Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

Phototaxis is the term for movement toward light.
What is the term for movement toward light?

Antibodies recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms.
Which proteins recognize and combine with harmful materials, including both toxic chemicals and invasive microorganisms?

Leukemia is the most common type of cancer developed in children.

What is the most common type of cancer developed in children?