Biology Chapter 1: Characteristics of Life

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

The branch of science that studies life is:

Physiology

Morphology

Taxonomy

Biology (correct)

Humans, like all other multicellular organisms, grow by:

Increasing the number of existing cells

Increasing the size of existing cells

Increasing the amount of non-cellular material around cells

All of the above (correct)

The defining features of living organisms respond to their environment:

Development, growth and reproduction

Sensitivity (correct)

Adaptation

Organization

Maintenance of internal favorable conditions despite changes in the external environment is:

Homeostasis Signup and view all the answers

Example of thermoregulation:

Sweat Signup and view all the answers

All chemical reactions that occur in the cells of an organism are called:

Metabolism Signup and view all the answers

Metabolism is:

Gain and release energy Signup and view all the answers

Catabolism is:

Release energy Signup and view all the answers

Example of anabolism:

Photosynthesis Signup and view all the answers

Which of the following best describes a population?

Group of individuals of the same species living in the same area Signup and view all the answers

Which of the following statements is false?

Communities exist within populations which exist within ecosystems Signup and view all the answers

Deoxyribonucleic acid (DNA) is:

Macromolecule Signup and view all the answers

Which cell group does not possess a true nucleus?

Prokaryotes Signup and view all the answers

Single-celled prokaryotes are included in:

All of the above Signup and view all the answers

The source of the diversity of life is:

Evolution Signup and view all the answers

Species is:

Specific unit of evolution Signup and view all the answers

The domain of life is recognized as:

All of the above Signup and view all the answers

The purpose of taxonomy or classification is:

Facilitate the identification of unknown species Signup and view all the answers

First act in taxonomy is:

Naming Signup and view all the answers

According to Carl Linnaeus, the highest level of the hierarchical system of taxonomy is:

Domain Signup and view all the answers

Which covers the largest number of organisms?

Phylum/Division Signup and view all the answers

The generic 'genus' name of Mango is:

Mangifera Signup and view all the answers

According to Carl Linnaeus, the lowest hierarchical category is:

Species Signup and view all the answers

Study Notes

Chapter 1: Characteristics of Life

Biology is the branch of science that studies life.
Organization is a defining feature of living organisms, consisting of many levels of organization starting with atoms and building up to cells, tissues, organs, organ systems, and finally the organism itself.
Sensitivity is another defining characteristic of living organisms - they respond to stimuli in their environment.
Growth is the increase in body size and is achieved by increasing the number and size of cells, as well as the amount of non-cellular material.
Development includes all changes an organism undergoes throughout its life, specifically all changes from one stage to another in the life cycle.
Reproduction is the process by which living organisms produce new individuals.
Adaptation is a defining feature of living organisms, a characteristic that allows survival in a particular environment.
Regulation is the ability of living organisms to maintain a stable internal environment (homeostasis) despite changes in the external environment.
Energy processing describes how living organisms use energy for growth, movement, and all other life processes.
Homeostasis is the maintenance of stable internal conditions despite external changes, achieved through various mechanisms such as thermoregulation (e.g., sweating).
Metabolism refers to all chemical reactions that occur within a cell. These reactions can be categorized as either catabolic (breaking down molecules) or anabolic (building up molecules).
Catabolism is the breakdown of complex molecules into simpler ones, releasing energy in the process.
Anabolism is the building up of complex molecules from simpler ones, requiring energy input.
Cells are the fundamental units of structure and function in living things.
Prokaryotes are a group of single-celled organisms that lack a true nucleus.
Eukaryotes are a group of organisms that do have a true nucleus.
Tissues are made up of groups of similar cells that work together to perform a specific function.
Organs are made up of different tissues working together to carry out a more complex function.
Organ systems consist of multiple organs that work together to perform a particular bodily function.
Organisms consist of multiple organ systems working together.
Population is a group of individuals of the same species living in the same area.
Community is a group of different populations living together in the same area.
Ecosystem includes all living organisms (the biotic component) and their nonliving environment (the abiotic component), such as soil, water, and sunlight.
Biosphere encompasses all ecosystems on Earth.
Evolution is the source of the diversity of life, a process by which populations change over time, with adaptations aiding in survival.
Species is a group of organisms that can interbreed and produce fertile offspring.
Domain is a taxonomic classification that includes three domains: Eukarya, Bacteria, and Archaea.
Eukarya includes multicellular organisms like plants, animals, and fungi, as well as single-celled protists.
Bacteria and Archaea are both prokaryotes and represent single-celled organisms.
Taxonomy is the branch of biology concerned with naming, identifying, and classifying organisms.
Nomenclature is the system of assigning scientific names to organisms.
Binomial nomenclature, introduced by Linnaeus, uses two words to name each species: the genus name (always capitalized) and the species name (not capitalized).
Hierarchical classification is a system of classifying organisms in a series of increasingly inclusive categories.
Taxonomic hierarchy includes these major levels: Domain, Kingdom, Phylum/Division, Class, Order, Family, Genus, Species.
Species is the fundamental unit of classification.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

Explore the fundamental characteristics that define living organisms in this quiz based on the first chapter of biology. Test your knowledge on organization, sensitivity, growth, development, reproduction, adaptation, and regulation. Perfect for students looking to deepen their understanding of life science!