Flashcards in Topic 1.2 ultrastructure of cells Deck (17):
Simple cell structure, no compartmentalisation, NO membrane bound organelles.
What do prokaryotic cells have?
Cytoplasm, Plasma membrane, Naked DNA, cell wall, ribosomes (70s) Pili, flagellum.
Binary fission related to prokaryotes?
binary fission is the splitting of two. it divides prokaryotes to create identical copies.
HAVE membrane bound organelles, Compartmentalised cell structure
What are organelles with single membrane?
Rough endoplasmic reticulum
Smooth endoplasmic reticulum
Vesicles and vacuoles
What are organelles with double membrane?
What does the nucleus have inside it?
Outer membrane - protects chromosomes
nucleoplasm - liquid
nucleolus - creates ribosomes
pore in nuclear envelope.
What does mitochondria have inside it?
USED to made ATP
Smooth outer membrane
chromosome - determines hereditary characteristic
ribosome - produces protein
what does chloroplast have inside it?
CARRIES out photosynthesis
smooth outer membrane
ribosome - synthesise cytoplasmic proteins
What does endoplasmic reticulum do?
transforms chemicals in cells
Difference between RER and SER
RER has ribosomes SER does not
What does the Golgi apparatus do?
Complex vesicle made of stacked pouches called cisternae.
Transports, modifies, packs proteins and lipids into vesicles for delivering to targeted places.
carries proteins to plasma membrane
What do lysosomes do?
They have digestive enzymes
important in development of cells and the exit of substances.
What does the plasma membrane do?
controls what goes in and out of cell
secrete substances through ducts
secrete substances directly into the blood stream.