Photosynthesis vs Cellular Respiration

Questions and Answers

What is the equation for Photosynthesis?

6CO2 + 6H2O -> C6H12O6 + 6O2

What is the equation for cellular respiration?

C6H12O6 + 6 O2 → 6 CO2 + 6 H2O + ATP energy

How are photosynthesis and cellular respiration the same?

They both produce energy.

How are photosynthesis and cellular respiration different?

Photosynthesis assembles the glucose molecule and cellular respiration takes it apart. Signup and view all the answers

What are some similarities in photosynthesis and cellular respiration?

They have the same reactions occurring in reverse. Signup and view all the answers

What organelles do the two processes take place in?

Chloroplasts for photosynthesis and mitochondria for cellular respiration. Signup and view all the answers

Explain how photosynthesis and cellular respiration are the opposite of each other.

They both consume and create the same substances but in different ways. Signup and view all the answers

What is ATP?

Adenosine Triphosphate - ENERGY - is required for active transport. Signup and view all the answers

Why is ATP important?

It transports the energy necessary for all cellular metabolic activities. Signup and view all the answers

What is cellular respiration?

The series of metabolic processes by which living cells produce energy through the oxidation of organic substances. Signup and view all the answers

What is the purpose of cellular respiration?

To create usable energy from glucose. Signup and view all the answers

What is the chemical equation for cellular respiration?

C6H12O6 (glucose) + O2 (oxygen) → CO2 (carbon dioxide) + H2O (water) + ATP energy. Signup and view all the answers

What molecules are needed for cellular respiration?

Oxygen and glucose. Signup and view all the answers

What are the products of cellular respiration?

Carbon dioxide, water, and ATP. Signup and view all the answers

What processes are aerobic and what processes are anaerobic?

Aerobic respiration uses oxygen, and anaerobic respiration does not. Signup and view all the answers

Where does each step of cellular respiration take place?

Aerobic respiration occurs in the mitochondria; anaerobic respiration occurs in the cytoplasm. Signup and view all the answers

Which step of cellular respiration produces the most ATP?

The electron transport chain in the mitochondria. Signup and view all the answers

What molecules does the Krebs Cycle produce?

Two ATP molecules, ten NADH molecules, and two FADH2 molecules. Signup and view all the answers

What do NADH and FADH2 do?

They donate electrons to create water during the electron transport chain. Signup and view all the answers

What will happen if there is no oxygen?

The cell would switch to anaerobic fermentation to produce energy. Signup and view all the answers

Why do we need to breathe oxygen and how does this relate to cellular respiration?

We breathe to get oxygen for cellular energy production (ATP). Signup and view all the answers

What is the purpose of fermentation and why does it happen?

Fermentation is a process that consumes sugar without oxygen to generate energy. Signup and view all the answers

Is fermentation aerobic?

False Signup and view all the answers

Study Notes

Photosynthesis and Cellular Respiration Overview

Photosynthesis equation: 6CO2 + 6H2O → C6H12O6 + 6O2
Cellular respiration equation: C6H12O6 + 6O2 → 6CO2 + 6H2O + ATP energy

Similarities and Differences

Both processes produce energy but function oppositely.
Photosynthesis assembles glucose from carbon dioxide and water; cellular respiration breaks it down into carbon dioxide and water.
Similar overall reactions, but they occur in reverse.

Organelles and Processes

Photosynthesis occurs in chloroplasts; cellular respiration occurs in mitochondria.
Aerobic respiration requires oxygen, while anaerobic respiration does not.

ATP Importance

ATP (Adenosine Triphosphate) is essential for energy transfer in cellular activities.
It is produced during cellular respiration and is critical for metabolic processes.

Cellular Respiration Details

Cellular respiration is the series of metabolic processes that convert organic substrates into usable energy.
Purpose: To create energy from glucose.
Reactants needed: Oxygen and glucose.
Products of the process: Carbon dioxide, water, and ATP.

Krebs Cycle and Electron Transport Chain

Krebs Cycle produces two ATP, ten NADH, and two FADH2 molecules.
The electron transport chain generates the most ATP and happens in the mitochondrial inner membrane.

Fermentation

Fermentation is an anaerobic process that occurs when oxygen is absent, producing organic acids, gases, or alcohol.
Common in yeast, bacteria, and muscle cells under oxygen-starved conditions (lactic acid fermentation).

Oxygen's Role

Breathing oxygen is vital for cellular respiration, enabling cells to produce ATP.
Lack of oxygen leads cells to switch to anaerobic fermentation for energy production.

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Description

This quiz compares the processes of photosynthesis and cellular respiration. It covers key equations, similarities, and differences between these vital biological processes. Perfect for students studying biology and looking to deepen their understanding of energy transformation.