Cell Quiz- Study Flashcards
What makes up all living things?
Cells
Cells
Basic unit of life
Robert Hooke
Discovered cells while observing a cork under a microscope
Anton van Leeuwenhoek
Pond water (living cells)
Robert Brown
Named the nucleus
Matthias Schleiden
Discovered all plants are made of cells
Theodor Schwann
Discovered all animals are made of cells
Rudolph Virchow
Discovered all cells come from other cells
Cell Theory
- All living things are composed of cells
- Cells are the basic units of structure and function for all living things
- New cells are produced from existing cells
What are the two types of cells?
Prokaryotic and Eukaryotic
Characteristics of Prokaryotes
Small and most primitive
Unicellular
All have cell walls and cell membranes
More characteristics of Prokaryotes
Contain DNA, ribosomes, and cytoplasm
No nucleus or membrane bound organelles
Have nucleoid and plasmid
Divide by binary fission
Example of a Prokaryotic cell
Bacteria
(Before Nucleus)
Prokaryotic
Characteristics of a Eukaryote
Have a true nucleus
Have membrane bound organelles
All have cell membranes
May have cell walls
More characteristics of Eukaryotes
Can be unicellular or multicellular
More evolved cells
Some have cilia
Examples of Eukaryotes
Plants, animals, fungi, protists (no bacteria)
Animal cells shapes
Can have all kinds of shapes
What do animal cells contain?
DNA, cytoplasm, ribosomes, cytoskeleton, cell apparatus, nucleus, nucleolus, and smooth & rough ER, centrioles, and lots of lysosomes
What is the shape of a plant cell?
Usually body or square shaped
What do plant cells contain?
DNA, cytoplasm, ribosomes, cytoskeleton, cell membrane, mitochondria, Golgi apparatus, nucleus, nucleolus, and smooth & rough ER
Contain cell walls
Chloroplasts, central vacuoles
What are the differences of animal and plant cells?
Plants contain cell walls, chloroplasts, central vacuoles, while animal cells do not. Animal cells can be any kind of shape, while plant cells are usually a boxy shape. Animal cells also have centrioles and lots of lysosomes and plant cells do not.
Cell membrane
Function: protects cells, controls what enters and leaves the body of the cell
Composed of: phospholipid bilayer, proteins, and carbohydrates
Cytoskeleton
Network of proteins that form long threads or fibers that crisscross the cell