Photosynthesis Flashcards
What is the photosynthesis equation?
H20+co2+soil—-light energy———C6H12O6+O2
What is photosynthesis?
Is the process by which plants use sunlight water and carbon dioxide to create oxygen and energy in the form of sugar
What is the key to photosynthesis?
Chlorophyll
How does chlorophyll work in plants?
This large and complex molecule has electrons that become activated when light shines on it
What are the different forms energy exists?,
Heat, light, electrical, chemical, and mechanical energy
What activates the electrons in the chlorophyll?
The electrons in the chlorophyll are activated by light, and this electron energy is used to make organic molecules (new plant tissue)
First law of thermodynamics?
The amount of energy does not change, only the forms of energy changes
Second law of thermodynamics
Heat is always produced whenever one forms of energy is changed into another form
A mother deffenition for photosynthesis?
Photosynthesis is the transformation of light energy into chemical energy.
How is the energy of plants first converted?
Energy of sun is first converted into the chemical energy of plants.
How many units of sun does photosynthesis require?
Photosynthesis requires about 100 units of sun energy to produce one unit of sugar energy.
How do you call animals that eat plants?
Herbivores
How do you call the animals that eat herbivores?
First carnivore
How do you call the animal that eats first carnivore animals?
Second carnivore
What is the energy conversion efficiency?
10%
Where does carbon come from?
It comes from the air
Where does the hydrogen and glucose come from
Plants make sugar by using energy from sunlight to transform carbon dioxide a gas absorbed from the air, and water taken from the ground by roots
What do all multicellular, and unicellular plants have?
Chloroplast
What does chloroplast contain?
Chloroplast contain chlorophyll and enzymes for the photosynthesis process
What does chlorophyll contain?
The chloroplast has many specialized structures. Stacks of discs, called grana, contain the chlorophyll and act like photoelectric cells.
What is the first stage of photosynthesis?
When light shines on these grana, the electrons of the chlorophyll are activated. This is the first step of photosynthesis
What is the second step of photosynthesis?
Involves the building of sugar molecules from carbon dioxide and water.
When light shines on chlorophyll, the light energy is transformed into….
Chemical energy
How do scientist call the light reactions of photosynthesis?
Dark reactions
How do scientist call the synthesis reactions?
Light-dependent reactions
Wha kind of energy is required to run synthesis reactions?
Heat and light energy
Where does that energy come from?
The sun
What the name of the scale of short and long waves?
Electromagnetic spectrum
How does energy exist?
Energy exists as waves
Which waves have more energy
Short waves
Which waves have less energy
Long waves
How do you call waves shorter than violet light
Ultra violet
How do you call waves longer than red lights
Infra red
What is a visible light spectrum
Rainbows
Which color is the short side of the rainbow?
Blue
Which color is on the long side?
Red
Which color is about in the middle?
Yellow
Which color do you see when you look at plants?
Red
Which two primary colors do you not see when looking at a plant?
Yellow and blue
What takes energy
Electrons
When light activates the electrons of chlorophyll, then those electrons have
Less energy
What happens to chlorophyll solution when light is shined on it?
The chloroplast turned red
Where are heavy large substances
At the bottom
Where are light substances?
At the top
What is chromotagraphy?
Is a very basic chemical process used to separate organic molecules from each other
What happens during the process of chromotagraphy?
During this process a solvent passes through a sample that has be3n impregnated on a piece of paper
If carbon dioxide is removed from the phenolred solution, then what process is going on in the elodea?
It won’t perform photosynthesis
Is ligth require by the plant during photosynthesis?
Yes
What is the control?
An element that remains unchanged or unaffected by other variables
What is the purpose of having a control
To compare your answers
