Histamines are chemicals released by the body as an allergic response.They help the body by reacting when their are "intruders" so when enters, histamine acts as a messenger and sends out a signal for the body to create a reaction helping to get rid of teh intruder through some type of reaction.
First one is C) A phosphate group is added, and the second is D) Kreb's cycle
A biome is a large community of plants and animals that is in a area with a distinct region. There are 5 major types of biomes worldwide. These are aquatic, desert, forest, grassland, and tundra. Hope this answers the question. Have a nice day.
I believe CODIS still exist because if there is anything new about DNA in a laboratory, it will go straight to CODIS>
The name you're looking for is Gregor Mendel. He first saw it in his experiments with peas that had different traits (leaves, stem, colour, texture) etc.
Hope it helps!