Question
A student is studying how flowering plants and insects affect oxygen (O2) and carbon dioxide (CO2) concentrations in the air.
Part A
Match the process on the left with the description on the right
(1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Photosynthesis
Cellular Respiration
Question 2
Part B
During an experiment, the student measured the initial concentrations of O2 and CO2 in three flasks, added organisms to some of the flasks, sealed the flasks, and placed them under a light. After 12 hours, the student measured the concentrations of O2 and CO2 in the flasks. The results for each flask are shown in the table.
Row Flask
Contents Initial O2
Concentration
(%) Final O2
Concentration
(%) Initial CO2
Concentration
(ppm)* Final CO2
Concentration
(ppm)*
1 ? 20.8 20.8 373 375
2 ? 20.9 19.6 371 454
3 ? 20.7 22.1 374 267
*parts per million
During the experiment, the student had forgotten to identify the contents of each flask. Each of the three flasks contained one of the following: two plants and one insect; one insect; or no organisms.
Identify the contents of each flask based on the data in rows 1, 2, and 3.
(3 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Flask 1
Flask 2
Flask 3
Question 3
Part C
Explain your reasoning using data from the table and the processes you identified in Parts A and B. Include the row numbers in your response.
(3 points)
0 / 10000 Word Limit
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Part A
Match the process on the left with the description on the right
(1 point)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Photosynthesis
Cellular Respiration
Question 2
Part B
During an experiment, the student measured the initial concentrations of O2 and CO2 in three flasks, added organisms to some of the flasks, sealed the flasks, and placed them under a light. After 12 hours, the student measured the concentrations of O2 and CO2 in the flasks. The results for each flask are shown in the table.
Row Flask
Contents Initial O2
Concentration
(%) Final O2
Concentration
(%) Initial CO2
Concentration
(ppm)* Final CO2
Concentration
(ppm)*
1 ? 20.8 20.8 373 375
2 ? 20.9 19.6 371 454
3 ? 20.7 22.1 374 267
*parts per million
During the experiment, the student had forgotten to identify the contents of each flask. Each of the three flasks contained one of the following: two plants and one insect; one insect; or no organisms.
Identify the contents of each flask based on the data in rows 1, 2, and 3.
(3 points)
Put responses in the correct input to answer the question. Select a response, navigate to the desired input and insert the response. Responses can be selected and inserted using the space bar, enter key, left mouse button or touchpad. Responses can also be moved by dragging with a mouse.
Flask 1
Flask 2
Flask 3
Question 3
Part C
Explain your reasoning using data from the table and the processes you identified in Parts A and B. Include the row numbers in your response.
(3 points)
0 / 10000 Word Limit
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Answers
GPT-4o mini
### Part A
**Process Matching:**
1. **Photosynthesis** - This process uses carbon dioxide (CO2) and releases oxygen (O2).
2. **Cellular Respiration** - This process uses oxygen (O2) and releases carbon dioxide (CO2).
---
### Part B
**Identifying Flask Contents:**
- **Flask 1:** No organisms
- **Flask 2:** One insect
- **Flask 3:** Two plants and one insect
---
### Part C
**Explanation:**
In the experiment, the initial and final concentrations of oxygen (O2) and carbon dioxide (CO2) are critical for determining the contents of each flask.
- **Row 1 (Flask 1):** The O2 concentration remained unchanged (20.8% to 20.8%), and the CO2 concentration slightly increased (373 ppm to 375 ppm). This indicates that no photosynthesis occurred, and the minimal change in CO2 suggests that there was no respiration either. Therefore, Flask 1 must contain **no organisms**.
- **Row 2 (Flask 2):** The O2 concentration decreased from 20.9% to 19.6%, while CO2 increased from 371 ppm to 454 ppm. The decrease in O2 and the increase in CO2 suggests that aerobic respiration occurred, which would be expected from **one insect**.
- **Row 3 (Flask 3):** The O2 concentration increased from 20.7% to 22.1%, and the CO2 concentration dropped from 374 ppm to 267 ppm. The increase in O2 and the decrease in CO2 indicate that photosynthesis was taking place, which is consistent with the presence of **two plants and one insect**.
So, the identified contents of the flasks based on the data are:
- Flask 1: No organisms
- Flask 2: One insect
- Flask 3: Two plants and one insect
**Process Matching:**
1. **Photosynthesis** - This process uses carbon dioxide (CO2) and releases oxygen (O2).
2. **Cellular Respiration** - This process uses oxygen (O2) and releases carbon dioxide (CO2).
---
### Part B
**Identifying Flask Contents:**
- **Flask 1:** No organisms
- **Flask 2:** One insect
- **Flask 3:** Two plants and one insect
---
### Part C
**Explanation:**
In the experiment, the initial and final concentrations of oxygen (O2) and carbon dioxide (CO2) are critical for determining the contents of each flask.
- **Row 1 (Flask 1):** The O2 concentration remained unchanged (20.8% to 20.8%), and the CO2 concentration slightly increased (373 ppm to 375 ppm). This indicates that no photosynthesis occurred, and the minimal change in CO2 suggests that there was no respiration either. Therefore, Flask 1 must contain **no organisms**.
- **Row 2 (Flask 2):** The O2 concentration decreased from 20.9% to 19.6%, while CO2 increased from 371 ppm to 454 ppm. The decrease in O2 and the increase in CO2 suggests that aerobic respiration occurred, which would be expected from **one insect**.
- **Row 3 (Flask 3):** The O2 concentration increased from 20.7% to 22.1%, and the CO2 concentration dropped from 374 ppm to 267 ppm. The increase in O2 and the decrease in CO2 indicate that photosynthesis was taking place, which is consistent with the presence of **two plants and one insect**.
So, the identified contents of the flasks based on the data are:
- Flask 1: No organisms
- Flask 2: One insect
- Flask 3: Two plants and one insect