Cell Structure Flashcards
What is in an animal cell
Membrane
Nucleus
Cytoplasm
What is in a plant cell
Cell wall Cell membrane Cytoplasm Nucleus Vacuole
What do vacuoles contain
A fluid called cell sap made from salt sugars and pigments.
What is the green structure in which photosynthesis takes place
Chloroplast
What is ultra structure
Detail of a structure as seen using an electron microscope
What is a transmission electron microscope
It sends a beam of electrons through a thin section of the specimen to show the internal structure
What is a scanning electron microscope
Is uses a beam of electrons to provide a surface view of the specimen
What are membranes composed of
Phospholipids and proteins
What are the phospholipids made up of.
Water loving phosphate
Water hating lipid
They are arranged into bilayers
Proteins inbedded
What are the functions of membranes
Retain cell contents
Recognise molecules that touch them
Controls what enters and leaves the cell
Give support
What surrounds the nucleus
Double membrane with numerous pours
What does the nucleus contain
DNA arranged into structures called chromosomes
What are located in chromosomes
Genes
What do genes do
I from the cell on how to make certain proteins
What do nuclear pores allow in
mRNA= Messenger RNA
What is nucleolus
An area in nucleus that stains darkly
What is cytoplasm
A jelly like liquid that surrounds nucleus. Organelles are in it.
What is chromatin
Name given to chromosomes when they are elongated and not dividing
What are mitochondria
Sites of respiration
Surrounded by double membrane
Where is energy realised into mitrochindria
Inner membrane in the infolding
What are chloroplasts
They are surrounded by a double membrane
They contain DNA
They have membrane stacks which contain chlorophyll
What are plants cell wall made up of
Cellulose and are fully permeable
What are ribsomes
Tiny head like structures made up of RNA and protein and work by combing a sequence of amino acids to form a protein
What are prokaryotic cells
Do not have a nucleus or membrane enclosed organelles
