Cell Biology Flashcards
function of ribosomes
site of protein synthesis
what is osmosis
the movement of water molecules through a selectively permeable membrane from an area of higher concentration to an area of lower concentration
what is active transport
the movement of particles across a membrane against a concentration gradient
define selectively permeable
some substances are let through but others are not
what is diffusion
the movement of particles from an area of a higher concentration to an area of lower concentration
what is meant by the term plasmolysed
when a cell shrinks/shrivels as a result of osmosis
what is meant by the term turgid
when a cell swells/bursts due to osmosis
what is glucose broken down into during aerobic respiration
pyruvate
what is fermentation
the type of respiration that doesnt require oxygen
is lactate produced in animals or plant
animals
what is the word equation for aerobic respiration
glucose + oxygen –> carbon dioxide + water + energy
what is the function of the cell membrane
to control what enters and exits the cell
what is the role of the vacuole
stores sap
what is the cell wall made from
cellulose
what is the function of the nucleus
contains genetic material which controls the activities of the cell