organisation of the organism Flashcards
Cytoplasm position
found inside the cell and contains all the other cell structures
The large nucleus position
surrounded by a nuclear membrane to separate it from the cytoplasm
The cell membrane position
surrounds the cell
The cell wall position
surrounds the cell membrane in plant cells
Chloroplasts are organelles found in
the cytoplasm that are packed with the pigment chlorophyll and so are green in colour
Within the cytoplasm, the following organelles are visible in almost all cells except prokaryotes when looking at higher magnification (ie using an electron microscope): state them and where they can be found
Mitochondria (singular: mitochondrion) are organelles found throughout the cytoplasm Ribosomes are tiny structures that can be free within the cytoplasm or attached to a system of membranes within the cell known as Endoplasmic Reticulum Endoplasmic reticulum studded with ribosomes looks rough under the microscope; this gives rise to its name of Rough Endoplasmic Reticulum (often shortened to R.E.R.) Vesicles can also be seen using a higher magnification – these are small circular structures found moving throughout the cytoplasm
Vacuoles
large vesicles that take up a large part of the interior of plant cells
Specialised cells are those which have
developed certain characteristics in order to perform particular functions Cells specialise by undergoing differentiation: a process that involves the cell gaining new structures within the cell in order for its structure to be suited to its function
Cells specialise by undergoing differentiation
process that involves the cell gaining new structures within the cell in order for its structure to be suited to its function
tissues are always made up of
only one type of cell.
Magnification is calculated using the following equation:
drawing size/actual size
Actual size =
drawing size / magnification
Drawing size =
magnification x actual size
magnification does not have
any units and is just written as ‘x 10’ or ‘x 5000’
1mm = ..µm
1000