How does the second variation of nicotinamide adenine dinucleotide, called NADP, differ in structure from NAD?
AIt carries an extra ribose sugar
BIt carries an extra adenine base
CIt carries an extra magnesium ion
DIt carries an extra phosphate group
Answer & Solution
Correct answer: D. It carries an extra phosphate group
1. NAD and NADP are close relatives built on the same nucleotide backbone.
2. NADP contains an extra phosphate group, and that phosphate is the whole structural difference.
3. That small change routes NADP into a different job, anabolic reactions and photosynthesis.
4. No extra sugar, base or metal ion is added to make NADP from NAD.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 7 "Cellular Respiration", section 7.1 Energy in Living Systems_
Related questions
In type 2 diabetes the oxidation efficiency of NADH is reduced, which affects:Where does the carbon dioxide released during cellular respiration come from?The citric acid cycle is described as amphibolic because its intermediates can also be useHydrogen ions pumped by the electron transport chain accumulate in the:The mobile carrier connecting the first and second complexes to the third is:How many complexes make up the electron transport chain?Making ATP by chemiosmosis is called oxidative phosphorylation because the process involveChemiosmosis accounts for roughly what share of the ATP made during glucose catabolism?