Cell Organelles, Cell Theory, and Cell Organization

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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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

The most basic unit of life is

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

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Which scientists helped contribute to cell theory?

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

The first observation of cells by Robert Hooke was seen in which organic matter?

• Cork
• Bacteria
• Oak leaf
• Fruit fly

This scientist was the first to identify cells and name them:

• Hooke
• Leeunwenhoek
• Schleiden
• Virchow

All existing cells are produced by other

• living cells
• dead cells
• atom cells
• animal cells

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Who looked at cork and named the cell?

• Robert Hooke
• Van Leeuwenhoek
• Robert Brown
• Francesco Redi

This organelle is found in eukaryotic cells. It contains the DNA and controls the functions.

• Vacuole
• Cytoplasm
• Cell membrane
• Nucleus

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Often called the powerhouse of the cell because it converts energy for cell use.

• Mitochondria
• Ribosomes
• Chloroplast
• LCV

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