Plants use a process called photosynthesis to make food. During photosynthesis, plants
trap light energy with their leaves
. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
How do plants capture and use light in photosynthesis IB?
Plants use a process called photosynthesis to make food. During photosynthesis, plants
trap light energy with their leaves
. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.
How is light captured in photosynthesis?
Chloroplasts (left) convert light energy into chemical energy. … Photosynthesis in green plants takes place in chloroplasts (Figure 19.1). The energy of light captured by
pigment molecules, called chlorophylls
, in chloroplasts is used to generate high-energy electrons with great reducing potential.
Which part of a plant captures the light energy used in photosynthesis?
Chlorophyll, the primary pigment used in photosynthesis, reflects green light and absorbs red and blue light most strongly. In plants, photosynthesis takes place in
chloroplasts
, which contain the chlorophyll.
How do plants capture and use light?
Plants use a process called
photosynthesis
to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose.
What are the 3 stages of photosynthesis?
| Stage Location Events | Light-dependent reactions Thylakoid membrane Light energy is captured by chloroplasts and stored as ATP | Calvin cycle Stroma ATP is used to create sugars that the plant will use to grow and live |
|---|
Do plants take in oxygen?
Most folks have learned that plants take up carbon dioxide from the air (to be used in photosynthesis) and produce oxygen (as a by-product of that process), but less well known is that
plants also need oxygen
. … So plants need to breathe — to exchange these gases between the outside and the inside of the organism.
What causes cyclic Photophosphorylation to occur in photosynthesis?
This is called cyclic photophosphorylation. The chloroplast shifts to this process
when the ATP supply drops and the level of NADPH rises
. Often the amount of ATP needed to drive the Calvin cycle
What two materials are used in photosynthesis?
To perform photosynthesis, plants need three things:
carbon dioxide, water, and sunlight
. for photosynthesis.
What products of photosynthesis does Photorespiration eliminate?
Two molecules
are produced: a three-carbon compound, 3-PGA, and a two-carbon compound, phosphoglycolate.
What are the 5 steps of photosynthesis?
- Step 1-Light Dependent. CO2 and H2O enter the leaf.
- Step 2- Light Dependent. Light hits the pigment in the membrane of a thylakoid, splitting the H2O into O2.
- Step 3- Light Dependent. The electrons move down to enzymes.
- Step 4-Light Dependent. …
- Step 5-Light independent. …
- Step 6-Light independent. …
- calvin cycle.
What are two stages in photosynthesis?
There are two main stages of photosynthesis:
the light-dependent reactions and the Calvin cycle
What part of sunlight do plants use?
Remember, white light is made up of all of the colors of the spectrum
Do plants make all their ATP by photosynthesis?
Unlike animals, which make many ATP by aerobic respiration,
plants make all of their ATP by photosynthesis
.
What do the light-dependent reactions of photosynthesis produce?
The main function of light-dependent reactions of photosynthesis is to produce
ATP molecules through oxidation-reduction reactions
and chemiosmosis reactions in chloroplasts.
What is the first stage of photosynthesis called?
Light energy is converted to chemical energy during the first stage of photosynthesis, which involves a series of chemical reactions known as
the light-dependent reactions
.
