An is any large molecule or small organism whose entry into the body provokes synthesis of an antibody or immunoglobin.

Which are forms of nitrogen that are usable by humans

Genetic disorders can result when sister chromatids fail to seperate properly. during what phase is this problem most likely to occur?

Rarefaction is used for which of the following? a. creating a representative sample b. studying how disease impacts populations c. rediscovering species thought to be instinct d. determining which sea creatures live in an area