when chlorophyll absorbs light energy, ____. course hero

What happens when a chlorophyll molecule absorbs a photon?

The reaction-center chlorophyllaof photosystem II is known as P680 because this pigment is best at absorbing light having a wavelength of 680 nm (in the red part of the spectrum).

What is the function of chlorophyll?

A chlorophyll molecule absorbs photon or light energy. 2. An electron of the molecule in its normal orbital, said to be in its ground state, will be elevated to an orbital of a higher energy. The molecule is now in an excited state. The molecule only absorbs photon that has the energy that is equal to the energy needed for it to be able to ...

Why is chlorophyll green in nature?

 · 8. When light excites chlorophyll, the chlorophyll moleculea. changes to carotene. b. becomes agitated and moves rapidly. c. becomes radioactive.d. absorbs the energy and moves an electron to a higher energy state. e. becomes ionized. ANSWER: D Page 2 …

Why is chlorophyll a called P700 in photosynthesis?

1 Light reactions Chlorophyll absorbs solar energy which energizes electrons from BIOL 3553 at The University of Sydney

What happens when chlorophyll absorbs light energy?

When chlorophyll absorbs energy from sunlight, an electron in the chlorophyll molecule is excited from a lower to a higher energy state. The excited electron is more easily transferred to another molecule. A chain of electron-transfer steps follows, ending when an electron is transferred to a carbon dioxide molecule.

What happens when energy is absorbed by chlorophyll quizlet?

In light-dependent reactions, the energy from sunlight is absorbed by chlorophyll and converted into chemical energy in the form of electron carrier molecules like ATP and NADPH. Light energy is harnessed in the Photosystems I and II, both of which are present in the thylakoid membranes of chloroplasts.

What happens first after chlorophyll absorbs light energy quizlet?

what happens when chlorophyll molecule absorbs light: what happens when chlorophyll molecule absorbs light: photosynthesis begins. it becomes excited. This energy passes through other chlorophyll molecules, and into the reaction center of Photosystem II (Electron transport chain).

When chlorophyll absorbs a photon of light it will?

A photon of light hits chlorophyll, causing an electron to be energized. The free electron travels through the electron transport chain, and the energy of the electron is used to pump hydrogen ions into the thylakoid space, transferring the energy into the electrochemical gradient.

What happens to the light energy absorbed by the photosystems during photosynthesis quizlet?

What happens when a photosystem absorbs light? Some of its electrons are raised to a higher energy level. Which of the following processes occurs in the thylakoid membrane and converts captured light energy into chemical energy?

What happens to the solar energy absorbed by plants during photosynthesis quizlet?

-The first stage in photosynthesis, light reactions contain the steps in which solar energy is absorbed and converted into chemical energy in the form of ATP and NADPH. These reactions power the Calvin cycle but produce no sugar themselves.

What are the two stages of photosynthesis?

While there are many steps behind the process of photosynthesis, it can be broken down into two major stages: light-dependent reactions and light-independent reactions.

Where in the chloroplast do the light reactions take place?

the thylakoidThe chloroplast is involved in both stages of photosynthesis. The light reactions take place in the thylakoid.

What is the result of the light-dependent reactions in photosynthesis?

The light-dependent reactions convert light energy into chemical energy. The goal of the light-dependent reactions of photosynthesis is to collect energy from the sun and break down water molecules to produce ATP and NADPH.

How plants absorb photons of light energy?

When a plant is exposed to light, photons of appropriate wavelength will strike and be absorbed by the pigment-protein complexes arrayed on the thylakoid membranes. When this happens, the energy of the photon is transferred to the pigment molecule, thus causing the pigment to go into an electronically excited state.

What is the role of chlorophyll in photosynthesis?

Chlorophyll’s job in a plant is to absorb light— usually sunlight. The energy absorbed from light is transferred ...

Why do plants have chlorophyll?

Phytoplankton, the microscopic floating plants that form the basis of the entire marine food web, contain chlorophyll, which is why high phytoplankton concentrations can make water look green. Chlorophyll’s job in a plant is to absorb light—usually sunlight. The energy absorbed from light is transferred to two kinds of energy-storing molecules.

What is the process of absorbing light?

They do this through a process called photosynthesis, which uses a green pigment called chlorophyll. A pigment is a molecule that has a particular color and can absorb light at different wavelengths, depending on the color. There are many different types of pigments in nature, but chlorophyll is unique in its ability to enable plants to absorb ...

What is the function of pigments in plants?

A pigment is a molecule that has a particular color and can absorb light at different wavelengths, depending on the color. There are many different types of pigments in nature, but chlorophyll is unique in its ability to enable plants to absorb the energy they need to build tissues. Chlorophyll is located in a plant’s chloroplast s, ...

What is the molecule that absorbs light?

A pigment is a molecule that has a particular color and can absorb light at different wavelengths, depending on the color. There are many different types of pigments in nature, but chlorophyll is unique in its ability to enable plants to absorb the energy they need to build tissues.

Where is chlorophyll found in plants?

Chlorophyll is located in a plant’s chloroplast s, which are tiny structures in a plant’s cells. This is where photosynthesis takes place.

How do plants use energy?

Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar. Plants use glucose together with nutrients taken from the soil to make new leaves and other plant parts.