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Photosynthesis Core Concepts
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1
Question
What organisms use the process of photosynthesis to convert sunlight into chemical energy?
Page 4
Answer
Plants, some bacteria, and some Protists
2
Question
What type of energy does photosynthesis convert from sunlight?
Page 4
Answer
Chemical energy
3
Question
Why is photosynthesis considered one of the most important processes on the planet?
Page 4
Answer
It produces oxygen and sugars that support almost all life on this planet
4
Question
What is the balanced chemical equation for photosynthesis as shown in the notes?
Page 5
Answer
$6 ext{CO}_2 + 6 ext{H}_2 ext{O} \rightarrow ext{C}_6 ext{H}_{12} ext{O}_6 + 6 ext{O}_2$
5
Question
What are the reactants in the photosynthesis equation?
Page 5
Answer
6 carbon dioxide and 6 water molecules
6
Question
What are the products of the photosynthesis equation?
Page 5
Answer
Sugar (glucose) and 6 oxygen molecules
7
Question
How are the molecules rearranged in photosynthesis?
Page 5
Answer
6 CO₂ molecules and 6 H₂O molecules are chemically rearranged into one glucose molecule and 6 oxygen molecules
8
Question
Where does photosynthesis happen mostly in plants?
Page 5
Answer
In the leaves
9
Question
How does carbon dioxide enter the leaf during photosynthesis?
Page 5
Answer
From surrounding air
10
Question
Where does water enter the plant for use in photosynthesis?
Page 5
Answer
From the roots
11
Question
How does oxygen leave the leaf after photosynthesis?
Page 5
Answer
To surrounding air
12
Question
What are two possible uses for the sugar produced by photosynthesis?
Page 5
Answer
Used directly by the plant for energy or stored for later use
13
Question
What two structural features help leaves perform photosynthesis efficiently?
Page 6
Answer
Thin structure and large surface area
14
Question
What organelles do leaf cells contain for photosynthesis?
Page 6
Answer
Chloroplasts
15
Question
What is the primary function of stomata on leaves?
Page 6
Answer
Control of water loss and inward diffusion of carbon dioxide
16
Question
What type of leaf structure is diagrammed in the notes?
Page 7
Answer
Dicot leaf
17
Question
What covers the upper surface of a dicot leaf?
Page 7
Answer
Cuticle
18
Question
What layer lies just below the upper epidermis in a dicot leaf?
Page 7
Answer
Palisade mesophyll
19
Question
Which leaf tissue contains the most chloroplasts for photosynthesis?
Page 7
Answer
Palisade mesophyll
20
Question
What causes the top of a leaf to often appear darker green than the bottom?
Page 7
Answer
Palisade mesophyll contains the most chloroplasts filled with chlorophyll
21
Question
How do spongy mesophyll cells compare to palisade mesophyll cells in chloroplasts?
Page 7
Answer
Fewer cells and fewer chloroplasts
22
Question
What transport tissue carries water in leaf veins?
Page 7
Answer
Xylem
23
Question
What transport tissue carries sugars away from leaf veins?
Page 7
Answer
Phloem
24
Question
What cells surround and control the stoma in a dicot leaf?
Page 7
Answer
Guard cells
25
Question
Where are stomata typically located in a dicot leaf?
Page 7
Answer
In the lower epidermis
26
Question
What are the small dark green circles in palisade mesophyll cells?
Page 7
Answer
Chloroplasts where photosynthesis takes place
27
Question
What green pigment fills chloroplasts in palisade mesophyll cells?
Page 7
Answer
Chlorophyll
28
Question
In a typical plant cell, what is the site of photosynthesis?
Page 8
Answer
Chloroplasts
29
Question
According to the cartoon on page 2, what simplistic process does photosynthesis perform for plants?
Page 2
Answer
Take in carbon dioxide and convert it into oxygen
30
Question
How does the detailed equation on page 5 differ from the cartoon definition on page 2?
Page 5
Answer
Includes water as reactant and glucose as product, not just CO₂ to O₂