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

Created by ejpoff 

Upgrade to
remove ads

39 terms · 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

Biology

The study of life

Organism

Any living thing

What are the 7 characteristics of life?

1. Movement
2. Excretion
3. Respiration
4. Responsiveness
5. Growth
6. Reproduction
7. Nutrition

Nutrition

The process by which an organism absorbs "foods" to carry out life functions.

Respiration

The process that changes food into energy that can be used by our cells and our body.

Movement

Physical motion, going from one place to another.

Example of Movement

Materials moving through your cells and your body.

Respondsiveness

Organism respond to their environment and adapt to conditions. If they cannot adapt they will not survive.

Examples of Respondsiveness

1. Skin tans
2. Sweating when we are hot

Excretion

Getting rid of wastes.

Examples of excretion

1. Sweating
2. Urination
3. Defecation
4. Exocytosis by cells
5. Salt excretion in plants

Growth

Increase in the number or size of cells.

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

What are the 7 themes of Biology?

1. Structure and Function
2. Homeostasis
3. Evolution
4. Reproduction
5. Heredity
6. Interdependence
7. Metabolism

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.

Homeostatic Mechanism

A regulatory mechanism that contributes to maintaining a state of equilibrium.

Thermoregulation

Maintaing constant temperature.

Water regulation

Maintaining constant water levels in the body

Oxygen regulation

Maintaining constant oxygen levels in the body.

Mechanism

The combination of components and processes that serve a common function

Evolution

Change in a species over time.

Evolution occurs through:

Natural Selection and mutations

Natural Selection

The best adapted organisms will survive and reproduce.

Mutation

Changes in DNA

Species

A group of genetically similar organisms that can produce fertile offspring.

Example of a species

Humans (Homo sapiens)

Heredity

Passing of traits from parents to offspring

DNA

Molecule that carries genetic information about our traits.

Gene

Short segment of DNA that codes for a specific protein (trait)/

Interdependence

Organisms in a biological community live and interact with other organisms. Organisms are dependent on one another.

How are humans affecting interdependence of organisms?

Cutting down rainforests, which destroys the natural habitat of many organisms.

Ecology

Branch of Biology that studies the interactions of organisms with one another and their environment.

Metabolism

Process in which organisms carry out many chemical reactions to get energy.

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

Star this term

You can study starred terms together

NEW! Voice Recording

Create Set