Question

1. energy lost from a biological organism is usually lost as a. glucose b. co₂ c. oxygen d. heat 22. chlorophyll pigments absorb _, which in turn excite _, which then are used in reactions to generate _. a. protons; photons; atp b. protons; electrons; atp c. photons; electrons; protein d. photons; electrons; atp 23. the most common end - product of photosynthesis is: a. biofuels b. ethanol c. glucose d. lactic acid 24. which equation describes photosynthesis? a. sunlight + h₂o + co₂ → o₂ + glucose b. sunlight + co₂ → o₂ + h₂o + glucose c. sunlight + o₂ → co₂ + h₂o + glucose d. sunlight + glucose + co₂ → o₂ + h₂o 25. what is the carbon source used in photosynthesis? a. glucose b. carbon monoxide c. carbon dioxide d. organic carbon 26. the organelle responsible for carrying out photosynthesis is the _. a. golgi apparatus b. chloroplast c. lysosome d. ribosome 27. the first stage of photosynthesis converts sunlight energy into: a. heat. b. glucose. c. chemical energy. d. kinetic energy.

Explanation:

1. Photosynthesis produces glucose as a common end - product. Glucose is used for energy and building blocks in plants.
2. The overall equation of photosynthesis is sunlight + H₂O+CO₂ → O₂ + glucose. Plants use sunlight to convert water and carbon dioxide into oxygen and glucose.
3. Carbon dioxide is the carbon source used in photosynthesis. It is taken in by plants and incorporated into organic molecules.
4. Chloroplasts are the organelles responsible for carrying out photosynthesis. They contain chlorophyll and other pigments to capture light energy.
5. The first stage of photosynthesis (light - dependent reactions) converts sunlight energy into chemical energy in the form of ATP and NADPH.

Answer:

1. c. glucose
2. a. sunlight + H₂O + CO₂ → O₂ + glucose
3. b. carbon dioxide
4. b. chloroplast
5. c. chemical energy