biology 1 - key words Flashcards
active transport
the movement of particles against a concentration gradient, using energy from respiration
diffusion
the movement of particles from a high concentration to a low concentration across a cell membrane
meristem
source of stem cells in plants found in the growing parts of the plant
osmosis
the movement of water from a high concentration to a low concentration
how do you calculate ‘total microscope magnification’?
eyepiece lens x objective lens = total microscope magnification
stem cell
unspecialised cells that can develop into any other type of cell
ribosomes (plant,animal, or both?)
where proteins are made in a cell
«both»
vacuole (plant,animal, or both?)
where cell sap is found in plant cells
helps with water movement
mitochondria (plant,animal, or both?)
where energy is generated during aerobic respiration
«both»
nucleus (plant,animal, or both?)
the control centre of the cell
where the genes are found
«both»
cell membrane (plant,animal, or both?)
controls what passes in and out of a cell
«both»
chloroplasts (plant,animal, or both?)
where photosynthesis takes place
«plant»
cytoplasm (plant,animal, or both?)
where the chemical reactions that keep the cell alive takes place
allows transport
provides structure
host to metabolic processes
«both»
cell wall (plant,animal, or both?)
structure and support
separates interior from exterior
made of cellulose
«plant»
respiration
chemical reaction that takes place in living cells, releasing energy for the cell
