Q: Which of the following equations correctly represents the overall reaction for aerobic cellular respiration in eukaryotic cells?

$$\text{C}_6\text{H}_{12}\text{O}_6 + 6\ \text{O}_2 \rightarrow 6\ \text{CO}_2 + 6\ \text{H}_2\text{O} + \text{energy}$$

Q: Which equation correctly represents the overall reaction for photosynthesis?

$$6\ \text{CO}_2 + 6\ \text{H}_2\text{O} + \text{light energy} \rightarrow \text{C}_6\text{H}_{12}\text{O}_6 + 6\ \text{O}_2$$

Question 1

Which of the following equations correctly represents the overall reaction for aerobic cellular respiration in eukaryotic cells?

Accepted Answer

$$	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6\ 	ext{O}_2 ightarrow 6\ 	ext{CO}_2 + 6\ 	ext{H}_2	ext{O} + 	ext{energy}$$

Question 2

Which organelle is directly responsible for carrying out aerobic cellular respiration in eukaryotic plant cells?

Accepted Answer

Mitochondrion

Question 3

A plant is placed in complete darkness for 24 hours. Which of the following best describes the expected changes in O$$_2$$ and CO$$_2$$ levels inside the chamber?

Accepted Answer

O$$_2$$ levels decrease, CO$$_2$$ levels increase

Question 4

Which equation correctly represents the overall reaction for photosynthesis?

Accepted Answer

$$6\ 	ext{CO}_2 + 6\ 	ext{H}_2	ext{O} + 	ext{light energy} ightarrow 	ext{C}_6	ext{H}_{12}	ext{O}_6 + 6\ 	ext{O}_2$$

Question 5

If the rate of cellular respiration remains constant, how can you calculate the rate of photosynthesis using CO$$_2$$ measurements from light and dark experiments?

Accepted Answer

CO$$_2$$ during photosynthesis = CO$$_2$$ during light experiment - CO$$_2$$ during dark experiment

Question 6

During the experiment, a positive slope ($$m) $$for CO$$_2$$ rate in the dark indicates:

Accepted Answer

CO$$_2 is $$being produced by cellular respiration

Question 7

Which of the following best explains why O$$_2$$ levels increase when spinach leaves are exposed to light?

Accepted Answer

Photosynthesis produces O$$_2 as a $$byproduct of water splitting

Question 8

A student wraps the Bio-Chamber with aluminum foil and measures gas exchange. Which process is primarily being measured?

Accepted Answer

Cellular respiration only

Question 9

If the O$$_2$$ rate ($$m) $$measured in the light is 0.5 and in the dark is -0.2, what is the O$$_2$$ rate due to photosynthesis?

Accepted Answer

$$0.5 - (-0.2) = 0.7$$

Question 10

Which of the following statements best describes the relationship between photosynthesis and cellular respiration in plants?

Accepted Answer

Photosynthesis produces glucose and O$$_2$$, which are used in cellular respiration; cellular respiration produces CO$$_2$$ and H$$_2O$$, which are used in photosynthesis

Question 11

Why do plant cells perform cellular respiration?

Accepted Answer

To break down glucose and release energy for metabolic activities

Question 12

In the experiment, why is it important to avoid overlapping spinach leaves in the Bio-Chamber?

Accepted Answer

To ensure all leaves are equally exposed to light or dark conditions

Question 13

If a plant is exposed to light, which of the following best describes the net change in CO$$_2$$ and O$$_2$$ levels, assuming photosynthesis exceeds cellular respiration?

Accepted Answer

CO$$_2$$ decreases, O$$_2$$ increases

Question 14

Which of the following best describes the biological significance of a negative rate for O$$_2 in $$the dark?

Accepted Answer

O$$_2 is $$being consumed by cellular respiration

Question 15

A scientist wants to measure the rate of photosynthesis in a plant. Which of the following would be the most direct indicator?

Accepted Answer

Increase in O$$_2$$ concentration

Question 16

During the experiment, why is it necessary to calibrate the O$$_2$$ and CO$$_2$$ sensors before collecting data?

Accepted Answer

To ensure accurate measurement of gas concentrations

Question 17

If the slope ($$m) of $$the CO$$_2$$ graph in the light is less than in the dark, what does this indicate about the plant's activity?

Accepted Answer

Photosynthesis is consuming CO$$_2$$, reducing its net production

Question 18

Which of the following best explains why plants can survive in the dark for a limited time?

Accepted Answer

They use stored glucose for cellular respiration

Question 19

A student calculates the rate of photosynthesis using the formula $$	ext{O}_2\ 	ext{during photosynthesis} = 	ext{O}_2\ 	ext{during light experiment} - 	ext{O}_2\ 	ext{during dark experiment}. If $$the O$$_2$$ rate in the light is 0.4 and in the dark is -0.1, what is the rate of photosynthesis?

Accepted Answer

$$0.4 - (-0.1) = 0.5$$

Photosynthesis and Cellular Respiration: Lab Study Guide

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