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23 terms

Characteristics of Life and Themes of Biology (Ch.1 Section 1)

Review this flashcards to prepare for your quiz on characteristics of life and themes of Biology
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Bio means:
Life or living
Ology means:
The study of
Biology
The study of life
Organism
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
Metabolism
Combination of chemical reactions through which an organism builds up or breaks down materials.
Cells
Smallest unit of structure and function in living things.
Prokaryotes
Single-cell organisms
Do not have a nucleus
Example(s): bacteria
Eukaryotes
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.
DNA
Molecule in which organisms store the complex information they need to live, grow, and reproduce.
Evolution
Change over time
Mutations
Change occurs in organisms because of genetic _______________________ (changes in DNA) which can make them more or less adapted to the environment.
Responsiveness
Organisms respond to their environment and adapt (or adjust) to the conditions.
Stimulus
Signal to which an organism responds
Reproduction
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
Growth
An increase in the size or number of cells
Cells
Basic unit of life, capable of performing life functions.
All living organisms are made up of one or more _________.
Cells
Homeostasis
A regulatory process in which an organism regulates its internal environment. Maintaining stable internal conditions by regulating water, temperature, salt, sugar, etc.
Homeostasis
The cause of death of an organism is always the loss of ________________.
Sexual reproduction
Two parents form reproductive cells and cells are combined.