If an egg cell were treated with EDTA, a chemical that binds calcium and magnesium ions, a. the acrosomal reaction would be blocked. b. the fusion of sperm and egg nuclei would be blocked. c. the fast block to polyspermy would not occur. d. the fertilization envelope would not form.

Video transcript

Hi everyone. Now I'll be looking at the problem. Which one is not true about E. D. T. A. So we gotta remember to focus on the fact that we're looking for a false answer here. When we take a quick look over our choices, we need to notice that choice D. Is all of these. So there is a possibility that all three A. B. And C. Choices will be false. So let's just keep that in mind as we work through this. So let's look at choice A. It is a chemical that binds calcium and magnesium ions. Well this is true. E. D. T. A. Is a chemical it is called a key leading agent. It binds calcium and magnesium ions. So let's move onto choice B. B. Says it blocks the formation of the fertilization envelope, calcium and magnesium are necessary to form the fertilization envelope. That's the barrier that blocks further sperm from coming in after an egg has been fertilized. So this is also true. E. D. T. A. Will block that formation by binding the calcium and magnesium ions necessary for that. So let's move on to choice. See it is not water soluble. Well E. D. T. A. Is water soluble compound. So this is false. So now we know that choice D. Cannot be correct because we do have one false answer again. We're looking for a false answer. So let's eliminate A. And B. Which are true. And we have a correct answer C. It is not water soluble. This is false. About 80 to and we are looking for a false answer. So choice C is correct. See you in the next video.