Cells Flashcards
What does the mitochondria do?
Supplies the cell with energy
What components are in both animal and plant cells?
Nucleus, Cell Membrane, Mitochondria, Cytoplasm
What structures are unique to plant cells?
Chloroplasts, Vacuole, Cell Wall
What is the function of the nucleus?
Controlling Cell Activity and storing DNA
What is the function of the cytoplasm?
Where reactions occur
What is the cell wall made from?
Cellulose
What does the cell wall in plant cells do?
Supports the cell and helps maintain it’s shape
What chemical is used for photosynthesis?
Chlorophyll
What is a specialized cell?
A cell with a specific function, e.g. root hair cell or nerve cell
How are root hair cells adapted to their function?
Large surface area, thin walls
Which cell type do bacteria have?
Prokaryotic, no nucleus
What cell type do animals and plants have?
Eukaryotic, has nucleus
What is diffusion?
Particles moving from high to low concentration - untill all particles are spread out (according to tim, probably correct)
What is osmosis?
Water moving from high to low concentration
What is Active Transport?
Particles moving from low to high concentration, requires energy
What do enzymes do?
Helps reactions; builds large molecules from smaller ones and breaks large molecules into smaller ones
What food group is used to make enzymes?
Proteins
Which type of microscope has the highest magnification?
Electron microscopes
What is the formula for magnification?
size of image
magnification = —————————
size of object
or
size of image/size of object = magnification
What does a light microscope use?
Light
What factors affect diffusion?
Temperature, Concentration Gradient, Surface area
What is the purpose of the Vacuole?
Keeps cell rigid
What is visking tubing?
Selectively permeable membrane
What is the resolving power?
The smallest size a microscope can show`
What is the function of ribosomes?
Makes proteins
What is the name of the part of the enzyme that fits with the substrate?
The active site
What does ‘Lock & Key’ mean?
A stylized diagram of enzyme/substrate reactions
