Characteristics of Life Quiz
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Questions and Answers

What are the six characteristics of life mentioned in the text?

Movement, response to environment, growth & development, metabolism, adaptation & evolution, reproduction

Give an example of an organism responding to its environment.

Sunflowers following the sun

Explain the concept of maintaining homeostasis.

Maintaining a stable internal environment by responding to external changes.

What is the role of DNA in living organisms?

<p>Contains hereditary material and genetic information.</p> Signup and view all the answers

Differentiate between asexual and sexual reproduction.

<p>Asexual reproduction results in an exact copy, while sexual reproduction involves the crossing of genes.</p> Signup and view all the answers

What is cellular organization, and how does it vary in living organisms?

<p>Cellular organization refers to the structure of organisms at a cellular level. It can be unicellular (e.g., bacteria) or multicellular (e.g., plants).</p> Signup and view all the answers

What is binomial nomenclature and how is it structured?

<p>Binomial nomenclature is the formal system of naming species whereby each species is assigned a genus name followed by a specific name. The genus name begins with a capital letter and both parts of the name are italicized or underlined.</p> Signup and view all the answers

Explain the concept of dichotomous keys and what they are used for.

<p>Dichotomous keys are a structure where a large set of items are broken down into smaller subsets, ultimately leading to the smallest available classification unit. They are used for identifying organisms based on a series of choices between alternative characters.</p> Signup and view all the answers

What is the study of phylogeny and how is it represented?

<p>Phylogeny is the study of evolutionary relations between and among species. It is visually represented by a phylogenetic tree, which is a branching diagram used to show evolutionary relationships between different species or groups.</p> Signup and view all the answers

Define a clade and its significance in taxonomy.

<p>A clade is a taxonomic group that includes a single common ancestor and all its descendants. In taxonomy, clades are used to show evolutionary relatedness among species and are depicted in phylogenetic trees.</p> Signup and view all the answers

Explain the importance of prokaryotes in ecosystems.

<p>Prokaryotes play essential roles in ecosystems by fixing nitrogen, producing oxygen, and forming mutualistic relationships. They are crucial for nutrient cycles and have commercial uses in industries like food production.</p> Signup and view all the answers

What is a plasmid and where is it commonly found?

<p>A plasmid is a small loop of DNA often found in prokaryotic cells. It contains a few genes that can provide advantages for the cell, such as antibiotic resistance or the ability to produce certain proteins.</p> Signup and view all the answers

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