{"id":3404,"date":"2023-09-11T15:00:08","date_gmt":"2023-09-11T09:30:08","guid":{"rendered":"https:\/\/www.tutoroot.com\/blog\/?p=3404"},"modified":"2023-09-11T15:11:24","modified_gmt":"2023-09-11T09:41:24","slug":"what-are-light-reaction-and-dark-reaction-definition-difference","status":"publish","type":"post","link":"https:\/\/www.tutoroot.com\/blog\/what-are-light-reaction-and-dark-reaction-definition-difference\/","title":{"rendered":"What are Light reaction And Dark reaction? &#8211; Definition, Difference"},"content":{"rendered":"<h2><strong>Introduction to Light Reaction and Dark Reaction<\/strong><\/h2>\n<p><span data-contrast=\"auto\"><a href=\"https:\/\/www.tutoroot.com\/blog\/photosynthesis-definition-diagram-process\/\"><strong>Photosynthesis<\/strong><\/a> is a remarkable process that allows plants to convert sunlight into energy, enabling them to grow and produce oxygen as a byproduct. But did you know that photosynthesis consists of two distinct stages known as light reaction and dark reaction? In this article, we will explore the definitions, functions, characteristics, and differences between these two vital components of photosynthesis. Whether you&#8217;re a curious eighth-grader or simply want to refresh your knowledge, we&#8217;ve got you covered!<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"1\"><strong>What is Light Reaction?\u00a0<\/strong><\/h2>\n<p><span data-contrast=\"auto\">The definition of Light reaction is,<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The light reaction, also known as the light-dependent reaction, is the first stage of photosynthesis. It takes place in the thylakoid membranes of the chloroplasts within the plant cells.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><strong>Light Reaction Diagram<\/strong><\/h3>\n<p><span data-contrast=\"auto\">To provide a visual representation of the light reaction, imagine a complex network of thylakoid membranes arranged in a stacked formation called grana. Within these membranes, there are chlorophyll molecules, as well as various other components such as electron carriers and enzymes.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><img loading=\"lazy\" class=\" wp-image-3406 aligncenter\" src=\"https:\/\/www.tutoroot.com\/blog\/wp-content\/uploads\/2023\/09\/Light-reaction-300x181.jpg\" alt=\"Light Reaction and Dark reaction Diagram\" width=\"414\" height=\"250\" srcset=\"https:\/\/www.tutoroot.com\/blog\/wp-content\/uploads\/2023\/09\/Light-reaction-300x181.jpg 300w, https:\/\/www.tutoroot.com\/blog\/wp-content\/uploads\/2023\/09\/Light-reaction.jpg 473w\" sizes=\"(max-width: 414px) 100vw, 414px\" \/><\/p>\n<h3 aria-level=\"2\"><strong>Functions of Light Reaction\u00a0<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The Functions of Light Reaction are,<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<ul>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"1\" data-aria-level=\"1\"><span data-contrast=\"auto\">Absorption of Light<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"2\" data-aria-level=\"1\"><span data-contrast=\"auto\">Water Splitting<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li data-leveltext=\"\uf0b7\" data-font=\"Symbol\" data-listid=\"2\" data-list-defn-props=\"{&quot;335552541&quot;:1,&quot;335559684&quot;:-2,&quot;335559685&quot;:720,&quot;335559991&quot;:360,&quot;469769226&quot;:&quot;Symbol&quot;,&quot;469769242&quot;:[8226],&quot;469777803&quot;:&quot;left&quot;,&quot;469777804&quot;:&quot;\uf0b7&quot;,&quot;469777815&quot;:&quot;hybridMultilevel&quot;}\" aria-setsize=\"-1\" data-aria-posinset=\"3\" data-aria-level=\"1\"><span data-contrast=\"auto\">ATP and NADPH Formation<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">The functions of light reaction in detailed in further lines,<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The primary function of the light reaction is to convert light energy into chemical energy in the form of ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate). Both ATP and NADPH are vital energy carriers that play a crucial role in the subsequent dark reaction.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">During the light reaction, chlorophyll molecules absorb light energy, exciting their electrons. These energized electrons are passed along a series of electron carriers embedded within the thylakoid membranes. This electron transport chain generates ATP through a process called photophosphorylation.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Furthermore, the excited electrons from chlorophyll are used to reduce NADP+ to NADPH, which will later provide the necessary reducing power for the dark reaction.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><strong>Characteristics of Light Reaction\u00a0<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The light reaction exhibits several distinctive characteristics that distinguish it from other metabolic processes:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"auto\">It occurs only in the presence of light, as it relies on the absorption of photons by chlorophyll.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">The absorbed light energy is converted into chemical energy in the form of ATP and NADPH.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">Thus, the rate of the light reaction is directly dependent on the intensity of light available.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">It takes place in the thylakoid membranes of chloroplasts.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">These membranes provide an organized structure for the components involved in the light reaction, maximizing the efficiency of energy conversion.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">It involves both non-cyclic and cyclic electron transport.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">Non-cyclic electron transport generates ATP and NADPH, while cyclic electron transport produces additional ATP.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2 aria-level=\"1\"><strong>What is Dark Reaction?\u00a0<\/strong><\/h2>\n<p><span data-contrast=\"auto\">It is the second stage of photosynthesis, the definition of dark reaction is,<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The dark reaction or the light-independent reaction, takes place in the stroma of the chloroplasts. Unlike the light reaction, the dark reaction does not rely directly on light. Instead, it uses the chemical energy stored in ATP and NADPH, produced during the light reaction.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><strong>Dark Reaction Diagram<\/strong><\/h3>\n<p><img loading=\"lazy\" class=\" wp-image-3408 aligncenter\" src=\"https:\/\/www.tutoroot.com\/blog\/wp-content\/uploads\/2023\/09\/Light-reaction-1-300x181.jpg\" alt=\"Light Reaction and Dark reaction Diagram\" width=\"380\" height=\"229\" srcset=\"https:\/\/www.tutoroot.com\/blog\/wp-content\/uploads\/2023\/09\/Light-reaction-1-300x181.jpg 300w, https:\/\/www.tutoroot.com\/blog\/wp-content\/uploads\/2023\/09\/Light-reaction-1.jpg 473w\" sizes=\"(max-width: 380px) 100vw, 380px\" \/><\/p>\n<p><span data-contrast=\"auto\">To visualize the dark reaction, picture the stroma, which is the fluid-filled space within the chloroplasts. Within the stroma, there are enzymes and other molecules responsible for carrying out the dark reaction, including the enzyme Rubisco (ribulose-1,5-bisphosphate carboxylase\/oxygenase).<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><strong>Functions of Dark Reaction\u00a0<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The Main functions of Dark reaction are,<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"auto\">Carbon Fixation<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">Glucose Formation<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">Regeneration of RuBP<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<p><span data-contrast=\"auto\">Let&#8217;s discuss the functions of Dark reaction in detail,<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The dark reaction, also called the Calvin cycle, uses ATP and NADPH produced during the light reaction to convert carbon dioxide (CO2) into glucose, a simple sugar. This process is known as carbon fixation. Rubisco, the enzyme mentioned earlier, plays a critical role in catalyzing the fixation of carbon dioxide.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The ATP and NADPH generated in the light reaction provide the necessary energy and reducing power to drive the complex set of chemical reactions involved in the dark reaction. Ultimately, the dark reaction produces glucose, which serves as a source of energy and building material for plants.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h3 aria-level=\"2\"><strong>Characteristics of Dark Reaction\u00a0<\/strong><\/h3>\n<p><span data-contrast=\"auto\">The dark reaction possesses several key features that differentiate it from the light reaction:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<ul>\n<li><span data-contrast=\"auto\">It does not directly require light energy.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">However, the chemical energy stored in ATP and NADPH, generated during the light reaction, is essential for the dark reaction to proceed.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">It takes place in the stroma of chloroplasts.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">The stroma provides an aqueous environment and acts as a site for the chemical reactions of the dark reaction.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">It involves a cycle of chemical reactions called the Calvin cycle.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">This cycle includes several intermediate compounds, such as ribulose-1,5-bisphosphate, glyceraldehyde-3-phosphate, and ribulose-5-phosphate.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<li><span data-contrast=\"auto\">These compounds undergo a series of chemical transformations to produce glucose.<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/li>\n<\/ul>\n<h2 aria-level=\"1\"><strong>Difference Between Light Reaction and Dark Reaction<\/strong><\/h2>\n<p><span data-contrast=\"auto\">The main differences between the light reaction and the dark reaction can be summarized as follows:<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"none\">Certainly! Here&#8217;s a tabular comparison between Light Reaction and Dark Reaction:<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;201341983&quot;:0,&quot;335559738&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<table style=\"height: 483px;\" width=\"766\" data-tablestyle=\"MsoNormalTable\" data-tablelook=\"1696\" aria-rowcount=\"7\">\n<tbody>\n<tr aria-rowindex=\"1\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Aspect<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:2,&quot;335551620&quot;:2,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Light Reaction<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:2,&quot;335551620&quot;:2,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Dark Reaction<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:2,&quot;335551620&quot;:2,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr aria-rowindex=\"2\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Location<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Thylakoid membranes of chloroplasts<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Stroma of chloroplasts<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr aria-rowindex=\"3\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Dependency on Light<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Requires direct light input<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Does not require direct light input, but depends on products of light reactions<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr aria-rowindex=\"4\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Products<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Oxygen gas (O2), ATP, NADPH<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Glucose and other carbohydrates<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr aria-rowindex=\"5\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Purpose<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Capture and convert light energy into chemical energy<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Use chemical energy to fix carbon dioxide and create glucose<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr aria-rowindex=\"6\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Time of Occurrence<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Occurs during the daytime when sunlight is available<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Can occur during the day or night<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<tr aria-rowindex=\"7\">\n<td data-celllook=\"4369\"><b><span data-contrast=\"none\">Rate of Occurrence<\/span><\/b><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Faster compared to dark reaction<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<td data-celllook=\"4369\"><span data-contrast=\"none\">Slower and can continue even in the absence of light<\/span><span data-ccp-props=\"{&quot;134233117&quot;:false,&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335551550&quot;:1,&quot;335551620&quot;:1,&quot;335559738&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><span data-contrast=\"none\">This table provides a concise overview of the main differences between light reactions and dark reactions in photosynthesis.<\/span><span data-ccp-props=\"{&quot;134233118&quot;:false,&quot;201341983&quot;:0,&quot;335559739&quot;:0,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"1\"><strong>Final Notes<\/strong><\/h2>\n<p><span data-contrast=\"auto\">The light reaction and the dark reaction are two interconnected processes that contribute to the overall process of photosynthesis. While the light reaction converts light energy into chemical energy, the dark reaction uses this energy to fix carbon dioxide and produce glucose.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Understanding the intricacies and differences between these reactions provides valuable insight into the fascinating ways in which plants harness and utilize energy from the sun. So, next time you witness the wondrous greenery around you, take a moment to appreciate the remarkable processes occurring within every leaf.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">This is the in-depth information of light reaction and dark reaction, Hope this article clears all information about the function of light reaction and dark reaction along with the characteristics of light reaction and dark reaction. Tutoroot offers one-on-one tuition for all the classes to various boards and exams. If you want to experience our interactive online classes, you can book a <a href=\"https:\/\/www.tutoroot.com\/web\/cbse\"><strong>FREE DEMO<\/strong><\/a> now by just clicking here.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<h2 aria-level=\"2\"><strong>FAQ<\/strong><\/h2>\n<p><b><span data-contrast=\"auto\">Where do light reactions occur?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">Light reactions take place in the thylakoid membranes of chloroplasts, which are organelles found within plant cells.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">What are the products of light-dependent reactions?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The products of light-dependent reactions are ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate), both of which serve as energy carriers.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Where does the light-independent reaction occur?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The light-independent reaction, also known as the dark reaction or the Calvin cycle, occurs in the stroma of chloroplasts.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Definition of Light Reaction?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The initial stage of photosynthesis occurs in the thylakoid membranes of chloroplasts, capturing light energy to produce ATP, NADPH, and oxygen gas.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><b><span data-contrast=\"auto\">Definition of Dark Reaction?<\/span><\/b><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n<p><span data-contrast=\"auto\">The second stage of photosynthesis, also known as the Calvin Cycle, taking place in the stroma of chloroplasts to use ATP and NADPH produced in the light reaction to fix carbon dioxide and create glucose.<\/span><span data-ccp-props=\"{&quot;201341983&quot;:0,&quot;335559739&quot;:160,&quot;335559740&quot;:259}\">\u00a0<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Introduction to Light Reaction and Dark Reaction Photosynthesis is a remarkable process that allows plants to convert sunlight into energy, enabling them to grow and produce oxygen as a byproduct. &hellip; <a href=\"https:\/\/www.tutoroot.com\/blog\/what-are-light-reaction-and-dark-reaction-definition-difference\/\" class=\"more-link\">Read More<\/a><\/p>\n","protected":false},"author":7,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>What are Light reaction And Dark reaction? 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