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ISB 202 Exam 2
This is just some terms
15
Plant Sciences
Undergraduate 1
03/03/2009

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Term
Primary Cell Wall
Definition
Inner layer
Term
Secondary Cell Wall
Definition
Outer Layer
Term
Middle Lamela
Definition
Located in between cell walls
Term
Plasmodesmata
Definition
Tiny strands of cytoplasm surrounded by a membrane
Sends signals between 2 cells
Term
Plasma Membrane
Definition
Separates cells, regulates movement between cells. Needs this for cell health
Term
Mitochondria
Definition
An organelle in the cytoplasm of cells that functions in energy production
Term
Chloroplasts
Definition
A chlorophyll containing plastid found in algal and green plant cells
Term
Nucleus
Definition
A part of the cell containing DNA and RNA and responsible for growth and reproduction
Term
Nucleoli
Definition
Site or Ribosome (RNA+Protein) formation, inside nucleus
Term
Endoplasmic Reticulum
Definition
Network surrounded by membrane, most pervasive in cell
Term
Vacuole
Definition
A small cavity in the cytoplasm of a cell, bound by a single membrane(tonoplast) and containing water, food, or metabolic waste
Term
Tonoplast
Definition
The tonoplast is a membrane that separates the vacuole from the surrounding cytoplasm
Term
Meristem
Definition
Embryonic tissue in plants: undifferentiated, growing, actively dividing cells
Term
Apical Meristem
Definition
Shoot and Root tips, growth
Term
Protoderm
Definition
A thin outer layer of the meristem, whci gives rise to the epidermis
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