Characteristics of Living Things

The idea that all living things come from other living things, not from non-living matter.

A controlled experiment that helped disprove spontaneous generation by showing maggots only appeared on meat exposed to flies.

A carefully designed experiment that disproved spontaneous generation by showing bacteria only appear in broth exposed to air with existing bacteria.

A system for grouping organisms based on shared characteristics, where each level becomes more specific.

A group of organisms that share many similar characteristics, including their ability to reproduce and create fertile offspring.

The study of the relationships between organisms and their environments.

The process of grouping organisms based on similarities to create a hierarchical system for understanding biodiversity.

Aristotle's classification system for 'blood-having' animals, dividing them into three categories: those that fly, those that swim, and those that walk, run, or crawl.

The most prevalent category of animals in Aristotle's classification system for 'blood-having' animals.

The combined percentage of animals that either fly or swim in Aristotle's classification system for 'blood-having' animals.

A cow would be classified as an animal that walks, runs, or crawls, while a whale would be classified as an animal that swims, according to Aristotle's classification system.

Aristotle's classification system is limited due to its small number of categories (only three). It also doesn't match modern scientific classifications, which use a more complex system based on various characteristics beyond movement.

A system used by scientists to organize and classify living things into groups based on shared characteristics.

A two-word naming system used for classifying organisms, where the first word represents the genus and the second word represents the species.

The classification system used to organize all living things into a hierarchical structure, with increasingly specific levels.

Similar evolutionary history means organisms are classified more closely together. This idea helps explain how species change over time.

A tool used to identify unknown organisms by asking a series of questions with two possible answers at each step, leading to a specific identification.

The three domains of life are Bacteria, Archaea, and Eukarya. These groups represent the broadest classification levels.

Organisms in the domain Bacteria are single-celled, prokaryotic, and can be found in diverse environments. They possess cell walls, but lack membrane-bound organelles.

Organisms in the domain Archaea are single-celled, prokaryotic, and often thrive in extreme environments. They have unique cell walls and can survive harsh conditions.

Organisms that lack a true nucleus and other membrane-bound organelles. They are unicellular and are found in diverse environments.

One of the three domains of life, characterized by prokaryotic cells and unique adaptations for extreme environments.

Organisms whose cells have a true nucleus and other membrane-bound organelles. They can be unicellular or multicellular.

A group of single-celled eukaryotes with diverse forms and lifestyles. They are found in various habitats like water and soil.

A group of eukaryotic organisms that obtain nutrients by absorbing organic matter from their surroundings. They are mostly multicellular and include mushrooms and molds.

Multicellular eukaryotic organisms that make their own food through photosynthesis. They are the foundation of most terrestrial ecosystems.

Multicellular eukaryotic organisms that obtain nutrients by consuming other organisms. They are diverse in form and lifestyle.

Early Earth's atmosphere was mainly composed of water vapor, carbon dioxide, and methane, with frequent volcanic eruptions and stormy weather.