Question

1. phase 1: the cell takes in __________ gas from the atmosphere. this step is called carbon ________. 9. phase 2: atp and nadph are used to ________ the carbon molecules. this leaves left over adp and nadp+. 10. phase 3: regeneration occurs to reform rubp. note: the calvin cycle must repeat six times to make one molecule of glucose (c₆h₁₂o₆). 11. look back at your photosynthesis equation. what reactants of the main equation went into the light independent reaction? (circle all that apply!) carbon dioxide water sunlight glucose oxygen atp nadph click the “next” or right - side arrow to move to the next section. cellular respiration the balanced equation is ________ + ________ ________ + ________ + ________ cellular respiration is a set of reactions which occurs in three steps. step 1: ________, step 2: ________, and step 3: __________ step 1: glycolysis

Explanation:

Question 8

The Calvin Cycle (light - independent reactions of photosynthesis) starts with the intake of carbon dioxide ($\ce{CO_2}$) from the atmosphere. This process is called carbon fixation. So the gas taken in is carbon dioxide.

In the Calvin Cycle (Phase 2), ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate) are used to convert or reduce the carbon molecules (from the fixed carbon dioxide) into more complex organic compounds like glyceraldehyde - 3 - phosphate (G3P). The main process here is to reduce the carbon molecules.

The main photosynthesis equation is $\ce{6CO_2 + 6H_2O + light energy -> C_6H_{12}O_6 + 6O_2}$. The light - independent reactions (Calvin Cycle) use carbon dioxide ($\ce{CO_2}$) as a reactant. Water is used in the light - dependent reactions to produce ATP and NADPH, but the light - independent reactions use the ATP and NADPH produced from the light - dependent reactions (which used water and light). Wait, the question is about the reactants of the main equation that went into the light - independent reaction. The light - independent reaction (Calvin Cycle) uses carbon dioxide. ATP and NADPH are produced in the light - dependent reactions (using water and light), but the reactants of the main photosynthesis equation that are directly used in the light - independent reaction is carbon dioxide. Wait, let's re - evaluate. The main equation's reactants are $\ce{CO_2}$, $\ce{H_2O}$, and light. The light - independent reaction (Calvin Cycle) uses $\ce{CO_2}$. ATP and NADPH are not reactants of the main equation (they are products of the light - dependent reactions). So from the given options: CARBON DIOXIDE is a reactant of the main equation and is used in the light - independent reaction. Water is a reactant of the main equation, but it is used in the light - dependent reactions (to split and make ATP and NADPH). But the question is which reactants of the main equation went into the light - independent reaction. So carbon dioxide is one. Wait, maybe I made a mistake. Let's think again. The light - independent reactions (Calvin Cycle) take in $\ce{CO_2}$ (from the main equation's reactants). ATP and NADPH are produced in the light - dependent reactions (using water and light from the main equation's reactants). But the question is about the reactants of the main equation that went into the light - independent reaction. So the reactants of the main equation are $\ce{CO_2}$, $\ce{H_2O}$, and light. The light - independent reaction uses $\ce{CO_2}$. So among the given options: CARBON DIOXIDE is a reactant of the main equation and is used in the light - independent reaction. ATP is not a reactant of the main equation (it's a product of light - dependent reactions). NADPH is also a product of light - dependent reactions. So the correct one to circle is CARBON DIOXIDE.

Answer:

carbon dioxide

Question 9