cell biology Flashcards
what is a uni cellular organism?
a uni cellular organism is a singular cell
what is a multi cellular organism
a multi cellular organism is an organism made up of many cells
what is an ultra structure of a cell
the ultra structure of a cell is its fine structure as revealed at high magnifacation
What is an ultrastructure of an animal cell?
the ultra structure of an animal cell includes its cell membrane, nucleus, cytoplasm, mitochondria and ribosomes.
what is the ultra structure of a plant cell?
the ultrastructure of a plant cell includes its cell membrane, nucleus, cell wall, cytoplasm, sap vacule, mitochondria and ribosomes.
where are chloroplasts present?
Chloroplasts are present in green plant cells
What is the ultra structure of a bacterial cell
The ultra structure of a bacterial cell is its cell wall, cell membrane, cytoplasm, plasmids and ribosome
what is the ultra structure of a fungal cell
The ultra structure of a fungal cell includes its cell wall, cell membrane, nucleus, cytoplasm, vaculoe, mitochondria and ribosomes
what does the nucleus do?
the nucleus contains genetic information (DNA) and controls most cell activity
what does the cell membrane do?
the cell membrane controls the entry and exit of substances in and out of a cell
what is a cell organelle
cell organelles ( nuclei, mitochondria and chloroplasts) are compartments found in the cytoplasm and are the site of chemical reactions
what cell does organelles not appear in
organelles are not in bacterial cells
what is the cell wall
The cell wall is for support and shape and prevents plant cells from bursting
what cells have diffrent cell walls
plant, fungal and bacterial cell walls have different structures and are composed of different chemicals
what is a sap vacule?
The vacuole stores a watery solution of salts and sugars and helps support the cell
what is a chloroplast?
Chloroplasts contain chlorophyll and is the site of photosynthesis
what is a mitochondria
Mitochondria are the sites of aerobic respiration
what is a ribosome?
Ribosomes are the sites of protein synthesis
what is different about a bacterial cell?
plasmids are present in bacterial cells, plasmids hold some of the genetic information (DNA)
what are living organisms and cells?
The bodies of living organisms are made up of cells. Living organisms are either uni cellular or multi cellular. Organisms can be divided into groups. These include animal, plants, fungi and bacterial.
animal cell
animal cells are surrounded by a cell membrane and contain a nucleus, ribosomes and mitochondria
Plant cells
Plant cells have a cell wall, (cellulose) cell membrane, nucleus, cytoplasm, vacuole, ribosomes mitochondria and green plant cells have chloroplasts
Fungal cells
Fungal cells have a cell membrane, cell wall, vacuole, nucleus, ribosomes, nucleus and mitochondria
Bacterial cells
Bacterial cells have a cell wall, membrane, cytoplasm, plasmids and ribosomes but no organelles
aerobic respiration
aerobic respiration is the release of energy from food by a cell using oxygen
Bacterial cell definition
a tiny individual cell of a bacterium
cellulose
Structural carbohydrate if which plant cells are composed
staining cells
cell ultrastructures can appear transparent under the microscope so stains are used to make cell structures more obvious by making them darker. iodine soloution and methlyne blue are examples of stains
cell word equation
cells-tissues-organs- systems
chromosome structure
in animal, plant and fungal cells the chromosomes are linear- straight
