Question 1 During the Calvin-Benson cycle (carbon-fixing reactions), in the red

Question

Question 1

During the Calvin-Benson cycle (carbon-fixing reactions), in the red Columbine plant, high-energy electrons are transferred into a newly made 3-carbon compound. Eventually, these electrons will end up as part of glucose molecules. What was the original source of these electrons in photosynthesis?

ATP

water

glucose

carbon dioxide.

oxygen

Question 2

The internal pH of most cells is near neutral. This allows

the buffers produced within the body to affect these cells.

enzymes within the cell to act at peak efficiency.

water to break down into H+ and OH-.

enzymes outside of these cells to function.

rapid fluctuations between acidic and basic conditions within the cells.

Question 3

A hummingbird is

ATP

water

glucose

carbon dioxide.

oxygen

Explanation / Answer

1-B, 2- B, 3- C. 4- B; 5- D, 6- D, 7- C, 8- E, 9- D, 10- C, 11- B, 12- D, 13- B, 14- C, 15- B, 16- C, 17- C, 18 - E, 19- E, 20- D

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