Lesson: Chapter 1 — The Chemical Basis of Life
This erases every answer in this set and starts you again at question one. Your score will be gone.
Type these four numbers to confirm:
Those numbers don't match. Look at them again and type them.
Which is the only sugar not found in plants?
The right answer is the one marked above.
Lactose — milk sugar. It is the one sugar that plants do not make.
Cow's milk is 4–6% lactose by composition; human breast milk is 6–7%. It is less sweet than sucrose, which is why milk does not taste like sugar water.
This browser is not saving your answers, so no total can be shown.
Answer the question to continue.