Flashcards in Cell Structure Deck (21):
How were cells discovered (Robert Hooke & Anton Van Leewenhook)
What is the cell theory?
All living things are made up of one or more cells
Cells are the basic unit of structure and functions in organisms
All cells arise from existing cells
What is the difference between a Plant cell and a human cell?
Human cells or flats and plant cells are rectangular
Plant cells create their own food to photosynthesis and human cells do not
Human: No cell wall
Plants: Cell wall
What does a cell's shape reflect?
What is a prokaryote?
No nuclei. DNA is not separated from the rest of the cell. Usually unicellular.
What is a eukaryote?
Contains nucleus that separates DNA from the rest of the cell. ,softly multicellular
What is the difference between a eukaryote and a prokaryote?
The eukaryote has a more complex organization which enables it to carry out more specialized functions than the prokaryote.
The cells outer boundary
The fluid inside the cell
Includes this fluid and almost all of the structures that are suspended in the fluid
A cellular structure on which proteins are made
A German Botanist
Made the discovery that cells make up every part of the plant
A German zoologist
Discover the animals are also made up of cells, like plants
A German physician
Proposed that sells come only from the division of existing cells
What is a cytoskeleton?
The cytoskeleton provides an internal superstructure for the typical eukaryotic cell. Microtubules and microfilaments help to organize the cytoplasmic structure of the cell and play key role in linking the cell membrane to internal structures and also serve as a transport network for moving vesicles through the cell. In a cell like a neuron, the cytoskeleton creates transportation networks so that important proteins can be delivered from the cell body, where they are made, to distant locations at the end of the cellular processes such as the axon and the dendrites.
What does the cytoskeleton do?
The cytoskeleton helps the cell move, keeps in shape, and organize its parts
What is the role of vessels in cells?
Helps maintain homeostasis by storing in releasing various substances as the cells need them
What is homeostasis?
Constant temperature inside of the body/cell
What makes cells and organisms different?
The different organelles and features of cells enable organisms to function in unique ways in different environments.
Cells: make up organisms
Organisms: are made up of cells
What is an organelle?
A specialized part of the cell