The function of the RER is to fold and process proteins that have been made at the ribosomes.
The function of ribosomes is to synthesis and process lipids
The function of the SER is to process and package new lipids and proteins
Lysosomes transport substances in and out of the cell
SER contains ribosomes
What are the features of prokaryotic cells?
Extremely small - less than 2 μm diameter
Larger - about 10-100 μm diameter
DNA is linear
DNA is circular
No nucleus - DNA is free in the cytoplasm
Nucleus present - DNA is inside the nucleus
No membrane-bound organelles
Cell wall made of polysaccaride called peptidoglycan
Many membrane-bound organelles
Large ribosomes (over 20nm)
What is the maximum resolution you can achieve through a light microscope?
0.2μm
0.1μm
0.4μm
1.0μm
Resolution is how detailed an image is. How well a microscope distinguishes between two points that are close together.
What organelles do plant cells have that animal cells don't?
Chloroplasts
Nucleus
A cell wall with plasmodesmata
A vacuole
Plasma membrane (cell surface membrane)
What is the cytoskeleton?
The network of protein threads contained in a cell
The regulation of the movement of substances into and out of the cell
A round organelle that contains digestive enzymes
The membrane found on the surface of animal cells and just inside the cell wall of plant cells and prokaryotic cells