Multiple Choice
Which molecule is produced by the light-independent reactions (Calvin Cycle) in photosynthesis?
1. A Review of General Chemistry
Intro to Organic Chemistry
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In the context of organic chemistry, what is the primary role of NADH and FADH2?
A
They act as electron carriers in cellular respiration.
B
They are involved in the storage of genetic information.
C
They function as structural components in cell membranes.
D
They serve as catalysts in the synthesis of proteins.
Verified step by step guidance1
Begin by understanding the context of cellular respiration, which is a metabolic process that converts biochemical energy from nutrients into ATP, and involves the transfer of electrons.
Recognize that NADH and FADH2 are crucial molecules in this process, primarily acting as electron carriers. They transport electrons to the electron transport chain, a series of complexes located in the inner mitochondrial membrane.
NADH and FADH2 are reduced forms of NAD+ and FAD, respectively. During metabolic reactions, they accept electrons and become reduced, which is essential for their role as electron carriers.
In the electron transport chain, NADH and FADH2 donate the electrons they carry, which are then passed through a series of proteins and coenzymes. This electron transfer is coupled with the pumping of protons across the mitochondrial membrane, creating a proton gradient.
The energy from the proton gradient is used to synthesize ATP from ADP and inorganic phosphate via ATP synthase. This process is known as oxidative phosphorylation, highlighting the importance of NADH and FADH2 in energy production.
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