Question and answers rated A+
2025/2026
What is biology - correct answer ✔The study of life
List and describe the characteristics of life - correct answer ✔All living things:
1) Are made up of cells *
2) Have different levels of organization
3) Obtain and convert energy from environment
*4) Respond to their environment
*5) Get larger and more complex throughout life
6) Reproduce
*7) Adapt to their environment; Homeostasis *
Describe the major divisions of life - correct answer ✔-Domain
--Kingdom
---Phyla
----Class
-----Order
------Family
-------Genus
--------Species*Each category is a taxon
List and describe the levels of biological organization - correct answer ✔Atom, molecule, cell, tissue,
organ, organ systems, organism, population, community, ecosystem and biosphere
, Atom - correct answer ✔fundamental building block of all matter
Molecule - correct answer ✔two or more atoms held together by covalent bonds
Cell - correct answer ✔Basic unit of life; smallest unit of life
Tissue - correct answer ✔Specialized cells organized in a pattern
Organ - correct answer ✔a group of tissues working together
Organ systems - correct answer ✔A group of two or more organs working together for a specific job;
e.g. the digestive system
Organism - correct answer ✔Individual that consists of of one or more cells
Population - correct answer ✔Grouping of the same species
Community - correct answer ✔All populations of all species in a given area; looks at interaction
between the species
Ecosystem - correct answer ✔All biotic and abiotic things; a community interacting with its
environment
Biosphere - correct answer ✔All ecosystems on the planet*Gaia Theory: planet is one big organism