Multicellular
What is a multicellular organism?
An organism containing many cells to perform life functions.
What is a unicellular organism?
An organism that contains only one cell to perform life functions.
What are microscopes and what are they used for?
Tools to magnify tiny objects so they can be seen
What is the basic structural, functional and biological unit of all living things?
A cell
What are are Organ Systems?
Group of organs that work together.
Give 5 examples of multicellular organisms
Humans, Cats, Dogs, Cows, Chicken, Trees, Horse, Animals, Plants, Fungi
What do unicellular organisms use to take in nutrients and gases such as oxygen?
Cell Membrane
What is the term we use to describe the cells, tissue, or organism being studied with a microscope?
Specimen
Is a cell tiny or big?
Tiny (cannot be seen with the naked eye)
What are organelles?
Subcellular strucure that has one or more jobs to perform in the cell.
Why are multicellular organisms more complex than unicellular organisms?
They are made up of different types of specialized cells that carry out different functions.
What are organelles inside of a cell?
Structures
What are three major types of microscopes?
Dissecting, Light, and Electron
What can a cell only be seen with?
A mircroscope
What is a cell membrane?
Seperates the interior of all cells from its environment.
What do multicellular organisms use to ro rid their bodies of waste?
Excretory
What do unicellular organisms use to transport substances throughout them?
Cytoplasm
Are Electron Microscopes used to magnify a 2D or 3D specimen?
Both
Why did the person who discovered cells call them cells?
They resembled the cells lived in by Christian monks in a monastery.
What is the digestive system?
Used to take in and digest nutrients.
What do multicellular organisms use to help them move throughout the environment?
Skeletal and Muscular System
What are the hair-like projections on the outside of the cell?
Cilia and Flagellum
On a Light Microscope, where is the light source located?
Below the diaphragm
Who were cells discovered by and when were they discovered?
Discovered by scientist Robert Hooke in 1665
What is the circulatory system?
Used for transporting substances throughout their bodies.