Cells Flashcards
What is a cell?
The smallest unit of life
All living things are made of cells. Most cells are too small to see with the naked eye.
What is cell division?
The splitting of a cell to form new cells
All cells come from pre-existing cells. Cell division allows organisms to grow and reproduce.
What is a cell membrane?
A thin layer that forms the boundary of a cell
The cell membrane holds the cell contents in and controls which substances pass in and out.
What is a cell wall?
A rigid structure that protects and strengthens some cells
Plant cells have cell walls around their cell membranes. Animal cells* do not have cell walls.
What is Chlorophyll? and where is it found?
The green substance in plant cells that absorbs sunlight
Chlorophyll is located in chloroplasts and it traps the energy needed for photosynthesis.
What is a Chloroplast?
An **organelle **that absorbs sunlight energy and stores it in sugars
Chloroplasts carry out photosynthesis in some plant cells. They are not found in animal cells.
What is Cytosol? and where is it found?
A jelly-like fluid that fills the space inside a cell
Small structures called organelles float in the cytosol.
What is Cytosol? and where is it found?
A jelly-like fluid that fills the space inside a cell
Small structures called organelles float in the cytosol.
What is a fat cell?
A large cell that stores excess energy from food
Fat cells store energy as droplets of fat that can later be used by the body.
What is a intestinal lining cell?
A cell with finger-like structures that help it absorb water
Intestinal lining cells have a large surface area to absorb water from half-digested food.
