Cell Science Ch 4 Flashcards
What is a cell
The basic structural and functional unit of life
What is the Cell theory
The theory that states that all living things consists of cells, that the cells is the basic structural and functional unit of life, and that cells come from pre-existing cells
Eight parts of the compound light microscope
Revolving nose piece
Objective lenses
Diaphragm
Light source
Ocular lenses
Coarse adjustment knob
Fine adjustment knob
Stage and stage clips
Magnification
The degree to which the appearance of a specimen is enlarged
What is a field of view?
The visible area of the specimen seen through the eyepiece of a compound microscope
What is an Organelle
A small structures are found within a; performs a specific function in a cell
What is Cytoplasm?
The watery substance in a cell which the organelles are suspended; also use for transport and chemical reaction
What two structures do plant cells have that animal cells don’t?
The cell wall, and chloroplasts
What is a Cell membrane?
The part of a cell that surrounds and holds the cell contents together; controls movement of substance in and out of a cell
What are chromosomes?
Rod like structures in the nucleus of a cell; contain the generic information of a cell
What is a Vacuoles?
A membrane-surround storage compartment in a cell; stores food, water, and other materials
What is a cell wall?
A structure surrounding plant cells that protects and supports the; made of cellulose
What is chloroplast?
Site of photosynthesis chloroplast in a plant cell, absorb sunlight, carbon dioxide and water to make food
What is a flagella?
Tail like structures that propel cells through their environment
What is Cilia?
Hair like projections that help propel the cell, and or move the substance surrounding the cell
