Ha, Heredity!|When the mother is Rh- & the child is Rh+, the Rh antigens produced by the mother may cross the placenta. When the second fetus is also Rh+, the antigens are already formed, so they are much more likely to attack the fetus (risk increases with successive children). Exactly! Also would...

YES!!!
Very good! You got exactly what I wanted.
Your turn!

Yay

Explain the dangers of a mother being Rh- and her fetus being Rh+ and explain why usually only the second child is at risk.

Yep. Azuritemalachite got the genus, and Fantasyfan got the class. One of you guys can go, then.

I'll let azuritemalachite go

Since the last time I've posted here my list has been updated: Atonement by Ian McEwan A Separate Peace by John Knowles Siddhartha by Herman Hesse Illusions by Richard Bach Rogues (short story collection) compiled by George RR Martin I have unfortunately not read many good fantasy books recently, I'...

Hey, so this is what I did to select the section to be modeled. First, did I do it correctly? Second, how do you manipulate it to get it to display the amino acid numbers for the alpha helices, beta pleated sheets and key amino acids? Looks correct to me! I don't believe that there is a specific fu...

What is the function or the CCR5 protein, and how does the Δ32 mutation help prevent HIV infection of a cell?

Briefly describe primary, secondary, tertiary, and quaternary structure of proteins. What level of structure does the following protein have? Describe where you see each level of structure present and how you know certain levels do not apply to this protein. I hope nobody minds If I respond again t...

Answer (Click to Show Hidden Text)

Cysteine (Cys, C) and Methionine (Met, M) both contain sulfur. Cysteine forms disulfide bonds. Methionine cannot form disulfide bonds because the sulfur it contains is connected to a methyl group.

Exactly correct, your turn!

I guess I'll just ask a question to get the marathon up and running again... Which of the leukocytes primarily target parasites, and how do they (leukocytes) destroy them (parasites)? I only know the first part, but i believe it is...|Eosinophils, and for the second part I'm going to guess|Phagocyt...

I'm surprised nobody's started this one up yet, but here goes nothing...
Today's question comes to you in three parts:

Name the two amino acids that contain sulfur and their one and three letter abbreviations,

Identify which one forms a disulfide bond

Explain why the other aa can't form such a bond