Eukaryotic cells - Mr M Flashcards
What are the 4 types of eukaryotic cells?
Animals
Fungi
Plants
Protist
Describe the rough endoplasmic reticulum
Series of flattened membranes
Coated with ribosomes
What are the flattened membranes that make up the structure of the rough endoplasmic reticulum called..?
Cisternae
What is the difference between the SER and RER?
The RER is covered in ribosomes as its function is to make proteins however the SER is not as its functions is to make lipids.
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Structure of the plasma membrane:
What is the plasma membrane made from?
phospholipid bilayer
Structure of the plasma membrane:
What do plasma membranes have embedded in them?
Proteins and cholesterol
Why does the plasma membrane of cells have proteins embedded in them?
These proteins can act as receptors the cell can respond to its external environment
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Structure of the cytoplasm:
What is cytoplasm made up of?
- 70% of the cytoplasm is made up of water.
- The cytoplasm also contains proteins, sugars, ions and fatty acids.
What type of reactions take place in the cytoplasm?
Many metabolic reactions take place in the cytoplasm.
What is the plasma membrane?
The plasma membrane is a phospholipid bilayer that separates the inside of the cell from its environment.
Structure of the nuclear envelope:
What are the inner and outer membranes of nuclear envelopes made from?
Phospholipid bilayers.
Function of the nuclear envelope:
What do the pores in the nuclear envelope do?
The pores in the nuclear envelope control the passage of ions, molecules and RNA between the nucleoplasm and cytoplasm
Structure of the nucleus:
What is the nucleoplasm?
semi-solid fluid inside the nucleus,