Characteristics of Life Quiz
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Questions and Answers

Which characteristic of life involves maintaining a constant internal environment?

  • Acquiring and using energy
  • Sensing the environment
  • Responding to external stimuli
  • Maintaining homeostasis (correct)

What is the smallest unit of life contained within a plasma membrane?

  • Tissue
  • Organ
  • Organism
  • Cell (correct)

What is a cohesive group of similar cells performing a specific function called?

  • Tissue (correct)
  • Organism
  • Organ
  • Organ system

Which characteristic of life involves the ability to adapt to the environment?

<p>Adapting to the environment (C)</p> Signup and view all the answers

What is a structure composed of more than one tissue called?

<p>Organ (B)</p> Signup and view all the answers

What is the science that deals with the study of all living things called?

<p>Biology (D)</p> Signup and view all the answers

What is the broad biological function performed by a group of organs called?

<p>Organ system (C)</p> Signup and view all the answers

What is the meaning of homeostasis?

<p>Maintaining a relatively constant internal environment (B)</p> Signup and view all the answers

How is body warmth maintained in humans?

<p>Unconscious blood vessel constriction and conscious selection of appropriate clothing (C)</p> Signup and view all the answers

What is the natural hierarchy of biological organization?

<p>Atoms, molecules, cells, tissues, organs, organ systems, organism (D)</p> Signup and view all the answers

What is taxonomy in biology?

<p>Branch of science classifying organisms into groups with similar characteristics (C)</p> Signup and view all the answers

What does artificial classification in biology use to identify organisms?

<p>A system of names to identify organisms and show their relationships (B)</p> Signup and view all the answers

What does natural organization in biology emerge from?

<p>The structure of organisms (B)</p> Signup and view all the answers

What is the purpose of taxonomy in biology?

<p>To classify organisms into groups with similar characteristics (D)</p> Signup and view all the answers

What is the smallest unit of life according to biological organization?

<p>Cells (A)</p> Signup and view all the answers

What are the broad biological function performed by a group of organ systems called?

<p>Organism (B)</p> Signup and view all the answers

What is the meaning of 'homeostasis' in Greek?

<p>Staying the same (A)</p> Signup and view all the answers

What does artificial classification in biology use to group organisms?

<p>Similar characteristics (D)</p> Signup and view all the answers

Humans are considerd as?

<p>Eukarya (A)</p> Signup and view all the answers

What is the correct order of taxonomy for modern humans?

<p>Kingdom – Animalia, Phylum – Vertebrata, Class – Mammalia, Order – Primates, Family – Hominidae, Genus – Homo, Species – sapiens (C)</p> Signup and view all the answers

Which taxonomic level includes ONLY Homo sapiens (modern day humans)?

<p>Genus (D)</p> Signup and view all the answers

Flashcards

Homeostasis

Maintaining a stable internal environment in an organism.

Cell

The smallest unit of life, enclosed by a membrane.

Tissue

A group of similar cells working together.

Adaptation

An organism's ability to change or adjust to its environment.

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Organ

A structure made of different tissues working together.

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Biology

The study of living things.

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Organ system

Several organs working together for a specific function.

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Biological organization

Hierarchical structure of life, from atoms to organisms.

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Taxonomy

Classifying organisms based on similar characteristics.

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Artificial Classification

Organism grouping based on features (not evolutionary links).

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Natural Classification

Organism grouping based on evolutionary relationships.

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Human Body Temperature Maintenance

Maintained through unconscious blood vessel adjustments and conscious choices of clothing.

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Eukarya

Domain of organisms with cells containing a nucleus and other membrane-bound organelles.

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Modern Human Taxonomy

Kingdom Animalia, Phylum Vertebrata, Class Mammalia, Order Primates, Family Hominidae, Genus Homo, Species sapiens.

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Homo sapiens

Scientific name for modern humans.

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Organism

A complete living thing.

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Species

Group of organisms that can naturally interbreed and produce fertile offspring

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Study Notes

Characteristics of Life

  • Homeostasis involves maintaining a constant internal environment
  • Adaptation involves the ability to adapt to the environment

Levels of Organization

  • The smallest unit of life is a cell, contained within a plasma membrane
  • A group of similar cells performing a specific function is called tissue
  • A structure composed of more than one tissue is called an organ
  • A group of organs performing a broad biological function is called an organ system
  • The natural hierarchy of biological organization is: cell → tissue → organ → organ system

Taxonomy and Classification

  • Taxonomy is the science that deals with the study of all living things
  • Artificial classification in biology uses characteristics to identify and group organisms
  • Natural organization in biology emerges from evolutionary relationships
  • The purpose of taxonomy in biology is to understand and classify living organisms
  • Humans are considered as Homo sapiens
  • The correct order of taxonomy for modern humans is: Domain: Eukarya, Kingdom: Animalia, Phylum: Chordata, Class: Mammalia, Order: Primates, Family: Hominidae, Genus: Homo, Species: Homo sapiens
  • The taxonomic level that includes ONLY Homo sapiens (modern day humans) is Species

Homeostasis

  • Homeostasis is the maintenance of a constant internal environment
  • In humans, body warmth is maintained through homeostasis
  • The meaning of 'homeostasis' in Greek is "remaining the same"

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Description

Test your knowledge of biology with this quiz on the characteristics of life. Explore the fundamental concepts that define living organisms and their organization. See how well you understand the key elements that distinguish living things from non-living entities.

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