The chemical formula of glucose is:

Find next number: 8, 12, 16, 20, ?

Find missing number: 3, 6, 12, 24, ?, 96

Five houses in a row are painted different colors. The green house is immediately to the left of the white house. The red house is at one end. The blue house is between the yellow and red houses. The yellow house is at the other end from red. What color is the middle house?

Which type of cell lacks a true nucleus?

Which base pairs with Adenine in DNA?