The part of a cell that controls what goes in and out.
What is the cell membrane?
100
The system that breaks down food into nutrients
What is the digestive system?
100
an organism that is made of many cells
What is mulitcellular?
100
the most obvious difference between unicellular and multicellular, because that is what the names mean
What is the number of cells in an organism?
100
the basic unit of life
What is a cell?
200
The stuff that occupies most of the space in the cell.
What is the cytoplasm?
200
The system that brings in oxygen and gets rid of carbon dioxide
What is the respiratory system?
200
examples include ameoba, bacteria, yeast, and paramecium, because of their number of cells, not size.
What are unicellular or single-celled organisms?
200
organs are made of tissues which are made of these
What are cells?
200
the tool used to see individual cells and microbes
What is a microscope?
300
Provides structure for a plant cell.
What is the cell wall?
300
The two systems that work together to carry nutrients to the cells.
What are the digestive and circulatory systems?
300
the name given to cells that can become any other type of cell in an organism
What are stem cells?
300
A multicellular organism would almost surely survive this, but a unicellular organism could not.
What is the death of one of the organism's cells?
300
the approximate percentage of water (by mass) of a cell
What is 70%?
400
The function of the chloroplast
What is converting sunlight into sugar? (photosynthesis)
400
the two systems that work together to carry oxygen to the cells
What are the respiratory and circulatory (cardiovascular) systems?
400
The name given to cells that are already one particular type and normally cannot become any other type of cell.
What are specialized cells?
400
the scientific name for normal cell division in a multicellular organism, like humans
What is mitosis?
400
the things needed for cellular respiration
What are oxygen and nutrients?
500
This is the purpose of the mitochondria.
What is converting nutrients to energy that can be used by the cell? (cellular respiration)
500
The three systems that work together to move the body
What are the skeletal, muscular, and nervous systems?
500
This is what happens to cells when a body part is growing or is being repaired (like when it has a cut)
What is the result of cells reproducing? (Yes, this is called mitosis.
500
a major difference between cells of unicellular and multicellular organisms besides the obvious number of cells
What is individual cells of a multicellular organism not being able to survive independently?
500
The functions of blood in the human body
What are carrying oxygen and nutrients to the cells around the body, removing waste and carbon dioxide from the body and attacking foreign objects in the body?