Characteristics of life

Organized

All living things are

A cell

The simplest level at which life exists

No

Are all cells alike

Functions

All cells perform various jobs or

Organism

The scientific term for a living thing

plasma membrane

Surrounds a cell and separates it from its enviorment

Unicellular- has only one cell
Multicellular- has many cells

What is the difference between unicellular and multicellular

Multicellular- People, animals
Unicellular- Bacteria, amoeba

What are some examples of multicellular and unicellular organisms

Tissues, organs, and systems

Multicellular organisms can be organized into what other levels

The production of offspring

Define reproduction

No, because the individual does not have to reproduce but the species does

Must every member of a particular species be able to reproduce in order for the species to survive

They would go extinct

What would happen if all individuals in a species were sterile

Organisms, Species

Reproduction is not essential for the survival of an individual, but not essential for the survival of the

It no longer exists

What does extinction mean

Asexual- Requires one cell (Identical)
Sexual- Requires two cells (Sperm and egg)

Name and define the two types of reproduction

As a single cell

How do all organisms begin life

Growth- Increase in the amount of living material and increase of new life structure
Development- Changes that take place during our life time

What is the difference between growth and development

Yes they do grow but they do not develop

Do unicellular organisms grow and develop

Yes and yes

Do multicellular organisms grow and develop

A nonliving thing does not grow by producing more cells, it just adds more material to the outside.

How is the growth of a living thing different from the grown of a nonliving thing

The ability to make things change

Define energy

Energy helps organisms maintain balance, grow, reproduce, and carry out other life forms

Why is energy important to a living life form

Heterotroph-eat to obtain energy
Autotroph- take in sunlight

What is the difference between an autotroph and heretoroph

Photosynthesis

What is the process that plants use to make there own food using energy from the sun

air, water, weather, temperature

What are some enviormental factors that organisms respond too

Environmental

Organisms must respond to______factors in order to stay healthy and survuve

Nutrients and body regulations

What are two internal factors that organisms respond to

Keeping something stable like your body temperature

Describe homeostasis

Growth

That boy shot up five inches in one year

Reproduction

Our cat had a litter of kittens yesterday

Development

My dog has become much less clumsy now that he is a year old

Energy

Eat a good breakfast and you will be able to run longer

Irritabillity/Response

When the car ran up the driveway, my cat ran to hid under the porch

Adaptation

The owl's night vision allows it to see the movement of mice on even the darkest nights

Unicellular

Single-celled organisms live in the pond behind the school

Homeostasis

Your body normally maintains a temperature of 98.6

Evolution

A giraffe uses its neck to eat from the high branches of a tree

Organism

is another name for a living thing

Biology

The study of life

Homeostasis
Reproduction
DNA/Heredity
Irritabiliry/Response
Matter/Energy
Metabolism
Made of cells
Growth/Development
Evolution
Organized
Adaptation

List all the characteristics of all living things

Nonliving
Atoms
Molecules
Macro Molecules
Living
Cell
Tissues
Organs
Organ systems
Organisms
Population
Community
Ecosystem
Biome
Buosphere

Levels of orginization

Atom/Molecule

Smallest part of an element or compound

Organ

A group of simular tissues working together like the heart of lungs

Population

A group of one kind of organism living in an area

Cell

Smallest level at which life exists

Organelle

Parts of a cell such as the nucleus

Community

Several populations of organisms living tigether

Tissue

Group of simular cells working together

Organism

A living thing that may be unicellular or muliticellular