Biology Flashcards: Identify Photosynthesis Reactants And Products

What this deck covers

This deck focuses on Identify Photosynthesis Reactants And Products, giving you a quick way to review the definitions, rules, and examples that matter most for Biology.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Which atoms from $CO_2$ appear in glucose: carbon, hydrogen, or both?

Answer: Carbon (and oxygen) atoms from $CO_2$. Carbon from $CO_2$ forms the backbone structure of glucose.

Flashcard 2: Which reactant is split during the light-dependent reactions to supply electrons?

Answer: Water ($H_2O$). Water photolysis provides electrons to replace those lost by chlorophyll.

Flashcard 3: What are the reactants of photosynthesis in the overall chemical equation?

Answer: Carbon dioxide ($CO_2$) and water ($H_2O$). These are the starting materials that get consumed in photosynthesis.

Flashcard 4: What are the products of photosynthesis in the overall chemical equation?

Answer: Glucose ($C_6H_{12}O_6$) and oxygen gas ($O_2$). These are the end materials produced by photosynthesis.

Flashcard 5: What is the balanced overall equation for photosynthesis (including light energy)?

Answer: $6CO_2 + 6H_2O + \text{light} \rightarrow C_6H_{12}O_6 + 6O_2$. This shows the complete balanced equation with energy input.

Flashcard 6: Which side of the photosynthesis equation contains the reactants: left or right?

Answer: Left side. Reactants always appear before the arrow in chemical equations.

Flashcard 7: Which side of the photosynthesis equation contains the products: left or right?

Answer: Right side. Products always appear after the arrow in chemical equations.

Flashcard 8: Which reactant must be fixed (incorporated into organic molecules) during photosynthesis?

Answer: Carbon dioxide ($CO_2$). Carbon fixation incorporates atmospheric $CO_2$ into organic compounds.

Flashcard 9: Which product of photosynthesis comes specifically from splitting water?

Answer: Oxygen gas ($O_2$). Oxygen gas is released when water molecules are photolyzed.

Flashcard 10: Identify the substance that is reduced in photosynthesis: $CO_2$ or $O_2$.

Answer: $CO_2$ is reduced. Carbon dioxide gains electrons when it is converted to glucose.

Flashcard 11: Identify the substance that is oxidized in photosynthesis: $H_2O$ or $CO_2$.

Answer: $H_2O$ is oxidized. Water loses electrons when it is split in the light reactions.

Flashcard 12: Which atoms from $H_2O$ appear in glucose: hydrogen, carbon, or neither?

Answer: Hydrogen atoms from $H_2O$. Hydrogen atoms from water are incorporated into glucose molecules.

Flashcard 13: Which atoms from $CO_2$ appear in glucose: carbon, hydrogen, or both?

Answer: Carbon (and oxygen) atoms from $CO_2$. Carbon from $CO_2$ forms the backbone structure of glucose.

Flashcard 14: What are the organic products of photosynthesis listed in the overall equation?

Answer: Glucose ($C_6H_{12}O_6$). Glucose is the only organic compound produced in the overall equation.

Flashcard 15: What are the inorganic reactants of photosynthesis?

Answer: $CO_2$ and $H_2O$. Both are simple inorganic molecules that serve as starting materials.

Flashcard 16: Which substance is produced during photosynthesis: $H_2O$ or $O_2$?

Answer: $O_2$ is produced. $O_2$ is a product that gets made during photosynthesis.

Flashcard 17: Which substance is consumed during photosynthesis: $O_2$ or $CO_2$?

Answer: $CO_2$ is consumed. $CO_2$ is a reactant that gets used up during photosynthesis.

Flashcard 18: Identify the product of photosynthesis that serves as the terminal electron acceptor in aerobic respiration.

Answer: Oxygen gas ($O_2$). Oxygen accepts electrons at the end of the electron transport chain.

Flashcard 19: Identify the product of photosynthesis that is commonly used by cells for aerobic respiration.

Answer: Glucose ($C_6H_{12}O_6$). Glucose serves as the primary fuel for cellular respiration.

Flashcard 20: Identify the reactant typically absorbed by roots and transported to leaves for photosynthesis.

Answer: Water ($H_2O$). Roots absorb water from soil and transport it to photosynthetic tissues.

Flashcard 21: Identify the reactant that enters leaves through stomata for photosynthesis.

Answer: Carbon dioxide ($CO_2$). Stomata are pores that allow gas exchange in leaves.

Flashcard 22: Which pair correctly lists the products of photosynthesis: ($CO_2$, $H_2O$) or ($O_2$, $C_6H_{12}O_6$)?

Answer: ($O_2$, $C_6H_{12}O_6$). These are the two substances produced in photosynthesis.

Flashcard 23: Which pair correctly lists the reactants of photosynthesis: ($CO_2$, $H_2O$) or ($O_2$, $C_6H_{12}O_6$)?

Answer: ($CO_2$, $H_2O$). These are the two substances consumed in photosynthesis.

Flashcard 24: In photosynthesis, what is the role of light energy in the overall equation: reactant or product input?

Answer: Energy input (written on the reactant side). Light provides the energy needed to drive the endergonic reaction.

Flashcard 25: In the balanced equation, how many molecules of $O_2$ are produced per glucose formed?

Answer: $6$ molecules of $O_2$. Six $O_2$ molecules result from splitting six water molecules.

Flashcard 26: In the balanced equation, how many molecules of $H_2O$ are required to produce one glucose?

Answer: $6$ molecules of $H_2O$. Six water molecules provide electrons and hydrogen for one glucose.

Flashcard 27: In the balanced equation, how many molecules of $CO_2$ are required to produce one glucose?

Answer: $6$ molecules of $CO_2$. Six carbon atoms are needed to build one glucose molecule.

Flashcard 28: Which molecule is a product of the light-dependent reactions: $O_2$ or $CO_2$?

Answer: $O_2$. Light reactions split water and release $O_2$ as a byproduct.

Flashcard 29: Which molecule is a reactant for the Calvin cycle: $CO_2$ or $O_2$?

Answer: $CO_2$. The Calvin cycle uses $CO_2$ as raw material for sugar synthesis.

Flashcard 30: Which stage directly requires light energy: light reactions or Calvin cycle?

Answer: Light-dependent reactions. Light reactions capture and convert light energy into chemical energy.