Multiple Choice
Which statement is true for both photosynthesis and cellular respiration?
21
views
9. Photosynthesis
Introduction to Photosynthesis
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which gas do plants absorb from the atmosphere during photosynthesis?
A
Methane ($\mathrm{CH_4}$)
B
Nitrogen ($\mathrm{N_2}$)
C
Oxygen ($\mathrm{O_2}$)
D
Carbon dioxide ($\mathrm{CO_2}$)
Verified step by step guidance1
Understand the process of photosynthesis: Photosynthesis is the process by which plants convert light energy into chemical energy stored in glucose. This process occurs in the chloroplasts of plant cells and requires specific inputs from the environment.
Identify the key reactants in photosynthesis: The main reactants are carbon dioxide ($\mathrm{CO_2}$) from the atmosphere and water ($\mathrm{H_2O}$) absorbed by the plant roots. These reactants are used to produce glucose ($\mathrm{C_6H_{12}O_6}$) and oxygen ($\mathrm{O_2}$).
Recall the chemical equation for photosynthesis: The general equation is:
$\mathrm{6CO_2 + 6H_2O + light \rightarrow C_6H_{12}O_6 + 6O_2}$. This shows that carbon dioxide ($\mathrm{CO_2}$) is absorbed from the atmosphere during the process.
Eliminate incorrect options: Methane ($\mathrm{CH_4}$) is not involved in photosynthesis, nitrogen ($\mathrm{N_2}$) is primarily used in nitrogen fixation, and oxygen ($\mathrm{O_2}$) is a product of photosynthesis, not a reactant.
Conclude that the correct answer is carbon dioxide ($\mathrm{CO_2}$), as it is the gas absorbed by plants from the atmosphere during photosynthesis.
3:32mWatch next
Master Introduction to Photosynthesis with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Introduction to Photosynthesis practice set
Problem sets built by lead tutorsExpert video explanations