PHOTOSYNTHESIS

Introduction

Plant: ______

______

Adenosine Triphosphate (ATP)

One of the most important compounds that cells use. ______

______.

ATP consists of ______

______

Adenosine diphosphate (ADP) has two phosphate groups instead of three. ______

______

Cells release the energy stored in ATP ______

______

Uses of ATP

n  Powers protein pumps in the cell membrane

n  ______

n  Power for synthesis of proteins

n  ______

n  Provides cell energy

Autotroph or Heterotroph

Heterotroph: ______

Autotroph: ______

Photosynthesis - ______

1.______2.______3.______

Photosynthesis

______+ ______+ ______

What is Light?

Light Speed, c = ______

or ______mph.

Which type of light carries more energy,

blue or red?

Wave length and energy are ______

• The smaller the wave length, the ______

• Blue light is ______energy

• Red light is ______energy

Why are plants usually green? ______

Plant Pigments

n  Pigments – ______

n  Chlorophyll – ______

______

n  Chlorophyll a - ______

n  Chlorophyll b - ______

Accessory Pigments

n  Carotene - ______

n  Xanthophyll -______

n  Anthocyanin – ______

n  Why do plants need accessory pigments?

n  ______

n  The accessory pigments are always ______in most plants but masked by the ______.

n  Why do leaves change color in the fall?

n  ______

Photosynthesis

n  Takes place in the ______

n  Thylakoids – ______

______

n  Grana – ______

______

n  Stroma - ______

______

Photosynthesis (Overall)

Connection between light and dark reactions

n  The electron acceptor ______enter the light reaction

\

n  NADP+ accepts ______and a ______making NADPH.

n  ADP is converted to ATP

n  ______

______

Light-Dependent Reaction

n  Inputs = ______, ______, ______, ______

n  Occurs in the ______

n  Conversion of light energy to ______and ______

n  ______is released through the ______.

1.  Photosystem II – light energy is absorbed and sends electrons through ______

______.

Note: H2O is the source of ______, ______, ______

2.  Electrons move along ETC and ______.

3.  Photosystem I – electrons are re-energized and NADP+ picks up electrons and H+ (NADPH formed)

  1. H+ builds up in thylakoid space, exits from high to low to stroma ______

______

Dark Reaction (Calvin Cycle)

n  Take place in the ______

n  Use ______and ______to make ______

n  ______

n  Starch – ______

n  Cellulose - ______.

Dark Reaction (Calvin Cycle) Steps

1.  CO2 enters the Calvin Cycle from the atmosphere. The enzyme rubisco combines CO2 ______

2.  ______that are reduced and combine with ATP and NADPH to make ______

______.

3.  One PGAL leaves the cycle at midpoint and becomes the building block for glucose

4.  ______

______

The products of the light reaction fuel the ______

The products of the Calvin cycle fuel the ______

Factors Affecting Photosynthesis

n  Shortage of ______

n  H2O acts as ______

n  Temperature

n  Photosynthesis is control by ______

n  Light Intensity

n  More light increases rate of ______