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Photosynthesis
Terms and Definitions
43
Biology
12th Grade
11/20/2009

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Term
Thylakoid
Definition

a system of flattened membranous sacs.[image]

Electron transport takes place in the membrane.

Term

Grana

Definition

stacks of thylakoids interconnected and layered on top of one another.

[image]

Term

Golgi

Definition

-Flattened sacs in the cytosol.

-Modifies proteins for export.[image]

Term

Cytosol

Definition

A gelatin like aqueous fluid.

[image]

Term

What is a Cytoskeleton?

 

Definition

A network of long protein strands located in the cytosol.

[image]

Term

What is a Prokaryotes?

 

Definition

A unicellular organism whose cells lack a membrane bound nucleus.

[image]

Term

What is a Eukaryotes?

Definition

A multi cellular organism whose cells contain a mebrane bound nucleus. Ex:Animals,plants,fungi.

[image]

Term

How does Passive transport differ from Active transport?

Definition
Passive transport doesn't need an input of energy whereas active transport does.
Term

Peripheral Proteins

Definition

Located on both the interior and exterior surface of the cell membrane.

[image]

Term

Mitochondria

Definition

-A large organelle. -Scattered through the cytosol -The sight of chemical reactions that transfer energy.

[image]

Term

Light Reactions

Definition

The initial reactions in

photosynthesis.[image]

Term

Selectively Permeable

Definition

The ease with which substances cross the membrane.

[image]

Term

What is a Nucleus?

Definition

The control centers of a cell.

[image]

Term

Endoplasmic Reticulum:Rough/Smooth    

 

Definition

The Rough ER has ribosomes attached to it the Smooth ER does not.

         [image][image]

            Rough                  Smooth

Term

Ribosomes

Definition

-Most numerous organelles. -Contains proteins and RNA. -Important in the synthesis of proteins.

[image]

Term

Integral Proteins

 

Definition

Embedded in the bilayer

[image]

Term

Fluid Mosaic Model

Definition

The lipid bilayer is fluid so the pattern in the membrane is constantly changing.

[image]

Term

Stroma

Definition

A solution sorrounding the thylakoid.

[image]

Term

Biochemical Pathway

 

Definition
A series of reactions linked.
Term

What is a Cell?

 

 

Definition

The smallest unit of matter that can carry on all of the processes of life.

[image]

Term

Cytoplasm

Definition

-Between the nucleus and cell membrane -Contains various organelles of the cell.

[image]

Term

What is an organelle?

Definition

A cell component that performs specific functions for the cell.

[image]

Term

Cristae

Definition

-The inner membrane of the mitochondria. -Create greater space for chemical reactions.

[image]

Term

What is a plastid?

Definition

-Only present in plant cells. -Stores food or pigments.

[image]

Term

What are two examples of common solvents?

               

Definition
              Water and alcohol.                 [image][image]
Term

What is the range of the PH scale?

 

Definition

0-14

[image]

Term

A covalent bond....

Definition
Shares electrons.
Term

What is a cell membrane?

Definition

A thin membrane sorrounding the cell.

[image]

Term

Photosynthesis

Definition

The process by which energy transfer takes place.

[image]

Term

What is a lysosome?

Definition

-An organelle. -Round "containers" that function as storage vessels for powerful digestiive enzymes.

[image]

Term

Visible spectrum

Definition

An array of colors ranging from red at one end to violet at the other.

[image]

Term
The three parts of the cell theory
Definition
-cells come only from the reproduction of existing cells. -all living things are composed of one or more cells. -cells are the basic unit of structure and function in an organism.
Term
Exocytosis
Definition

-Requires cells to expend energy

-Type of active transport

-Cells use exocytosis to release large molecules.

EX:Proteins.

[image]

Term
Endocytosis
Definition

-Requires cells to expend energy

-Type of active transport

-The process by which cells ingest external fluid.

[image]

Term
Pinocytosis
Definition

-Invovles the transport of fluids.

[image]

Term
phagocytosis
Definition

The movement of large particles

Term
Photosystem[image]
Definition
cluster of pigment molecules grouped within chlorophyls and carotenoids.
Term
What is the role of chlorophyl and other pigments?
Definition
They absorb light to create energy.
Term
Balanced formula for photosynthesis
Definition
6CO+6H2O+light energy----->C6H1206+6O2
Term
What advantage do the Grana give the chloroplast?
Definition
They increase the surface area.
Term
Diffusion
Definition

-The movement of molecules from an area of high concentration to an area of low concentraion.

-Molecules moves down their concentration gradient.

Term
Isotonic
Definition
When the concentraion of solute outside and inside the cell are equal.
Term
Product and waste product of light dependent reaction
Definition

-products are ATP, oxygen, and NADPH.

-Waste product oxygen

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