Answers41111de1 ECAD Fall 2026 - Q2 - NM-Biology - S1Light Independent Reactions in Photosynthesis

Light Independent Reactions in Photosynthesis — Unit test Answers

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What is carbon fixation, and how does it relate to photosynthesis?

A
It is the absorption of CO2 from the air, and it occurs during the light-dependent reactions.
B
It is the reduction of CO2, and it occurs during the Calvin cycle.
C
It is the conversion of CO2 into organic compounds, and it forms 3-PGA.
D
It is the production of CO2 during regeneration, and it forms RuBP.
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Which question can be answered by following the scientific method?

A
What was the highest temperature that was recorded yesterday?
B
What is the most interesting aspect of the light-dependent reactions?
C
How does a change in temperature affect the stomata of a plant?
D
How many stomata are there on this leaf?
3

The Venn diagram compares aerobic respiration and anaerobic respiration.Which statement could be categorized in the overlapping section of the Venn diagram?

Question illustration
A
uses pyruvic acid
B
has commercial uses
C
regenerates NADH
D
produces 36 ATP
4

Which of the following is an inference?

A
A burning candle is extinguished when it is covered with a jar.
B
The candle burns longer than expected in a jar that has a plant in it.
C
A plant lives longer than expected in a jar that has a burning candle.
D
There is more oxygen in the jar because there is a plant in it.
5

Which statement best distinguishes the light-dependent (L-D) reactions from the light-independent (L-IND) reactions?

A
The L-D reactions occur in the thylakoid membrane, and the L-IND reactions occur in the stroma.
B
The L-D reactions occur in the cytoplasm, and the L-IND reactions occur in the chloroplast.
C
The L-D reactions occur in the chloroplast, and the L-IND reactions occur in the mitochondria.
D
The L-D reactions occur in the stroma, and the L-IND reactions occur in the cytoplasm.

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