photosynthesis Flashcards
(27 cards)
What is photosynthesis?
The process by which green plants, algae, and some bacteria convert light energy into chemical energy in the form of glucose.
True or False: Photosynthesis occurs only in the presence of sunlight.
True
What are the two main stages of photosynthesis?
Light-dependent reactions and the Calvin cycle (light-independent reactions).
Fill in the blank: The primary pigment involved in photosynthesis is __________.
chlorophyll
Where in the plant cell does photosynthesis primarily occur?
In the chloroplasts.
What is the main product of photosynthesis?
Glucose.
What gas is taken in by plants during photosynthesis?
Carbon dioxide (CO2).
What gas is released as a byproduct of photosynthesis?
Oxygen (O2).
Which wavelengths of light do chlorophyll absorb most effectively?
Blue and red wavelengths.
True or False: The Calvin cycle does not require light.
True
What is the role of water in photosynthesis?
Water provides electrons and protons, and is split during the light-dependent reactions.
Multiple choice: Which of the following is NOT a reactant in photosynthesis? A) Glucose B) Carbon dioxide C) Water D) Light
A) Glucose
What is the equation for photosynthesis?
6 CO2 + 6 H2O + light energy → C6H12O6 + 6 O2
Fill in the blank: Photosynthesis primarily takes place in the __________ of plant leaves.
mesophyll
What is the purpose of the light-dependent reactions?
To convert solar energy into chemical energy in the form of ATP and NADPH.
True or False: Photosynthesis is important for the survival of all living organisms.
True
What is the role of ATP and NADPH in photosynthesis?
They provide the energy and reducing power needed for the Calvin cycle.
Multiple choice: Which of the following organisms perform photosynthesis? A) Animals B) Fungi C) Plants D) All of the above
C) Plants
How does the structure of chloroplasts facilitate photosynthesis?
Chloroplasts have a double membrane and thylakoid membranes that create a large surface area for light absorption.
What is photolysis?
The process of splitting water molecules into oxygen, protons, and electrons during the light-dependent reactions.
Fill in the blank: The __________ is the part of the chloroplast where the Calvin cycle takes place.
stroma
What factors can affect the rate of photosynthesis?
Light intensity, carbon dioxide concentration, temperature, and water availability.
True or False: Only plants can perform photosynthesis.
False
What is the significance of photosynthesis in the ecosystem?
It produces oxygen and organic compounds that are essential for life.
