Lesson Worksheet: Structure of the Chloroplast Biology
In this worksheet, we will practice describing the structure of the chloroplast and explaining how the chloroplast is adapted for its function.
Q1:
What is the primary role of the stroma in the chloroplast?
- ATo provide the site for the light-independent stage of photosynthesis
- BTo provide the site for the light-dependent stage of photosynthesis
- CTo connect, and allow communication between, the thylakoids
- DTo provide a membrane to which photosynthetic pigments can attach
Q2:
What is the primary role of the thylakoids in the chloroplast?
- ATo control what substances can enter and leave the cell
- BTo provide the site for the light-dependent stage of photosynthesis
- CTo provide the site for the stages of aerobic respiration
- DTo provide the site for the light-independent stage of photosynthesis
Q3:
How are the thylakoids adapted for their function?
- AThylakoids contain photosynthetic pigments within their membrane to absorb light.
- BThylakoids have a small surface-area-to-volume ratio, so reactions can occur more quickly.
- CThylakoids have a double membrane that allows them to control what enters and leaves the chloroplast.
- DThylakoids contain specialized enzymes that carry out the process of respiration.
Q4:
Which of the following statements correctly links the grana to the thylakoids?
- ADisklike structures called thylakoids form stacks called grana.
- BCircular grana come together in stacks to form a single thylakoid.
- CA single thylakoid cell is formed of multiple grana components.
Q5:
What is the primary function of a photosystem in a chloroplast?
- ATo reflect visible light and attract pollinators
- BTo absorb heat energy for metabolic reactions
- CTo act as the site of light-independent photosynthetic reactions
- DTo absorb light energy for photosynthesis
Q6:
Which of the following tables correctly matches structures within the chloroplast to the photosynthetic reaction that occurs in each?
- A
Structure Stroma Lamellae Reaction Light-dependent reaction Light-independent reaction - B
Structure Inner membrane Outer membrane Reaction Light-dependent reaction Light-independent reaction - C
Structure Chloroplast envelope Stroma Reaction Light-dependent reaction Light-independent reaction - D
Structure Thylakoid Stroma Reaction Light-dependent reaction Light-independent reaction
Q7:
Which of the following would not be classified as a photosynthetic pigment in plants?
- AChlorophyll b
- BXanthophylls
- CCarotenoids
- DChlorophyll a
- EMelanin
Q8:
What component within the chloroplast is responsible for capturing the light energy required for photosynthesis?
- AThe outer membrane
- BChlorophyll
- CThe vacuole
- DStarch granules
Q9:
The diagram shows an absorption spectrum for the pigment of chlorophyll . Which wavelengths of light does chlorophyll absorb the most?
- AGreen and blue
- BGreen and yellow
- CViolet and orange
- DOrange only
Q10:
The diagram shows an absorption spectrum for the pigment of chlorophyll . Which wavelength of light does chlorophyll reflect the most?
- AGreen
- BIndigo
- CDark blue
- DOrange
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