Question

1. molecules of water combine with molecules of carbon dioxide to form one molecule of glucose.

1, 1
2, 2
4, 4
6, 6
8, 8

1. simple forms of carbohydrates are called sugars.

true
false

Explanation:

For question 18, the photosynthesis equation shows that 6 molecules of water and 6 molecules of carbon - dioxide combine to form one molecule of glucose. For question 19, simple carbohydrates are indeed called sugars.

Answer:

1. D. 6, 6
2. True