surface of animal cells surface of plant cell, Regulates mvt of substances in and out of cells, has receptor molecules to allow it to respond to chemicals like hormones
Folds in the plasma membrane that increase surface area for absorbtion e.g. epithelial cells in small intestine
Large organelle containing chromatin which is made from proteins and DNA and a structure called the nucleolous.
Surrounded by a nucleur envelope containing pores to allow substances such as RNA in and out of cells.
Nucleolous is where ribosomes are made
Round organelle surrounded by a membrane
Contains enzymes to help digest invading cells or to break down worn out components of the cell
Very small organelle that floats free in cytoplasm or is attatched to rough ER
Site where proteins are made
Two types rough and smooth
Smooth ER- system of membranes eclosing a fluid filled space.
Rough- Same but is covered in ribosomes
Smooth ER synthesises and processes lipids
Rought ER folds and process proteins that have been made at ribosomes
Group of fluid filled sacs
Processes and packages new lipids and proteins, which are transported elsewhere by vesicles.
Oval shaped with a double membrane,
Inner membrane is folded to form a structure called cristae
inside is the matrix, contains enzymes involved in respiration
Site of aerobis respiration, aerobis respiration produces ATP- common energy source in cells
Large numbers of mitochondrion are found in active cells that require a lot of energy.
Finger like projections called villi to increase surface area for absorbtion
cells on surface of villi have microvilli to increase surface area even more
have lots of mitochondrion- provide energy for the transport of digested food molecules into the cell.
Red Blood Cells
adapted for transport of oxygen by....
No nucleus to make more room for haemoglobin to carry oxygen
contain a lot of mitochondrion to provide the large amounts of energy they need to propel themselves towards the egg.