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Robert Hooke
In 1665, ________ used a microscope to examine dead cells from the bark of an oak tree and discovered cell walls for the first time.
Multicellular creatures
________ are larger, more sophisticated organisms, such as plants and mammals.
Microscopes
________ were created in 1590 and improved during the 1600s.
plasma membrane
The ________ acts as a selective barrier at the cell's border, allowing sufficient oxygen and nucleic acid to flow through.
Light microscopes
________ can successfully magnify a specimen to roughly 1, 000 times its original size; at higher magnifications, extra features can not be seen well.
simplest collection of materials
The cell is the ________ that may be called a living thing in the biological organization hierarchy.
conventional light microscopy
Because 40 nm is less than the 200- nm resolution limit for ________, the greenish- yellow dots appear fuzzy.
3 D reconstruction
A(n) ________ may be constructed by collecting crisp pictures at several distinct planes.
Cells
________ form connections between nerve ________, allowing memories to be solidified and learning to take place.
Bacteria
________ are typically 1- 5 m in diameter, roughly ten times the size of mycoplasmas.
Eukaryotic cells
________ have a diameter of 10- 100 m.
number of specialized organelles
A(n) ________ exist in the cytoplasm of a eukaryotic cell, suspended in cytosol.
Individual fluorescent molecules
________ are illuminated and their positions are recorded using sophisticated technology.
Cells
________ are the building blocks of all creatures.
Cells
________ are as important to biology's living systems as the atom is to chemistry.
Cells
________ have been changed in a variety of ways during the long evolutionary history of life on Earth.
Note
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