AnswersLHS Biology 1Unit Test

Unit Test Answers

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1
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What happens when light energy excites electrons in photosystem II?

A
Oxygen ions are released into the thylakoid space.
B
Water molecules are created.
C
Electrons are released into the electron transport system.
D
Hydrogen is released as waste.
2
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What did you include in your response?

A
Joseph Priestly observed that a candle alone in a jar did not stay lit for long.
B
Priestly observed that adding a plant to the jar caused the candle to stay lit longer.
C
Priestly inferred that plants give off oxygen during photosynthesis, providing the oxygen needed for the candle to burn.
D
Priestly inferred that the burning candle gave off carbon dioxide, which was used by the plant.

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Unit Test Answers — LHS Biology 1