Area of study 1 Cells Flashcards
Cell Specialisation
Cells of multicellular organisms are often specialised to form particular functions.
Cell theory
The theory that all living things are composed of cell or the products of cells and that cells are the basic unit of life.
Cellular Respiration
The enzymic process by which the energy of carbohydrates, fatty acids and amino acids (derived from food or from photosynthesis) are converted into carbon dioxide, water and energy.
C6H12O6+6O2=6CO2+6H2O+36ATP
Cellulose
The chemical composition of the cell wall of plants
Centrioles
Two rod-like structures made of microtubules at right angles to each other, involved in moving chromosomes apart during cell division (mitosis)
-Only found in animal cells
Chlorophyll
The pigment responsible for absorbing the energy in the light reaction of photosynthesis
Chloroplasts
A large organelle 5-10um. They have an external membrane and layers of internal membrane. They covert light to chemical energy using pigments to trap chlorophyll.
Chromoplasts
Plastics containing coloured pigments but no chlorophyll. Found in flowers, coloured leaves, fruits and roots.
Chromosomes
A structure containing proteins and a single DNA molecule that carries genetic information.
Cell
The most basic structural and functional unit of an organism. I
Endoplasmic reticulum
The system of membrane lined cavities in the cytoplasm of eukaryote cells that is the site of protein synthesis
Smooth
Transports lipids and carbohydrates
Rough
Transports proteins and has Ribosomes on its surface
Enzyme
A substance, usually a protein the increases the rate at which a biochemical reaction takes place
Eukaryotic cell
A cell classification that has the sub kingdoms:
Animalia, Plantae, Protista, and Fungi.
It has a complex internal structure with:
-membrane bound organelles
-Nucleus
Cilia
An organelle that are found on the outside of the cell and are used for locomotion or movement of liquid over the cells surface.
Cytoplasm
The contents of a cell other than the nucleus.
Cytoplasmic Streaming
The controlled, directional movement of cytoplasm the facilitates movement of substance of the cell
Cytoskeleton
The network of microtubles and microfilaments found in Eukaryotic cells
Cytosol
The soluble, gel-like part of the cytoplasm
DNA
Deoxyribonucleic acid
A double stranded nucleic acid molecule composed of repeating neucleotide bases of Adenine, Thymine, Guanine, and Cytosine which contains the coded information for the production of proteins.
Electron Microscope
A device used to amplify sides and images using beams of electrons to form a photographic image, hence all the images are black and white. All the cells used on this are dead due to the film require to see the cell through the microscope.
Flagellum
Long tentacle like structures that assist the cell in moving. There is usually 1-3 flagella attached to a cell.
Golgi Apparatus
A flat membrane sandwich that packages molecules to be sent out of the cell by secretion and is important in secretory cells.
Intracellular
A term used to refer to the inner of the cell.
Leucoplasts
A category of plastids that contain no colour pigment.