Cells Flashcards
Cytoplasm is found in which 2 cells?
Plant and animal cells
Eukaryotic cells are known for being more (complex/simple)?
Complex
Prokaryotic cells are known for being more (complex/simple)?
Simple
Do prokaryotic cells contain a nucleus?
No; pro means before so that means they have no nucleus
Do eukaryotic cells contain a nucleus?
Yes; they came after prokaryotic cells so they do have a nucleus
T/F: Bacteria, plant and animal cells have cell walls
False; plants and bacteria have cell walls but animals do not
What are the 3 structures in a plant cell that animal cells lack?
- Central vacuole
- Cell wall
- Chloroplast
The plasma membrane is composed of ___________?
Phospholipids
T/F: Prokaryotic and eukaryotic cells have ribosomes
True
In a fluid mosaic model, do membrane proteins (phospholipids) have hydrophilic and hydrophobic regions?
Yes; hydrophilic heads face towards the cytoplasm (the inside of the cell) whereas the hydrophobic tails face inwards
T/F: The nucleus of an animal cell contains a double membrane called the nuclear envelope
True!
Where are ribosomes made within eukaryotic cells?
The nucleolus which is located deeper with the nucleus
What is chromatin made of?
Chromatin is made up of long DNA molecules found within the nucleus with proteins that form fibers
What are the 5 functions of a cell membrane?
- To isolate the contents of organelles & cells
- To regulate the exchange of other molecules
- Allow communication among other cells
- Create attachments within & between cells
- Regulate biochemical reactions (photosynthesis/cellular respiration)
Cell membranes only allow certain ____ ________ to move through all by themselves
Ions/molecules
