What. Is the smallest level of organization ?
A cell.
What is a cell membrane?
An external boundary around a cell
What is an organism?
A complete living thing
What is a life span?
The process of birth,life,& death
What is an environment ?
The surroundings or conditions in which a person,animal or plant operates
What is energy?
The ability to work.
What r tissues ?
A group of cells working together
What is a cell
The smallest unit of a living organism
Building block of all organisms
Filled with organells & contains DNA
What is the cell theory
A theory stating that all living things are made of cells and that the cell is the smallest form of life also that cells come from cells
What is the definition of unicellular ?
A term used describing an organism consisting of one cell
What is multicellular ?
A term used to describe an organism consisting of more than one cell
What is an organ?
To or more tissues that work together to perform a specific function
What is a system?
A group of organisms working together
What r the characteristics of life?
Living things are made of cells Grow& reproduce Respond after their own kind Respond to stimulus in environment Use energy
The organization of organisms:
- smallest level is a cell
Then tissues
Then organs
Then systems
What are cells made of?
Organelles which perform jobs
What is a cell like?
A city
What is a cell membrane?
An external boundary
Made of lipid and protein
Controls what goes in and out of the cell
What is a cytoplasm?
A jelly like substance
Madeout. Of water,glucose,fat and other substances
Fills and surrounds organells
Nucleus
The largest organelle
Like a control center
Contains all DNA
Has a nucleus membrane
Nuclear pore
Protein in the nuclear membrane
Allows some things to enter the cell
Chromosome
Tiny bundle of DNA
Mitochondria
Produces and releases energy
The energy is glucose
Endoplasm Reticulum
System of passage ways
Allow materials to go from one part of a cell to the next
There are two types of ER-rough and smooth
What is the rough er?
An organelle called ribosomes attached to it
What does rough re and soft er have
Smooth er has no ribosomes
Rough er will be found attached to the nucleus
Vacuole
Storage center for food water and waste
Lysosomes
Helps fight pathogens
Helps digest and recycle old cell parts and food
Cytoskeleton
Gives the cell support
Made of micro tubes which are hollow protein tubes
Chloroplasts
Produces sugar
Cell wall
Extra membrane
Found outside the cell membrane
A rigid support system
The largest organelle in the plant is a vacuole
Golgi apparatus
Creates and packages materials to be shipped out side the cell
Secretory vesicles are “shipped”
Cillia
Helps the cell move
Tiny hair
Flagellum
Whips back and forth&helps the cell move
A hair like structure