Photosynthesis

Photosynthesis

By David Fink

Open Ended

Light is a key reactant of photosynthesis. Though white light appears colorless, it actually contains wavelengths of the full visible spectrum. When white light hits surfaces, some of the light is absorbed and the rest is reflected.

Propose why a red object would appear red.

(CFS: Write in complete sentences.)

​Pigment - the natural coloring matter of animal or plant tissue.
Chlorophyll - a green pigment, present in all green plants and in cyanobacteria , responsible for the absorption of light to provide energy for photosynthesis.

Multiple Choice

The reactants of photosynthesis are...

• carbon dioxide and water
• sugar and minerals
• nitrogen and sunlight
• oxygen and glucose

Multiple Choice

The products of photosynthesis are...

• carbon dioxide and water
• sugar and minerals
• nitrogen and sunlight
• oxygen and glucose

Multiple Choice

Thylakoids in chloroplasts are made of _______________ just like _____________.

• genes,

  chromosomes

• amino acids,

  proteins

• phospholipids,

  the cell membrane

• chromosomes,

  DNA

​Remember this from respiration?

​It's just another electron transport chain.

Multiple Choice

What qualities do photosynthesis in the chloroplast and respiration in the mitochondria have in common?

• Glycolysis and photon absorption.

• An electron transport chain and ATP synthase.

• Pigments and pyruvate.

• All of these.

Open Ended

A particular organisms’ leaves are made of an unknown pigment molecule. The absorption spectrum of the pigment is seen in the diagram.

The leaves of this organism appear blue. Provide evidence from the graph that can be used to explain why the leaves appear that color. Propose the wavelengths of light that would be present in high concentrations in its ideal environment. Provide rationale for your response.