SC.912.L.14.1 Cell Theory

Which invention from the 17th century allowed for the development of modern cell theory?

• x-rays
• computers
• the light microscope
• the scanning electron microscope

Cell theory was first proposed in 1838. Evidence obtained through additional scientific investigations resulted in the current cell theory. Which statement describes a component of the original cell theory that was removed because of the new scientific knowledge?

•  All living things are made of cells.
• All cells come from other preexisting cells.
• Cells form through spontaneous generation.
•  Cells are the basic structural and functional units of life.

 Cells are the basic structural and functional units of life.

• Plants have cells but animals do not.
•  They are both made of one or more cells. 
• They both come from the same kind of cell.
• They both come from a non-living organism.

The combined observations of Mattias Schleiden, Theodor Schwann and Rudolph Virchow resulted in the formation of the cell theory. Which of the following is not part of the cell theory?

• All cells contain a nucleus. 
• All cells come from other living cells.
• All living organisms are made of one or more cells
•  Cells are the basic unit of structure and function of all living things.

A plant and an animal are both living things. According to the Cell Theory, what can you conclude about these two very different organisms?

• Plants have cells but animals do not.
• They are both made of one or more cells. 
• They both come from the same kind of cell.
• They both come from a non-living organism.

Cell theory states:

• All living cells must have a cell wall.
•  All living cells require glucose for survival.
• The basic unit of life is a cell.
• All cells contain a nucleus

 Which of the following is NOT one of the main components of the cell theory?

• cells must contain DNA
• all living things are made of cells
• cells can only come from other cells
• cells are the basic unit of life

Unlike eukaryotes, prokaryotes do not have:

• DNA
• cytoplasm
• cell walls
• a membrane bound nucleus

Which of the following statements supports the cell theory as it is stated today?

• Not all cells are alive.
• Cells must contain a nucleus.
• All abiotic are composed of more than one cell
• Cells come from preexisting cells through cell division.

All organisms are made of:

• organelles
• cytoplasm
• DNA
• cells