Ch. 1 Biology - The Study of Life Flashcards
**What is biology?
The study of life.
What is a key aspect of biology?
Simply learning about the different types of living things around you. Biologists have not yet answered all the questions about life.
What will you ask when studying the different types of living things?
What, why and how questions about life.
Why do biologists study the interactions of life?
Living things do not exist in isolation; they are all functioning parts in the balance of nature.
Biologists study the __________ of life.
Diversity.
Biologists study the __________ of the environment.
Interactions.
When studying living things, a biologist must study -
All shelving (biotic) and non-living (abiotic) things to get a thorough understanding of nature.
**What is an organism?
Anything that possesses all of the characteristics of life.
**What are the characteristics of living things?
- Have an orderly structure. 2. All organisms need a source of energy to carry out life processes. 3. Adjust to changes in the environment. 4. Produce offspring. 5. All levels of life have systems of related parts. 6. Organisms must maintain homeostasis to survive in diverse environments. 7. Living things adapt and evolve.
How do living things have an orderly structure?
How do living things have an orderly structure?
Why is it important for organisms to have a source of energy?
Energy is important for metabolism or all chemical processes that build up or break down materials.
How must organisms adjust to changes in the environment?
- Organisms must be able to respond to stimuli in their environment. 2. They must be able to react to their environment to survive. 3. Light, temperature and touch are just a few of the physical factors called stimuli, to which organisms must respond.
Why is producing offspring important?
Living things are able to reproduce. Reproduction is not essential for the survival of an individual but it is essential for the continuation of the organism’s species.
All organisms have _______ that they pass on to offspring.
DNA
_______ = a group of organisms that can interbreed and produce fertile offspring.
Specie.
All levels of life have systems of related parts. What is a system?
An organized group of interacting parts.
**A cell is?
A system of chemicals and processes.
A body system?
Includes organs that interact.
**Organisms must maintain homeostasis to survive in diverse environments. What is homeostasis?
The maintenance of constant internal conditions and is usually maintained through negative feedback.
**____ ____ systems return a conditions to its normal (set) point.
Negative feedback.
What is adaptation?
Any inherited structure, behavior or internal process that enables an organism to respond to environmental factors and live to produce offspring.
**What is evolution?
The gradual change in a species over time.
Ch. 1.2 Points are?
- Have organization, 2. metabolism, 3. adjust to stimuli, 4. reproduce, 5. organized system, 6. maintain homeostasis, 7. adapt/evolve.
**What is science?
Observing the world. Observing and recording.
**What is an organism?
An individual animal, plant or single cell life form.
** What is metabolism?
The chemical reactions that take place in the body’s cells in order to maintain life. E.g., converting food to energy.