Combined Science: Trilogy 8464: B4.Bioenergetics Topical Past Paper Questions

This question is about photosynthesis. 1 What is the symbol equation for photosynthesis? Tick (✓) one box. [1 mark] $$ \begin{aligned}&6CO_{2}+C_{6}H_{12}O_{6}\quad\rightarrow\quad6H_{2}O+6O_{2}\\&C_{6}H_{12}O_{6}+6O_{2}\quad\rightarrow\quad6CO_{2}+6H_{2}O\\&6CO_{2}+6H_{2}O\quad\…

Light intensity varies during 24 hours. Figure 6 shows the overall exchange of carbon dioxide and oxygen for a tree at three different light intensities. Figure 6 Bright light Dim light No light Key Carbon dioxide → Oxygen Explain the overall exchange of carbon dioxide and oxygen…

Photosynthesis is an important chemical reaction in plants. 1 Why is light needed for photosynthesis? [1 mark] 2 What is the equation for photosynthesis? Tick (✓) one box. [1 mark] $$ \begin{aligned}&C_{6}H_{12}O_{6}+CO_{2}\rightarrow6O_{2}+6H_{2}O\\ &\begin{aligned}\\ &CO_{2}+H_…