A: This question is about and origin of life.

Q: what properties of life would you be able to identify the bade?

A: Cell is the smallest structural and, functional unit of life. It is simple machinery that houses all…

Q: Why might morphological traits be misleading when grouping things?

A: Morphological traits are outward appearance and structure, or form of an organism. While grouping…

Q: What is our learnings about the Origin of Species?

A: origin of species was formulated by the darwin.

Q: what are the differences between homologous & analogous

A: Some species can be very close, although small genetic mutations have caused a great deal of…

Q: Which are smallest known self replicating system?

A: Self-replication is any behavior of a dynamical system that yields the construction of an identical…

Q: Multicellularity has evolved multiple times in different lineages on Earth. What is one major…

A: Multicellular organisms contain more than one cell. It is more complex in structure and advanced…

Q: What is reproduction and its characterstics of living organisms?

A: Life is the major component of the survival of the earth. It is associated with development and…

Q: Do all living things have all of the characteristics of life ? If your answer is no,give an example.

A: All living organisms that have life share several key characteristics such as: order, sensitivity or…

Q: diversity complexity and relationship among organisms

A: The new techniques and methods have created exciting new channels of investigation of the methods…

Q: What is the correct orderin the hierarchal levels of organization of life, from smallest to largest?…

A: The ecosystem is a wide geographical region consisting of  living organisms that live in conjunction…

Q: What is the origin of biological reproduction, and what necessitated the emergence of reproduction…

A: Reproduction is a process of formation of new individuals or offspring from existing individuals…

Parasitic infections

A parasite is an organism that lives in the body of another organism and obtains food at the expense of the host. There are two kinds of parasites they are internal and external. An internal parasite lives inside another organism and is known as endoparasite. An external parasite lives on the body surface of the host and is known as an ectoparasite.