Shared Flashcard Set

Details

Cell Structure and Function
General Biology Unit 2
24
Biology
Undergraduate 1
06/21/2010

Additional Biology Flashcards

 


 

Cards

Term
Adjustable Diaphragm
Definition
Device which alters the size of the opening through which light passes and adjusts the intensity of light in the field of view.
Term
Cell
Definition
Basic unit of all living things.
Term
Cell Membrane
Definition
A flexible covering that surrounds the cell and separates cytoplasm from the external environment; also surrounds most organelles.
Term
Cell Wall
Definition
A rigid, protective layer that lies outside the cell membrane in plant cells, fungi, and many protistss
Term
Chloroplast
Definition
Membrane-bound organelle in which photosynthesis occurs.
Term
Condensor
Definition
Microscope component that focuses light on objects under study.
Term
Cristae
Definition
Finger-like projections formed by the inner membrane of the mitochondrion.
Term
Cytoplasm
Definition
Term used to refer to contents of a cell other than the nucleus
Term
Depth of Field
Definition
Extent to which microscopic objects can be visualized in the third dimension.
Term
Endoplasmic Reticulum
Definition
Membranous sacs and channels in cells, often bearing ribosomes (designated "rough ER" if ribosomes are present and "smooth ER" if there are no ribosomes)
Term
Field of View
Definition
Area of an object which is visible under microscopic examination.
Term
Focal Plane
Definition
Plane which is in focus for an object under microscopic examination.
Term
Grana
Definition
Disc-like structures inside chloroplasts
Term
Golgi Body
Definition
Membrane-bound organelle in which materials are assembled and modified prior to secretion from the cell.
Term
Mitochondrion
Definition
Membrane-bound organelle in which metabolism occurs
Term
Nucleolus
Definition
Dense cluster of proteins and nucleic acids inside nucleus where ribosomes are formed.
Term
Nucleus
Definition
Membrane-bound organelle which contains chromosomes and nucleolus
Term
Objective
Definition
Magnifying lens on microscope
Term
Organelle
Definition
Term used to refer to membrane-bound structures and other bodies in the cytoplasm.
Term

Phospholipid

Definition
Cell membrane molecule composed of fatty acids and phosphate groups
Term
Protien
Definition
Large molecules composed of chains of amino acids; provide structural support in cell membranes and act as enzymes.
Term
Ribosome
Definition
Small particle of proteins and nucleic acids which is the site of protien synthesis.
Term
Stroma
Definition
The fluid inside a chloroplast, but surrounding grana
Term
Vacuole
Definition
Membrane-bound sac of fluid in cytoplasm; often quite large in plant cells
Supporting users have an ad free experience!