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Photosynthesis: An Overview Trivia Quiz

It should be well-known that photosynthesis is the process through which plants use the energy of sunlight to convert water and carbon dioxide into high-energy carbohydrates- sugars and starches- and oxygen, a waste product. Do you know a little more?

A multiple-choice quiz by luvtheheaven. Estimated time: 6 mins.

Author
luvtheheaven

Time
6 mins

Type
Multiple Choice

Quiz #
219,983

Updated
Dec 03 21

# Qns
10

Difficulty
Tough

Avg Score
6 / 10

Plays
2370

Last 3 plays: idontkare (7/10), Guest 71 (8/10), Guest 174 (4/10).

One at a Time - Single Page - Timed Game

Question 1 of 10

1. Yesterday you were explaining colors in an essay to your science teacher. You expounded for your science teacher, Mrs. Greene, that most plants appear green because chlorophyll (the principal pigment in plants)... Hint

...reflects violet light.

...refracts red light.

...absorbs green light.

...absorbs very little green light.

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Question 2 of 10

2. Tomorrow you will be collecting the gas given off from a plant in bright sunlight at a temperature of 27 degrees Celsius. The gas to be collected will probably be... Hint

...ATP.

...carbon dioxide.

...CO.

...oxygen.

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Question 3 of 10

3. Pretend that in 300 years, science class with Mrs. Greene will consist of students becoming plants for an hour! These plant-students would have to gather the sun's energy with light-absorbing molecules called... Hint

...pigments.

...chloroplasts.

...thylakoids.

...glucose.

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Question 4 of 10

4. You're the smartest person in Mrs. Greene's class! Today you participated and accurately stated that the overall equation for photosynthesis is six molecules of ______
_______ plus six molecules of water (with the energy of light) produce one molecule of glucose and six molecules of oxygen.

Answer: (Two Words)

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Question 5 of 10

5. Mrs. Greene asked you how the Calvin cycle differs from light-dependent reactions. What could you say? Hint

It takes place in the thylakoid.

It requires light.

It takes place in the stroma.

It takes place in the chloroplasts.

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Question 6 of 10

6. You thought you had memorized what happened during the reactions of photosynthesis, but Mrs. Greene took off one point from your homework, saying that "Not all of these are steps in the light-dependent reactions". Which is NOT a step in the light-dependent reactions? Hint

ATP synthase (a protein that allows hydrogen molecules to pass throughthe thylakoid membrane) allows hydrogen ions to pass through the thylakoid membrane.

High-energy electrons move through the electron transport chain.

Pigments in photosystem II absorb light.

ATP (a principal chemical compound cells use to store/release energy) and NADPH (an electron carrier) are used to produce high-energy sugars.

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Question 7 of 10

7. In 300 years, students not only will turn into plants for an hour, but will be able to conduct experiments on other planets! The newly discovered planet Q will be identical to Earth, except for the complete absence of carbon dioxide. (Minor detail, right?) But if carbon dioxide is completely removed from a plant's environment, what would you expect to happen to the plant's production of high-energy sugars? Hint

Carbon dioxide does not affect the production of high-energy sugars in plants.

More sugars will be produced.

No sugars will be produced.

The same number of sugars will be produced.

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Question 8 of 10

8. Mrs. Greene tells you that a chloroplast (a photosynthetic organelle) contains stroma (where the Calvin cycle or light-independent reactions take place). A thylakoid (saclike photosynthetic membrane) contains chlorophyll (a plant's principal pigment). A granum (stack of thylakoids) contains several thylakoids. But wait- is the stroma the space outside the thylakoid membranes?

Yes

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Question 9 of 10

9. Mrs. Greene required that every student place a plant in a heated oven as a homework assignment. What would you expect to happen to most plants at temperatures greater than 45 degrees Celsius? Hint

They will have a very high rate of photosynthesis.

They will have a high rate of photosynthesis if light intensity is also great.

They will have an optimal rate of photosynthesis if water is available.

They will have a less than optimal rate of photosynthesis.

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Question 10 of 10

10. Suppose, as a long term project, you are trying to recreate your favorite scientist's experiment. You light a candle and watch the flame gradually go out when you put a glass jar over it. Then you place a live sprig of mint under the jar and notice that the candle flame burns longer. Whose experiment did you recreate? Hint

Jan van Helmont (who found that plant's gain most of their mass from water)

Melvin Calvin (who worked out the details of the light-independent reactions)

Jan Ingenhousz (who found that plants only produce oxygen when exposed to light)

Joseph Priestly (who found that plants release oxygen)

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Dec 16 2024 : idontkare: 7/10
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Quiz Answer Key and Fun Facts

Answer: ...absorbs very little green light.

Chlorophyll is what absorbs the sun's energy, but it is mainly in the blue and red regions of the spectrum that chlorophyll can absorb light.

2. Tomorrow you will be collecting the gas given off from a plant in bright sunlight at a temperature of 27 degrees Celsius. The gas to be collected will probably be...

Answer: ...oxygen.

During cellular respiration, the equation for which is the opposite of photosynthesis, cells take in oxygen and release carbon dioxide. Photosynthesizing plant cells, however, take in carbon dioxide and water, and release oxygen. ATP is the abbreviated form of adenosine triphosphate, and is one of the principal chemical compounds that cells use to store and release energy.

Answer: ...pigments.

If you separate the pigments found in a typical plant cell's chloroplasts, you will find green, orange, and red pigments. By the way, chloroplasts aren't molecules, they're organelles of a cell. And it's the pigments within the chloroplasts that absorb the light- not the chloroplasts themselves! (I seem to be stumping people with this question- but that wasn't my intent!)

4. You're the smartest person in Mrs. Greene's class! Today you participated and accurately stated that the overall equation for photosynthesis is six molecules of ______ _______ plus six molecules of water (with the energy of light) produce one molecule of glucose and six molecules of oxygen.

Answer: carbon dioxide

The opposite is the equation for cellular respiration: six molecules of oxygen plus one molecule of glucose produces six molecules of carbon dioxide and six molecules of water.

5. Mrs. Greene asked you how the Calvin cycle differs from light-dependent reactions. What could you say?

Answer: It takes place in the stroma.

The Calvin cycle is another name for the light-independent reactions. The stroma is the region outside the thylakoid membranes. Thylakoids, located within chloroplasts (where photosynthesis takes place), are saclike photosynthetic membranes.

Answer: ATP (a principal chemical compound cells use to store/release energy) and NADPH (an electron carrier) are used to produce high-energy sugars.

The light-dependent reactions take place within the thylakoid membranes. During the light-dependent reactions, pigments in photosystem II (discovered after photosystem I) absorb light. Next, high-energy electrons move through the electron transport chain from photosystem II to photosystem I. Energy from the electrons is used to transport hydrogen ions from the stroma into the inner thylakoid space.

Answer: No sugars will be produced.

Taking away all light and extreme decreases in temperature also would stop the high-energy sugar production.

Answer: Yes

The stroma is the region outside the thylakoid membranes. It contains many thylakoid membranes. The light-independent reactions (Calvin cycle) take place in the stroma, while the light-dependent reactions take place within the thylakoid membrane. ATP synthase, photosystem I, and the electron transport chain are all within the thylakoid membrane.

9. Mrs. Greene required that every student place a plant in a heated oven as a homework assignment. What would you expect to happen to most plants at temperatures greater than 45 degrees Celsius?

Answer: They will have a less than optimal rate of photosynthesis.

There is an optimal temperature for photosynthesis, and any higher or lower than that will decrease the rate. Temperatures too small or great can actually kill cells, as cells are made up of mostly water and water evaporates at high temperatures and freezes at low temperatures.

Answer: Joseph Priestly (who found that plants release oxygen)

The English minister Joseph Priestly found that plants produce the substance from the air required for a candle to burn (oxygen). Jan Ingenhousz later showed that this happened only when plants were exposed to light by observing aquatic plants producing oxygen bubbles only when exposed to light.

Source: Author luvtheheaven

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