Cells
No description yet. This curated deck is ready for daily study.
Card preview (24)
What are cells?
Cells are the smallest units of life and are what make up organisms.
what is a unicellular organism?
an organism made with only one cell
what is a multicellular organism?
A living thing that is made up of multiple cells.
name 3 organisms that are unicellular
• yeast • amoeba • bacteria
What are the levels of organisation?
cells -> tissue -> organ -> organ system -> organism
What is tissue?
A group of cells that are joined together
What are some key differences between plants and animals?
The plants have a larger vacuole and animals can drink water. Plants have a cell wall which acts as the bone structure that animals have. Animals can eat food to receive their nutrients whereas plants use photosynthesis.
What does a plant cell consist of?
Cell wall, cell membrane, ribosomes, vacuole, mitochondrium, smooth er, rough er, nucleus, golgi body, chloroplast and cytoplasm.
cytoplasm/cytosol function
Jelly-like liquid that fills the cell and holds the components of the cell while protecting them from damage too.
Cell membrane function
it is the boundary of the cell
cell wall function
provides protection and strength for the cell. It allows substances to pass in and out.
nucleus function
contains DNA and controls cell activity
Chloroplast function
uses light and carbon dioxide to make sugar
mitochondrion function
Use sugar to create energy packets for the cell
Vacuole function
To store fluids, nutrients and waste
What is photosynthesis?
The process of converting water and carbon dioxide to nutrients using sunlight
Which organelle does a plant store water in? Why do they need to store water?
Vacuoles are what plants store water in so they can stay alive during dry weather or when they can’t get access to the liquid they need.
Which organelle makes a plant stand upright, rigid and strong?
Plants are able to stand upright because of an organelle called the ‘cell wall’ which gives structure to the plant like the skeletal system does for animals.
smooth er function
creates & stores lipids
rough er
synthesises proteins and sends it to Golgi Apparatus
golgi body/apparatus function
To modifies, sorts and packages protein and lipids for transport.
In multi-cellular organisms…
cells work together to perform specific functions necessary for life.
All cells are the same, TRUE OR FALSE
FALSE
What is a specialised cell?
A specialised cell has a unique structure which allows the cell to have unique functions