Given a scientific passage and an answer, generate a question for the given answer.

[EX Q]: Passage: Types of neurons include sensory neurons, motor neurons, and interneurons. Answer: interneurons
[EX A]: Types of neurons include sensory neurons, motor neurons, and?

[EX Q]: Passage: Chemical reactions constantly occur inside the cells of living things. However, under the conditions inside cells, most biochemical reactions would occur too slowly to maintain life. That's where enzymes come in. Enzymes are catalysts in living things. Like other catalysts, they speed up chemical reactions. Enzymes are proteins that are synthesized in the cells that need them, based on instructions encoded in the cells' DNA. Answer: enzymes
[EX A]: What proteins synthesized in cells act as catalysts?

[EX Q]: Passage: Monotreme reproduction is the least risky for the mother. However, eggs are harder to protect than is an embryo or a fetus in a pouch or uterus. Therefore, monotreme offspring may have a lower chance of surviving than the offspring of therian mammals. Answer: monotreme
[EX A]:
What kind of mammalian reproduction is risky for the offspring but not the mother?