Cell Organization and Cell Theory

A group of the same type of cells that work together for a purpose are called -

•  a tissue
• an organ
• an organ system
• an unicellular organism

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A group of different tissues working together is - 

• an organ
• an organ system
• a   prokaryote
• a cell

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The levels of organization from the simplest to the most complex are

• Cells, tissues, organs, organ systems, organism
• Organisms, organs, tissues, cells, organ systems
• Cells, organs, organ systems, tissues, organism
• Tissues, cells, organs, organism

A group of organs working together to perform a life function for a multicellular organism would be called a(n)

• organ system
• organism
• tissue
• organ

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Two examples of organ systems in the human body are - 

• digestive system and respiratory system
• circulatory system and fluid system
• blood system and food system
• nervous system and stomach system

The most basic unit of life is

• a cell
• an organ
• an organ system
• a tissue

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Which instrument is credited for helping scientists develop cell theory?

•  the microscope
• a hand lens
• an electronic balance
• a thermometer

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Twenty years after M.J Schleiden and Theodore Schwann published separate conclusions on the cell theory, Rudolf Virchow proposed that -

• cells form only from pre-existing cells
• bacteria can form in a sterile broth
• all cells can trace their ancestry back to ancient times
• cells are the building blocks of life

Which scientists helped contribute to cell theory?

• Schleiden, Schwann, and Virchow
• Hooke, Darwin, and Schwann
• Schleiden, Pasture, and Watson
• Virchow, Watson, and Crick

Which three statements are part of cell theory?

• All living things are composed of cells, Cells are the smallest units of living things that can perform the processes necessary for life, and Living cells only come from other living cells.
• All living things are composed of cells, Atoms are composed of cells,  and Living cells only come from other living cells.
• All living things are composed of cells, Cells are the smallest units of living things, and The basic components of life consist of a nucleus, cell membrane and mitochondria.
• All living things are composed of cells, Atoms are composed of cells, and The basic components of life consist of a nucleus, cell membrane and mitochondria.

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