Asked by: Adelma Robleño
science chemistry

What are the 6 steps of light dependent reactions?

Last Updated: 12th January, 2020

42
Terms in this set (7)
  • 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.

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Also, what are the 7 steps of light dependent reactions?

Terms in this set (7)

  • (1st Time) Energy is absorbed from the sun.
  • Water is broken down.
  • Hydrogen ions are transported across the thylakoid membrane.
  • (2nd Time) Energy is absorbed from the sun.
  • NADPH is produced from NADP+.
  • Hydrogen ions diffuse through the protein channel.

Also Know, what are the products of the light dependent reactions? The two products of the light-dependent reactions of photosystem are ATP and NADPH. The movement of high energy electrons releases the free energy that is needed to produce these molecules. The ATP and NADPH are used in the light-independent reactions to make sugar.

In this way, what are the steps of light dependent reactions?

These reactions occur within specialised membrane discs within the chloroplast called thylakoids and involve three steps: Excitation of photosystems by light energy. Production of ATP via an electron transport chain. Reduction of NADP+ and the photolysis of water.

What is the difference between light independent and light dependent reactions?

Uses CO2 and the ATP and NADPH from light dependent reactions to produce sugar/ glucose. ATP is used to provide the energy for sugar synthesis and NADPH is used for electrons in the reduction of Carbon Dioxide into sugar.

Related Question Answers

Hasbia Boukabous

Professional

What is light dependent reaction in biology?

Light-dependent reaction. From Biology-Online Dictionary | Biology-Online Dictionary. Definition. The series of biochemical reactions in photosynthesis that require light energy that is captured by light-absorbing pigments (such as chlorophyll) to be converted into chemical energy in the form of ATP and NADPH.

Eufrasio Mocho

Professional

How many ATP molecules are produced in the light dependent reaction?

The light-dependent reactions convert light energy into chemical energy, producing ATP and NADPH. 5. The light-dependent reactions can be summarized as follows: 12 H2O + 12 NADP+ + 18 ADP + 18 Pi + light and chlorophyll yields 6 O2 + 12 NADPH + 18 ATP.

Bettina Arriba

Professional

Where do the light dependent reactions take place?

In photosynthesis, the light-dependent reactions take place on the thylakoid membranes. The inside of the thylakoid membrane is called the lumen, and outside the thylakoid membrane is the stroma, where the light-independent reactions take place.

Taoufik Notaro

Explainer

What is the order of photosynthesis?

It is convenient to divide the photosynthetic process in plants into four stages, each occurring in a defined area of the chloroplast: (1) absorption of light, (2) electron transport leading to the reduction of NADP+ to NADPH, (3) generation of ATP, and (4) conversion of CO2 into carbohydrates (carbon fixation).

Abby Marhuc

Explainer

What occurs in a light dependent reaction?

Light-dependent reaction. In photosynthesis, the light-dependent reaction uses light energy from the sun to split water (photolysis). Oxygen diffuses out of the plant as a waste product of photosynthesis. This all happens in the grana thylakoid of chloroplasts.

Hayate Vieiro

Explainer

How is ATP produced in the light dependent reaction?

In the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The energy generated by the hydrogen ion stream allows ATP synthase to attach a third phosphate to ADP, which forms a molecule of ATP in a process called photophosphorylation.

Richard Ruhweder

Pundit

What is the process of light reaction?

The Light Reactions
It is during these reactions that the energy from sunlight is absorbed by the pigment chlorophyll in the thylakoid membranes of the chloroplast. The energy is then temporarily transferred to two molecules, ATP and NADPH, which are used in the second stage of photosynthesis.

Val Nageshwar

Pundit

What is the first step in light dependent reactions?

The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.

Stanimira Klockner

Pundit

Why is the process of Chemiosmosis also called the light dependent reactions?

The flow of hydrogen ions through ATP synthase is called chemiosmosis, because the ions move from an area of high to low concentration through a semi-permeable structure.

Valdemir Arriola

Pundit

How are the light dependent and light independent reactions of photosynthesis related?

In the light-independent reactions or Calvin cycle, the energized electrons from the light-dependent reactions provide the energy to form carbohydrates from carbon dioxide molecules. After the energy is transferred, the energy carrier molecules return to the light-dependent reactions to obtain more energized electrons.

Gregoire Sampablo

Pundit

What is the process of light dependent reaction?

The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.

Olive Rung

Teacher

What are the three parts of the light dependent reactions?

4 Cards in this Set
What are the three parts of the light-dependent reactions? Photosystem 2, Photosystem 1, and ATP Synthase
What are the functions of photosynthesis 1? to absorb and transfer energy when it goes into the electron transport chain. also to break down water as it goes across the thylakoid membrane.

Romualda Bokenkamp

Teacher

How is water split in photosynthesis?

Water splitting is the chemical reaction in which water is broken down into oxygen and hydrogen: 2 H2O → 2 H2 + O. A version of water splitting occurs in photosynthesis, but hydrogen is not produced. The reverse of water splitting is the basis of the hydrogen fuel cell.

Puig Sauer

Teacher

Where do the products of light dependent reactions go?

Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH. The Calvin cycle, which takes place in the stroma, uses energy derived from these compounds to make GA3P from CO2.

Beaulah Lobeto

Teacher

Is glucose produced in the light dependent reactions?

Oxygenic photosynthesis is composed of two stages: the light-dependent reactions and the light-independent reactions. The light-independent reactions use the ATP and NADPH from the light-dependent reactions to reduce carbon dioxide and convert the energy to the chemical bond energy in carbohydrates such as glucose.

Xinwei Podshibihin

Reviewer

What are the end products of light dependent reaction Class 10?

The end products are ATP and NADPH. Glucose is the end product. ATP and NADPH help in the formation of glucose.

Dalmiro Kempson

Reviewer

Is oxygen a product of light dependent reactions?

Explanation: Oxygen is in fact a by product of light dependent reactions of photosynthesis. Thus an enzyme extracts electron from water, splitting the water molecule into two hydrogen ions and one oxygen atom. The oxygen atom abrubptly combine with another oxygen atom to form O2 .

Geraldin Gellissen

Reviewer

What is produced in the light reaction?

These electrons are used to produce NADPH as well as ATP in a series of reactions called the light reactions because they require light. NADPH and ATP formed by the action of light then reduce carbon dioxide and convert it into 3-phosphoglycerate by a series of reactions called the Calvin cycle or the dark reactions.