Cell Specialization and Organization
organisms with only a single cell.
Unicellular organisms
what is Microscopes
devices that magnify tiny objects so they can be observed
The most common substance found inside and around cells is?
water
Every single cell has a......
specific function that they need to perform in order to keep it alive.
where do Plants get their energy?
the sun
what do Different cells have?
different appearances and perform different jobs. In other words, they are specialized to perform their specific functions.
what is the eyepiece on a microscope?
the part you look through. it has a lens that zooms in on the object.
what does Diffusion do?
plays a part in moving substances into and out of cells.
what are the basic structures inside of cell
organelles
where do animals get their energy?
the food they consume
unicellular organisms cannot...
grow very large
what is Magnification
the process by which objects are made to appear larger than they actually are
Water particles are....
small and can easily move into and out of cells by diffusion.
surrounds and protects the contents of the cell.
Cell Membrane
what do Plants consume?
carbon dioxide
A multicellular organism has...
many different kinds of cells, organized in a way to allow them to do their job
the scientists determined two key things about microscopes what were they?
All living things are made of one or more cells
Cells are the basic units of life
what does the structure of the cell membrane control?
what can move into and out of a cell.
organisms with many different cells, like human beings.
Multicellular organisms
what are the 5 characteristics of Life
Need energy to survive
Respond and adapt to their environment
Reproduce
Grow and develop
Produce waste products
Cells with the same structure and functions are....
grouped into tissue
when was the first electron microscope built?
1932
what is the cell membrane is said to be?
selectively permeable, meaning it only allows certain materials to pass through, but not all materials.
organisms with only one kind of cell, like a euglena (commonly found in ponds)
Unicellular organisms
what is a system made out of?
they are made of organs. Organs are made of tissues and tissues are made of cells