A2.2 and B2.2 Vocabulary 1. SL

What is unicellular?

Consisting of a single cell.

What is a protist?

Single-celled, eukaryotic organisms.

What is multicellular?

Consisting of many cells.

What is magnification?

How much larger an object appears.

What is resolution?

The amount of detail that can be seen.

What is quantitative data?

Numerical measurements with units.

What is qualitative data?

Descriptive information about an object.

What is an electron microscope (EM)?

Microscope that uses a beam of electrons.

What is cytogenic electron microscopy?

Electron microscopy technique using frozen samples.

What is ultrastructure?

Fine structure of cells observed with electron microscopy.

What is freezing etching?

Preparation of specimens for electron microscopy.

What is immunofluorescence?

Technique to determine the location of target structures.

What is a nucleus?

Largest organelle that controls the cell.

What is cytoplasm?

Fluid that fills each cell.

What is a plasma membrane?

Lipid and protein membrane that forms the cell surface.

Differentiation

Process of cell specialization with gene expression

Organelle

Cell substructure unit

Eukaryote

Organism with nucleus surrounded by nuclear membrane

Prokaryote

Unicellular organism without true nucleus

Multinucleate

Cell with two or more nuclei

Phloem sieve tube elements

Specialized cells for sugar conduction in plants

Hypha

Tubular filament body of a fungus