Cell Comparison and Microscope Operation

Prokaryotic Cell

Cell lacking a nucleus and membrane-bound organelles, typically small and unicellular

Eukaryotic Cell

Cell containing a nucleus and membrane-bound organelles, larger and can be unicellular or multicellular

Microscope Base

Part of the microscope used for stability and support

Coarse Adjustment Knob

Part of the microscope used for initial focusing on the specimen

Light Source

Part of the microscope providing illumination for the specimen

Nosepiece

Part of the microscope holding the objective lenses and allowing for rotation

Total Magnification

The product of the magnification of the objective lens and the ocular lens

Carrying a Microscope

One hand on the arm and the other hand on the base for stability

Thin Samples

Samples need to be thin to allow light from the source to pass through for visibility

Packing up a Microscope

Clean with a wipe, carry with one hand on the arm and the other on the base

Nucleoid

Region in a prokaryotic cell containing DNA but lacking a membrane

Cell Wall

Rigid outer layer providing structure and support to plant cells

Turgor Pressure

Pressure exerted by the fluid content of plant cells against the cell wall

Organelles

Specialized structures within a cell performing specific functions

Cell Theory

Concepts that all living things are made of cells, cells are the basic units of life, and all cells come from pre-existing cells

Mitochondria

Organelle responsible for generating energy in the cell, similar to the engine of a train

Chloroplasts

Organelles in plant cells responsible for photosynthesis

Cytoplasm

Gel-like substance within cells where organelles are suspended

Ocular Lens

Lens closest to the eye, typically with 10x magnification

Cell Membrane

Semi-permeable membrane surrounding the cell, regulating the passage of materials

Cell Wall Function

Prevents the cell membrane from breaking under excess water in plant cells

Cell Theory Misconception

Not all cells contain the same organelles, which is not a part of the cell theory

Cell Membrane Function

Regulates movement of materials in and out of the cell

Cytoplasm Representation

Clear jelly would best represent the cytoplasm in a plant cell model