TASK DEFINITION: Given a scientific question, generate a correct answer to it.
PROBLEM: What structure consists of an outer layer of cells called the trophoblast and an inner cell mass called the embryoblast?

SOLUTION: blastocyst

PROBLEM: A complementary pair of chromosomes have genes for the same characteristics in the same location on the chromosome are known as?

SOLUTION: homologous chromosomes

PROBLEM: Some materials have negative heats of solution; the dissolution of one of these solutes in water is called?

SOLUTION:
exothermic process