What is Waters role in the light reaction of photosynthesis?

What is Waters role in the light reaction of photosynthesis?

During the process of photosynthesis, six molecules of carbon dioxide and six molecules of water react in the presence of sunlight to form one glucose molecule and six molecules of oxygen. The role of water is to release oxygen (O) from the water molecule into the atmosphere in the form of oxygen gas (O2).

What is the role of water in the light reactions of photosynthesis quizlet?

What role does water play in photosynthesis? Water provides the electrons and hydrogen ions needed to power the light-dependent and light-independent phases of photosynthesis. NADPH plays a big role in the light-independent reaction when it is used, along with ATP, to produce high energy sugars.

Why are light and water so important in the process of photosynthesis?

To perform photosynthesis, plants need three things: carbon dioxide, water, and sunlight. for photosynthesis. The energy from light causes a chemical reaction that breaks down the molecules of carbon dioxide and water and reorganizes them to make the sugar (glucose) and oxygen gas.

What is the role of water in photosynthesis quizlet?

The role of water in photosynthesis is to: provide electrons. The energy of the movement of electrons down a concentration gradient via electron transport within the thylakoid membrane is used to generate: Carbon dioxide is required in the light reactions of photosynthesis.

Is light a reaction?

Light reaction is the first stage of photosynthesis process in which solar energy is converted into chemical energy in the form of ATP and NADPH. The protein complexes and the pigment molecules help in the production of NADPH and ATP.

What are the steps of light reaction?

Light reactions harness energy from the sun to produce chemical bonds, ATP, and NADPH. These energy-carrying molecules are made in the stroma where carbon fixation takes place. The light-independent reactions of the Calvin cycle can be organized into three basic stages: fixation, reduction, and regeneration.

What is the primary function of the light reactions of photosynthesis?

The Light Reactions of Photosynthesis. Light is absorbed and the energy is used to drive electrons from water to generate NADPH and to drive protons across a membrane. These protons return through ATP synthase to make ATP.

What role does carbon dioxide play in cellular respiration?

During the process of cellular respiration, carbon dioxide is given off as a waste product. This carbon dioxide can be used by photosynthesizing cells to form new carbohydrates. Also in the process of cellular respiration, oxygen gas is required to serve as an acceptor of electrons.

What is the role of light in the process of photosynthesis?

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 role does water play in photosynthesis and cellular respiration?

Photosynthesis makes the glucose that is used in cellular respiration to make ATP. The glucose is then turned back into carbon dioxide, which is used in photosynthesis. While water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

Which of the following best describes the role of water is photosynthesis?

Which of the following best describes the role of water in photosynthesis? Water is the only source of protons for the formation of the proton (H+) gradient. Water molecules donate e- to the ETC. Water molecules combine with stored carbon molecules to produce glucose.

How does water play a role in photosynthesis?

Water provides the electrons and hydrogen ions needed to power the light-dependent and light-independent phases of photosynthesis. NADPH plays a big role in the light-independent reaction when it is used, along with ATP, to produce high energy sugars.

How are the light reactions used in photosynthesis?

The energy of light captured by pigment molecules, called chlorophylls, in chloroplasts is used to generate high-energy electrons with great reducing potential. These electrons are used to produce NADPH as well as ATP in a series of reactions called the light reactions because they require light.

Which is a part of the equation of photosynthesis?

The basic equation of photosynthesis is deceptively simple. Water and carbon dioxide combine to form carbohydrates and molecular oxygen. In this equation, (CH2O) represents carbohydrate, primarily sucrose and starch. The mechanism of photosynthesis is complex and requires the interplay of many proteins and small molecules.

How are light reactions different from oxidative phosphorylation?

A principal difference between oxidative phosphorylation and photosynthesis is the source of the high-energy electrons. The light reactions of photosynthesis use energy from photons to generate high-energy electrons (Figure 19.2).