photosynthesis

The equation below shows the process of photosynthesis.

Carbon dioxide + Water → ? + Oxygen

What forms of energy are entering and exiting this process?

• Chemical energy is entering, and light energy is exiting.

• Wind energy is entering, and light energy is exiting.

• Light energy is entering, and chemical energy is exiting.

• Thermal energy is entering, and electrical energy is exiting.

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In addition to carbon dioxide, which molecules are used in the Calvin cycle's production of sugars?

• water and oxygen

• ADP and NADP

• light and oxygen

• ATP and NADPH

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An experimental setup is shown in the diagram below.

Which hypothesis would

most likely be tested using this setup?

• Do plants continue to grow in the absence of light?

• Do green plants need light for cell division to occur?

• Do green water plants release a gas in the presence of light?

• Do the roots of water plants absorb minerals in the absence of light?

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he picture shows a leaf found on an autotrophic plant.

The cells in this leaf are making their own energy by the process of

• respiration, where oxygen and sunlight at Q and R are taken in and then converted into carbon dioxide and glucose at

  S and T.

• photosynthesis, where carbon dioxide and sunlight at Q and R are taken in and then converted into glucose and

  oxygen at S and T

• photosynthesis, where glucose and oxygen at Q and R are taken in and then converted into water vapor and thermal

  energy at S and T.

• respiration, where carbon dioxide and oxygen at Q and R are taken in and then converted into thermal energy and

  methane gas at S and T.

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Leaves of green plants contain openings known as stomata. These are opened and closed by specialized cells that allow

gases to be exchanged between the leaf and the outside environment.

Which of the following best describes the flow of gases into and out of a leaf through stomata on a sunny day?

• Carbon dioxide moves in; oxygen moves out.

• Carbon dioxide and oxygen move in; ozone moves out.

• Water vapor and ozone move in; carbon dioxide moves out.

• Oxygen moves in; nitrogen moves out.

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A student views the diagram of a process that occurs within a cell.

Which question can the student answer using the diagram?

• Where is water stored in the process of cellular respiration?

• What are the inputs and outputs in the process of photosynthesis?

• Where is glucose stored after it is created through photosynthesis?

• What is the ratio of glucose and water created through cellular respiration?

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The diagram below shows an investigation performed over a period of 12 hours.

The gas released in this investigation can be used in cellular respiration to form an energy-storing compound. What is the name of this compound?

• DNA

• H2O

• CO2

• ATP

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Which of the following graphs correctly shows chloroplasts' role in photosynthesis?

• 
• 
• 
• 

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Directions:

The picture below shows a microscopic view of plant cells with a green structure, labeled X. Use the picture to answer any questions that follow.

Which chemical equation represents what is taking place at X?

• carbon dioxide + water + sunlight → sugars + oxygen

• oxygen + water + minerals → sugars + carbon dioxide + Sunlight

• oxygen + water + sunlight → carbon dioxide + water

• carbon dioxide + minerals + water → oxygen + sunlight

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where does photosynthesis take place

• animals

• bacteria

• plants

• humans

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