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Introduction to Botany
Concepts & Terms
13
Science
Undergraduate 1
09/17/2013

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Term
Cell Theory
Definition
Organisms are composed of cells that have common structures and functions.

Cell is the smallest unit that can remain alive when removed from organism
Term
Organelles
Definition
Sub-cellular, dependent structures in a cell
Term
Protoplast
Definition
The goo enclosed by cell walls
Term
Microfibrils
Definition
Cellulose molecules in the wall are linked together forming these minute rods, embedded in a "glue" of hemicellulose, pectins, and proteins
Term
Lamella
Definition
Mortar that holes the cells together (intercelluar)
Term
Protoplast
Definition
The living part of a cell, composed of complex colloidal fluid containing dissolved proteins, sugars, acids and substances

Divided into two areas: Cytoplasm and Nucleoplasm
Term
Cytoplasm
Definition
Area outside nucleus
Term
Nucleoplasm
Definition
Area inside nucleus
Term
Membrane Structure
Definition
Consists of proteins and lipids
Term
Nucleus
Definition
Area surrounded by the double membrane, Nuclear Envelope

Major Fns:
1) regulate metabolic activities through protein synthesis
2) transmit stored genetic information to new forming cells
Term
Plastid
Definition
Membrane bounded organelles that produce carbohydrate starch
Term
Mitochondria
Definition
spherical, rod-shaped organelles enclosed by an envelope made of two membranes

The greater energy requirement of a cell - the greater number of mitochondria
Term
Ribosomes
Definition
Extremely small spherical structures made up of two subunits, one larger like an imbalanced ying yang
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