Science Cards Flashcards
Do cancer cells perform any useful functions?
No, cancer cells don’t perform helpful/useful functions.
How do organisms usually get cancer cells?
Organisms get cancer cells from mutations in genes that produce proteins involved in the cell cycle.
What is cancer?
uncontrolled growth and multiplication of cells that may be harmless or deadly.
Cancer can result in what?
tumors
What do tumors look like
clumps of cells normally on the skin that grow into the veins
What is the trend in differences in cancerous cells and normal cells?
Cancer cells have less total cells in each cell cycle process while normal cells have more.
What are the three main ideas of cell theory?
All organisms are composed of one or more cells, cells are the basic unit of function for all organisms, all cells come from pre-existing cells
What are three examples of ongoing advancements in microscopy?
Electron microscopes, staining, and centrifuges
What does radiation do?
It targets specific cells and destroys them.
What does the immune system do?
It helps detect the early developments of cancer cells and destroys them. However, sometimes cancer cells are able to avoid being detected.
What are protists?
Protists are not classified as plants or animals. They are eukaryotes, which means their cells have a nucleus and other membrane bound organelles. (most protists are single celled)
Is bacteria a protist?
No, bacteria does not belong in the protist kingdom because bacteria is prokaryotes meaning it does not have specialized organelles unlike protists.
What are the three domains?
Archaea, Bacteria, and Eukarya
Who studied cork cells in 1665?
Robert Hooke
Who ground his own lenses to observe cells in 1670s?
Anthony Van Leeuwenhoek
Who identified and named all nucleus in plant cells?
Robert Brown
Who suggested cells were the basic units of all living things?
Schleiden (plant cells 1838) and Schwann (animal cells 1839)
Who popularized that cells came from other cells in 1858?
Virchow did
Who originally came up with the idea that Virchow popularized?
Robert Remak
What are the three main ideas of cell theory?
All organisms are composed of one or more cells, cells are the basic unit of function for all organisms, all cells come from pre-existing cells
What are three examples of ongoing advancements in microscopy?
Electron microscopes, staining, and centrifuges
What are the three modern cell theory additions?
energy flow occurs in cells, cells contain DNA, in organisms of similar species all cells are basically the same in chemical composition
What does diffusion result in?
dynamic equilibrium
What is dynamic equilibrium?
continuous movement but no overall change
