Comparing photosynthesis and cellular respiration answer key – Embark on a comprehensive exploration of photosynthesis and cellular respiration, unraveling their intricate processes, contrasting their key distinctions, and delving into their profound significance for life on Earth.
Photosynthesis and cellular respiration, two fundamental biological processes, play a pivotal role in sustaining the delicate balance of our planet’s ecosystems. Photosynthesis, the process by which plants harness sunlight to convert carbon dioxide and water into glucose, provides the foundation for the food chain and releases oxygen into the atmosphere.
Cellular respiration, on the other hand, is the process by which organisms break down glucose to generate energy, powering the myriad of activities that sustain life.
Photosynthesis
Photosynthesis is a vital process by which plants and other organisms convert light energy into chemical energy, producing glucose and releasing oxygen as a byproduct. It occurs in the chloroplasts of plant cells and involves the absorption of sunlight by chlorophyll, a green pigment.
The process of photosynthesis can be summarized by the following equation:
6CO 2+ 6H 2O + light energy → C 6H 12O 6+ 6O 2
This equation shows that carbon dioxide and water are the raw materials for photosynthesis, while glucose and oxygen are the products. Light energy is required to drive the reaction.
Steps of Photosynthesis, Comparing photosynthesis and cellular respiration answer key
The process of photosynthesis can be divided into two main stages:
- Light-dependent reactions:These reactions occur in the thylakoid membranes of chloroplasts and involve the absorption of light energy by chlorophyll. This energy is used to split water molecules, releasing oxygen and generating ATP and NADPH.
- Light-independent reactions (Calvin cycle):These reactions occur in the stroma of chloroplasts and use the ATP and NADPH generated in the light-dependent reactions to convert carbon dioxide into glucose.
A simplified diagram of the steps of photosynthesis is shown below:
Helpful Answers: Comparing Photosynthesis And Cellular Respiration Answer Key
What is the primary product of photosynthesis?
Glucose
What is the main purpose of cellular respiration?
To generate energy (ATP)
Where does photosynthesis occur?
In the chloroplasts of plant cells
Where does cellular respiration occur?
In the mitochondria of all living cells
