28 Questions
What is the main source of energy for Earth?
Solar energy
Which type of organisms sustain themselves without eating anything derived from other organisms?
Photoautotrophs
What is the process wherein molecules are formed using energy from light?
Photosynthesis
Which type of organisms obtain organic material from other organisms?
Heterotrophs
Which group of organisms are the consumers and decomposers of the biosphere?
Heterotrophs
What generates the proton (H+) gradient in the linear flow of electrons?
Splitting of water by PS II
In the cyclic flow of electrons, what happens when no NADP+ is returned from the Calvin cycle?
High energy electrons damage the cell
Which process generates ATP and increases the potential energy of electrons in light reactions?
Splitting of water by PS II
What is the role of ATP and NADPH in the Calvin Cycle?
Drive Sugar Synthesis
What molecule enters the Calvin Cycle and leaves as glyceraldehyde-3-phospate (G3P)?
CO2
Is the Calvin Cycle anabolic or catabolic?
Anabolic
What is the main function of cyanobacteria?
Photosynthesis
Which organisms are classified as photoautotrophs?
Cyanobacteria
What structures do cyanobacteria possess for photosynthesis?
Thylakoid membrane with phycobilisomes
Where does photosynthesis occur in plants?
Leaves
What is the major site of conversion of light energy to chemical energy in eukaryotes?
Chloroplasts
In chloroplasts, what forms another compartment within the thylakoids?
Thylakoid space
What is the ratio of triose phosphate molecules that can be transferred out of the chloroplast to those that are produced?
1:6
How many molecules of G3P are needed to produce three 5-carbon RuBP molecules in the Calvin cycle?
6
In the Calvin cycle, how many G3P molecules are required for the net synthesis of 1 molecule of G3P?
3
How many steps in the Calvin cycle are involved in the regeneration of RuBP?
12
What molecule is required for the conversion of 5 remaining G3P molecules into three 5-carbon RuBP molecules?
ATP
What is the most abundant protein on Earth?
Rubisco
During Carbon Phosphate Reduction in the Calvin Cycle, what molecule is phosphorylated using ATP?
3-phosphoglycerate (3-PGA)
How many molecules of G3P are formed after the reduction of 3-PGA in the Calvin Cycle?
2
What happens when CO2 is added to ribulose 1,5-bisphosphate (RuBP) in the Calvin Cycle?
Formation of G3P
Which enzyme catalyzes the step where CO2 is added to ribulose 1,5-bisphosphate (RuBP) in the Calvin Cycle?
Rubisco
What is the product formed immediately after CO2 is added to ribulose 1,5-bisphosphate (RuBP)?
G3P
Learn about how photosynthesis converts solar energy into chemical energy, the main source of energy for Earth. Discover how autotrophs sustain themselves without consuming other organisms, directly or indirectly nourishing most of the living world.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
