Biology Flashcards: Characteristics of Life

Characteristics of Living Things

• Composed of cells, which are the basic unit of life.
• Made of similar chemicals such as proteins, nucleic acids, carbohydrates, and lipids.
• Exhibit growth and development, changing in size and complexity over time.
• Respond to environmental stimuli, allowing adaptation and survival.
• Require and obtain energy to maintain processes like metabolism and movement.
• Capable of reproduction, ensuring the continuation of species.

Basic Needs of Living Things

• Require living space for survival and access to resources.
• Maintain homeostasis, an internal balance crucial for function.
• Need water for various biological processes, including hydration and chemical reactions.
• Depend on energy sources, with plants utilizing sunlight and animals consuming food.

Six Kingdoms of Life

• Domains: The highest level of classification, encompassing various kingdoms.
• Kingdoms include diverse forms of life, with each categorized based on shared characteristics.
• Phylum, class, order, family, genus, and species represent increasingly specific classifications of organisms.

Domains of Life

• Eukarya: Organisms with complex cells containing a nucleus, including plants, animals, fungi, and protists.
• Bacteria: Single-celled microorganisms with simple structures, often found in various environments.
• Archaea: Single-celled organisms similar to bacteria but with distinct biochemistry and genetics, often thriving in extreme conditions.

Explore essential flashcards that identify the six key characteristics of living things, such as cellular composition and energy needs. This interactive quiz will help reinforce your understanding of what defines life. Perfect for students in biological sciences!