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Unit 4: Bioenergetics
4.1 Photosynthesis
4.1.1 The Photosynthesis Reaction
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Cards (30)
What are the reactants of photosynthesis?
Carbon dioxide and water
Carbon dioxide is absorbed from the atmosphere during
photosynthesis
.
True
Where does water get absorbed by the plant for photosynthesis?
Roots
Match the reactants with their role in photosynthesis:
Carbon dioxide ↔️ Provides carbon atoms
Water ↔️ Replaces lost electrons
Water is absorbed by the plant's leaves during photosynthesis.
False
The balanced chemical equation for photosynthesis is
6
C
O
2
+
6CO_{2} +
6
C
O
2
+
6
H
2
O
→
C
6
H
12
O
6
+
6H_{2}O \rightarrow C_{6}H_{12}O_{6} +
6
H
2
O
→
C
6
H
12
O
6
+
6
O
2
6O_{2}
6
O
2
True
Oxygen is released as a byproduct during the production of
glucose
Water absorbed by the roots is used to produce glucose during
photosynthesis
.
True
Plants take in carbon dioxide from the
atmosphere
What is the role of water in photosynthesis?
Reactant
What is the primary role of chlorophyll in photosynthesis?
Absorbs light energy
Carbon dioxide is a reactant in photosynthesis and is taken in from the
atmosphere
Arrange the following steps of photosynthesis in the correct order:
1️⃣ Carbon dioxide is taken in from the atmosphere
2️⃣ Water is absorbed by the plant roots
3️⃣ Sunlight provides energy
4️⃣ Chlorophyll absorbs light
5️⃣ Glucose is produced
6️⃣ Oxygen is released
What does the balanced chemical equation for photosynthesis demonstrate?
Conversion of CO₂ and H₂O into glucose and O₂
Which two types of light do chlorophyll absorb most effectively?
Red and blue
The balanced chemical equation for photosynthesis is
6CO2
What role does sunlight play in photosynthesis?
Provides energy
Oxygen is released into the atmosphere as a byproduct of
photosynthesis
.
True
Glucose is an energy-rich
carbohydrate
What is the source of carbon dioxide for photosynthesis?
Atmosphere
What is the chemical formula for glucose?
C
6
H
12
O
6
C_{6}H_{12}O_{6}
C
6
H
12
O
6
Steps of photosynthesis: From reactants to products
1️⃣ Water is absorbed by the roots
2️⃣ Carbon dioxide enters the leaves
3️⃣ Sunlight provides energy
4️⃣ Chlorophyll absorbs sunlight
5️⃣ Glucose and oxygen are produced
What is the balanced chemical equation for photosynthesis?
6
C
O
2
+
6CO_{2} +
6
C
O
2
+
6
H
2
O
→
C
6
H
12
O
6
+
6H_{2}O \rightarrow C_{6}H_{12}O_{6} +
6
H
2
O
→
C
6
H
12
O
6
+
6
O
2
6O_{2}
6
O
2
The balanced chemical equation for photosynthesis shows that 6 molecules of water produce 6 molecules of oxygen.
True
In photosynthesis, carbon dioxide is used to produce
glucose
Sunlight provides the energy needed to convert carbon dioxide and water into
glucose
and oxygen.
True
What is one of the products of photosynthesis that plants use as a source of energy?
Glucose
The balanced chemical equation for photosynthesis shows that 6 molecules of water produce 6 molecules of
oxygen
In photosynthesis, water is absorbed by the
roots
Oxygen produced during photosynthesis is essential for aerobic respiration in organisms.
True