What are the 5 major steps involved in photosynthesis?

Terms in this set (7)

What is absorbed by the plant for energy?

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. Through photosynthesis, the plant uses the stored energy to convert carbon dioxide (absorbed from the air) and water into glucose, a type of sugar.

What provides most of the energy for plants?

During photosynthesis, plants convert the sun’s energy into chemical energy which is captured within the bonds of carbon molecules built from atmospheric carbon dioxide and water. Plants use the energy in some of the carbon molecules they make for the activities to keep themselves alive and to reproduce.

What absorbs light energy in plants?

A pigment is a compound that absorbs a particular wavelength of visible light. Chlorophyll is a green pigment contained in thylakoid membranes of chloroplasts that is used in photosynthesis by plants.

What absorbs the most sunlight?

Darker colors tend to absorb more energy from the sun than objects with lighter colors. Someone wearing a white T-shirt in the summer will find that he is cooler than someone wearing a black or dark-colored shirt. This is true of all materials which have dark colors.

• 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 the two main steps in photosynthesis?

There are two main stages of photosynthesis: the light-dependent reactions and the Calvin cycle.

What is the first step in photosynthesis process?

The first stage of photosynthesis is called the light reactions. During this stage, light is absorbed and transformed to chemical energy in the bonds of NADPH and ATP.

What are the two main steps in photosynthesis explain briefly?

The two stages of photosynthesis: Photosynthesis takes place in two stages: light-dependent reactions and the Calvin cycle (light-independent reactions). Light-dependent reactions, which take place in the thylakoid membrane, use light energy to make ATP and NADPH.

What are the 3 steps involved in photosynthesis?

The three events that occur during the process of photosynthesis are: (i) Absorption of light energy by chlorophyll. (ii) Conversion of light energy to chemical energy and splitting of water molecules into hydrogen and oxygen. (iii) Reduction of carbon dioxide to carbohydrates.

What are the steps in photosynthesis and what are the products in each step?

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).

What are the two types of respiration?

The Presence of Oxygen There are two types of cellular respiration: aerobic and anaerobic. One occurs in the presence of oxygen (aerobic), and one occurs in the absence of oxygen (anaerobic).

What is the first step in respiration called?

glycolysis

What type of process is respiration?

“Respiration is defined as a metabolic process wherein, the living cells of an organism obtains energy (in the form of ATP) by taking in oxygen and liberating carbon dioxide from the oxidation of complex organic substances.”

Which type of respiration does not require oxygen?

anaerobic respiration

When your body needs exercise it generates ATP?

Energy and Exercise The body uses different pathways to release energy. For short, quick bursts of energy, the body uses ATP already in muscles as well as ATP ► made by lactic acid fermentation. For exercise longer than about 90 seconds, cellular respiration is the only way to continue ► generating a supply of ATP.

What are the three sources of ATP?

ATP is required for muscle contraction. Four sources of this substance are available to muscle fibers: free ATP, phosphocreatine, glycolysis and cellular respiration. A small amount of free ATP is available in the muscle for immediate use.

What are the three main sources of ATP?

Humans have three main sources of ATP: ATP already in muscles, ATP made by lactic acid fermentation, and ATP produced by cellular respiration.

How does a runner continues to make ATP when her oxygen is limited?

The produc- tion of ATP without oxygen continues through the anaerobic processes of glycolysis and fermentation. Fermentation does not make ATP, but it allows glycolysis to continue. Fermentation removes electrons from NADH molecules and recycles NAD+ molecules for glycolysis.

Which process gives a runner more energy?

Aerobic respiration takes place with oxygen. For the long-distance runner, cellular respiration is the only way to supply enough ATP. Cellular respiration releases energy more slowly and stores energy as glycogen. Stores of glycogen can last for 15 or 20 minutes of activity.

What is the net gain of ATP for glycolysis?

Glycolysis is present in nearly all living organisms. Glucose is the source of almost all energy used by cells. Overall, glycolysis produces two pyruvate molecules, a net gain of two ATP molecules, and two NADH molecules.

What roles does oxygen play in photosynthesis and in cellular respiration?

In photosynthesis, solar energy is harvested as chemical energy in a process that converts water and carbon dioxide to glucose. In cellular respiration, oxygen is used to break down glucose, releasing chemical energy and heat in the process. Carbon dioxide and water are products of this reaction.

How do plants use glucose for respiration?

Photosynthesis is the process by which plants use light energy to convert carbon dioxide and water into sugars. Respiration occurs when glucose (sugar produced during photosynthesis) combines with oxygen to produce useable cellular energy. This energy is used to fuel growth and all of the normal cellular functions.

What is the most abundant form of energy in a cell?

ATP