Cells Flashcards
What types of cells are eukaryotic?
Animal, plant, fungi, algae, protozoa
What types of cells are prokaryotic?
Bacteria, archaea.
What are the roles of the proteins embedded in the phospholipid bilayer?
They act as receptors to detect chemical messengers and signalling molecules in the fluid surrounding cells (extracellular fluid).
Do prokaryotic cells have nuclear membranes?
No.
Do eukaryotic cells have nuclear membranes?
Yes.
Are there any membrane bound organelles in prokaryotic cells?
No.
Are there any membrane bound organelles in eukaryotic cells?
Yes.
How does the cytoskeleton maintain internal cell order?
Holds organelles in place.
How does the cytoskeleton assist w intracellular transport?
Helps move organelles around the cell.
How does the cytoskeleton assist with movement?
Drives and guides cellular migration.
How does the cytoskeleton assist with the assembly of tissues?
Protein fibres of the cytoskeleton connect with protein fibres in the extracellular space.
Where would you find cilia?
Lungs
Give an example of a flagella.
Sperm
Describe the structure of cilia.
Short, usually multiple together. Move with stiff power stroke and flexible recovery stroke.
What do cilia do?
Help to move mucus.
Describe the structure of flagella?
Longer, usually more than one and has snakelike movement.
What is the nucleus enclosed in?
Nuclear membrane/envelope which, like all biological membranes, is a phospholipid bilayer.
How many different types of cells are we made up of?
Approx. 200
What are nuclioli?
Sites of ribosomal RNA synthesis and ribosome assembly.
Is the nuleus closely associated w the SER or the RER?
RER
Is the Golgi Apparatus a membrane bound organelle?
Yes
Are the SER and RER membrane bound organelles?
Yes
What do ribosomes do?
Synthesise proteins.
What does the RER do?
Modifies proteins.