To carry out its role, each transfer RNA requires at least four specific recognition sites that must be inherent in its tertiary structure. What are they?

Video transcript

Hi everyone. Let's look at our next question. It says, how is an amino acid linked to the three prime except a region of the T. R. N. A. Well, we recall that that little three prime end of our T. R. N. A. Has an unvarying sequence at the end and that the amino acid comes in and is bound here. That is done by means of an enzyme or group of enzymes called amino a seal T RNA synthesis. And there's multiple ones because they're specific to the one amino acid that's being bound, matching with its specific code on. So each amino acid has its own amino a silty RNA synthesis. When that amino acid is bound to the T. R. N. A. Let's put that up here. Here's our C C A. N. This is our T RNA end here and it's with this a cl or ester bond and here goes on to our amino acid here. So this type of bond here is we're going to look at choice B covalin bonding. So it forms a Covalin bond between the T. R. N. A. And the amino acid. When we look at our other answer choices, um it's not a hydrogen bond. The atoms are actually sharing electrons, not just partial positive and negative charges, attracting each other. So that's not our answer. It's not choice C ionic bonding, Nothing has a charge here. It's not choice dee Vander wal's interactions. These are just those interactions when you have a temporary change in the electron density around you. Adam that allows an atom to be temporarily attracted to um one of a the opposite charge. But those are very weak and transitory and not what we're talking about here. So it's the amino acid is linked to that three prime, except a region of the T. R. N. A. By choice B. Covalin bonding. See you in the next video.