Question

(02.06 mc)
what evidence best supports the conversion during photosynthesis?
a light energy is converted to chemical energy during photosynthesis.
b oxygen is made from the breakdown of carbon dioxide during photosynthesis.
c energy is absorbed by chlorophyll during photosynthesis.
d the sun gives off light energy that is absorbed by plants.

question 24 (4 points)
(02.06 mc)
which process occurs during a light - independent reaction?
a a light source stimulates electrons to move through a chain of proteins called the electron transport chain.
b the reaction uses the energy from atp and nadph molecules to form glucose from carbon dioxide.
c green chlorophyll molecules absorb solar energy.
d atp and natph molecules become energy carriers for the next stage of reactions.

question 25 (4 points)
(02.06 mc)
cellular respiration is a process involving the breakdown of glucose molecules in order to generate energy for cellular activities. given the general reaction below, which of the following best describes the products labeled x and y?
c₆h₁₂o₆ + o₂→_x_+_y_+ energy
a the products are co (carbon monoxide) and h₂o₂ (hydrogen peroxide), which then decompose into carbon dioxide (co₂) and water (h₂o).
b the products are h₂o (water) and co₂ (carbon dioxide), which then undergo anaerobic respiration.
c the products are co₂ (carbon dioxide) and h₂o (water), which then become the reactants for photosynthesis.
d the products are o₂ (oxygen) and h₂o (water), which are then used for growth and to keep the organism hydrated.

Explanation:

For the first question, photosynthesis is the conversion of light energy to chemical energy, which is the best - evidence of conversion during photosynthesis. For the second question, in light - independent reactions, energy from ATP and NADPH is used to form glucose from carbon dioxide. For the third question, the general equation of cellular respiration is $C_{6}H_{12}O_{6}+O_{2}
ightarrow CO_{2}+H_{2}O + energy$, and the products $CO_{2}$ and $H_{2}O$ are used for growth and hydration.

Answer:

Question 23: a. Light energy is converted to chemical energy during photosynthesis.
Question 24: b. The reaction uses the energy from ATP and NADPH molecules to form glucose from carbon dioxide.
Question 25: c. The products are $CO_{2}$ (carbon dioxide) and $H_{2}O$ (water), which then are used for growth and to keep the organism hydrated.