cell biology Flashcards
adult stem cell
a type of cell that can form meny types of cells
agar jelly
a substance placed in a petri dishes which is used to culture microorganisms on
cell differentiation
the process where a cell becomes specialised to its function
cell membrane
a partially permeable barrier that surrounds the cell
cell wall
an outer layer made of cellulose that strengthens plant cells
chloroplast
an organelle which is the site of photosynthesis
chromosomes
DNA structures that are found in the nucleus which are made up of genes
concentration gradient
the difference in the concentration between two areas
diffusion
the movement of particles from an area of hight concentration to an area of low concentration
embryonic stem cells
a type of stem cell that can differentiate into most types of human cells
eukaryotic cell
a type of cell found in plants and animals that contains a nucleus
magnification
how much bigger an image appears compared to the original object
meristematic cells
a type of stem cell that can differentiate into any type of plant cell
mitochondria
an organelle which is the site of respiration
mitosis
a type of cell division which produces two genetically identical daughter calls from one parent cell
nucleus
an organelle found in most eukaryotic cells that contains the genetic material of the cell and controls the activities of the cell
organelle
a specialised structure found inside a cell
osmosis
the diffusion of water from a dilute solution to a concentrated solution through a partially permeable membrane
plasmid
loops of DNA found in the cytoplasm of a prokaryotic cell
plasmid
loops of DNA found in the cytoplasm of a prokaryotic cell
prokaryotic cell
a type of cell
prokaryotic cell
a type of cell found in bacteria that doesn’t contain a nucleus
resolution
the ability to distinguish two different points in a specimen
specialised cells
cells that are adapted to preform a specific function
