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Review this flashcards to prepare for your quiz on characteristics of life and themes of Biology

Bio means:

Life or living

Ology means:

The study of


The study of life


Any living thing

What are the 8 characteristics of life?

1. Homeostasis
2. Made of cells
3. Evolve
4. Responsiveness
5. Growth
6. Reproduction
7. Metabolism
8. Have DNA


Combination of chemical reactions through which an organism builds up or breaks down materials.


Smallest unit of structure and function in living things.


Single-cell organisms
Do not have a nucleus
Example(s): bacteria


Single cell or multi-celled organisms
Have a nucleus
Example(s): any cell other than a bacteria cell - blood cell, paramecium, amoeba, plant cell, bone cell.


Molecule in which organisms store the complex information they need to live, grow, and reproduce.


Change over time


Change occurs in organisms because of genetic _______________________ (changes in DNA) which can make them more or less adapted to the environment.


Organisms respond to their environment and adapt (or adjust) to the conditions.


Signal to which an organism responds


Process by which organisms make more of their own kind

Asexual Reproduction

A single parent passes copies of all its genes to each of its offspring.

Example of an organism that does asexual reproduction

Bacteria, protist, hydra


An increase in the size or number of cells


Basic unit of life, capable of performing life functions.

All living organisms are made up of one or more _________.



A regulatory process in which an organism regulates its internal environment. Maintaining stable internal conditions by regulating water, temperature, salt, sugar, etc.


The cause of death of an organism is always the loss of ________________.

Sexual reproduction

Two parents form reproductive cells and cells are combined.

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