Biology Life Characteristics Quiz

Questions and Answers

Which of the following correctly describes homeostasis?

The process of reproduction among organisms

The gradual change of species over time

The reaction to external stimuli by living organisms

The ability to maintain steady internal conditions despite external changes (correct)

Which of the following best defines growth in biological terms?

The accumulation of adaptations in a species

The ability of an organism to reproduce and generate offspring

The structure that allows responses to stimuli

The gradual increase in size and shape over time (correct)

What is the primary distinction between unicellular and multicellular organisms?

Only multicellular organisms can perform homeostasis.

Unicellular organisms can reproduce; multicellular cannot.

Unicellular organisms consist of one cell; multicellular consist of two or more cells. (correct)

Unicellular organisms lack internal structures while multicellular have tissues.

In biological organization, what level of structure comes after tissues?

Organs Signup and view all the answers

Which statement accurately describes adaptation in an organism?

A trait that enhances an organism's ability to survive in its environment. Signup and view all the answers

What term describes the gradual accumulation of adaptations over time within a species?

Evolution Signup and view all the answers

What is the primary function of energy in biological systems?

To enable work Signup and view all the answers

Which of the following correctly describes the concept of organization in the biological structure of organisms?

The arrangement of cells into tissues, organs, and organ systems Signup and view all the answers

In the context of biological responses, what is a stimulus?

Any change in an organism's environment Signup and view all the answers

What distinguishes a species in biological terms?

A group of organisms that can produce fertile offspring Signup and view all the answers

Study Notes

Biology Overview

Study of life is known as biology.
Living organisms exhibit various characteristics, distinguishing them from non-living entities.

Characteristics of Living Organisms

Multicellular: Organisms composed of two or more cells.
Homeostasis: Regulation of internal conditions to adapt to external environments.
Reproduction: All species can produce offspring.
Adaptation: Structures or behaviors that improve survival in an environment.

Organism and Environment

Environment: Surroundings of an organism that can affect its life.
Development: Process of changing to the final adult form.

Cellular and Organ Structural Levels

Unicellular: Organisms consisting of only one cell.
Organizational Hierarchy: In organisms, organs are arranged into organ systems.
Cells: The smallest and most basic unit of life.
Tissues: Structures that flow through cells, forming part of organs.

Biological Processes

Energy: The ability to perform work.
Growth: Increase in size and shape over time.
Stimulus: A condition in the environment prompting an adjustment by the organism.
Response: An organism's reaction to a stimulus.

Species and Evolution

Species: A group of organisms capable of producing fertile offspring.
Organization: Each organism has an orderly and defined structure.
Evolution: Gradual accumulation of adaptations over time leading to species changes.