Multiple Choice
In the history of cell biology, Robert Hooke used the Latin term "cellula" when describing cork. What does this word mean in Latin?
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1. Overview of Cell Biology
History of Cell Biology
Multiple Choice
In the history of cell biology, how did Zacharias Janssen most directly contribute to the development of ideas that later supported cell theory?
A
He is often credited with helping invent the compound microscope, which enabled later scientists to observe cells and microorganisms.
B
He discovered the cell nucleus and described it as a central component of the cell.
C
He proposed that all living organisms are composed of cells and that cells arise from preexisting cells.
D
He demonstrated that spontaneous generation does not occur by showing microbes come from other microbes.
Verified step by step guidance1
Step 1: Understand the historical context of cell biology and the development of cell theory, which required advancements in technology to observe cells.
Step 2: Identify the key contribution of Zacharias Janssen, who is historically credited with inventing or improving the compound microscope.
Step 3: Recognize that the invention of the compound microscope was crucial because it allowed scientists to observe cells and microorganisms for the first time, providing the visual evidence needed to develop cell theory.
Step 4: Differentiate Janssen's contribution from other scientists who made discoveries about the cell nucleus, cell theory principles, or disproved spontaneous generation, as these were later developments.
Step 5: Conclude that Janssen's most direct contribution was technological—creating the tool (compound microscope) that enabled the observation of cells, which laid the foundation for later scientific discoveries in cell biology.
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