II. Experiment: Effect of Concentration on the Rate of Diffusion in a Semisolid Number of cystal 1. The graph above displays the data from this experiment. a. Identify the dependent variable. Y b. Identify the independent variable. c. Identify 3 contrlled variables from this experiment.
II. Experiment: Effect of Concentration on the Rate of Diffusion in a Semisolid Number of cystal 1. The graph above displays the data from this experiment. a. Identify the dependent variable. Y b. Identify the independent variable. c. Identify 3 contrlled variables from this experiment.
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
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Please help with number one, if possible, and look over my answers. Thank you.
![### III. Experiment: Effect of Concentration on the Rate of Diffusion in a Semisolid
#### Graph Analysis
The graph below displays data from an experiment analyzing the rate of diffusion.
![Graph]
1. **Graph Details**:
- **Dependent Variable**: The variable being measured is the rate of diffusion.
- **Independent Variable**: The variable being manipulated is the number of crystals.
- **Controlled Variables**: Three controlled variables in this experiment include:
1. Temperature
2. Volume of the semisolid medium
3. Type of solute used
2. **Concentration and Diffusion Rate**:
- Conclusion: The greater the concentration of solute, the lower the diffusion rate.
#### Factors Affecting Diffusion Rate
Let's look at some examples highlighting how different factors affect the rate of diffusion.
**Example 1: Agar Plate Diffusion**
- **Visual - Agar Plate**:
![Agar Plate with Three Particles]
- Three particles of different substances with varying molecular weights were placed in wells cut into agar. After 15 minutes, it's clear that the substances did not diffuse at the same rate.
**Question**: Which substance (A, B, or C) has the smallest molecular weight?
- **Answer**: **B**
- **Explanation**: The rate of diffusion is affected by weight. The higher the weight of the substance, the slower the rate of diffusion. Substance "B" has diffused faster than "A" and "C", indicating it has the smallest molecular weight.
#### Effect of Temperature on Diffusion
**Graph Analysis: Diffusion of Potassium Permanganate**
- **Graph Description**:
![Graph: Diffusion of Potassium Permanganate]
- The graph shows the percentage diffused over time at different temperatures (10°C, 24°C, 32°C).
- **Observation**: The % diffused at 60 minutes and notes the differences based on temperature.
**Statement Completion**:
- Using the data in the graph, complete this sentence about the effect of temperature on the rate of diffusion: The higher the temperature, the faster the diffusion rate.
**Graph Details**:
- **Dependent Variable**: % diffused (Y-axis)
- **Independent Variable**: Time in minutes (X-axis)
This educational material helps understand how concentration, molecular weight, and temperature affect](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F88d58220-4c99-4038-b9cd-5ff14daeb0cb%2Fb19c99ce-1bab-4b39-9a94-bba736f8e690%2F5mb3fv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:### III. Experiment: Effect of Concentration on the Rate of Diffusion in a Semisolid
#### Graph Analysis
The graph below displays data from an experiment analyzing the rate of diffusion.
![Graph]
1. **Graph Details**:
- **Dependent Variable**: The variable being measured is the rate of diffusion.
- **Independent Variable**: The variable being manipulated is the number of crystals.
- **Controlled Variables**: Three controlled variables in this experiment include:
1. Temperature
2. Volume of the semisolid medium
3. Type of solute used
2. **Concentration and Diffusion Rate**:
- Conclusion: The greater the concentration of solute, the lower the diffusion rate.
#### Factors Affecting Diffusion Rate
Let's look at some examples highlighting how different factors affect the rate of diffusion.
**Example 1: Agar Plate Diffusion**
- **Visual - Agar Plate**:
![Agar Plate with Three Particles]
- Three particles of different substances with varying molecular weights were placed in wells cut into agar. After 15 minutes, it's clear that the substances did not diffuse at the same rate.
**Question**: Which substance (A, B, or C) has the smallest molecular weight?
- **Answer**: **B**
- **Explanation**: The rate of diffusion is affected by weight. The higher the weight of the substance, the slower the rate of diffusion. Substance "B" has diffused faster than "A" and "C", indicating it has the smallest molecular weight.
#### Effect of Temperature on Diffusion
**Graph Analysis: Diffusion of Potassium Permanganate**
- **Graph Description**:
![Graph: Diffusion of Potassium Permanganate]
- The graph shows the percentage diffused over time at different temperatures (10°C, 24°C, 32°C).
- **Observation**: The % diffused at 60 minutes and notes the differences based on temperature.
**Statement Completion**:
- Using the data in the graph, complete this sentence about the effect of temperature on the rate of diffusion: The higher the temperature, the faster the diffusion rate.
**Graph Details**:
- **Dependent Variable**: % diffused (Y-axis)
- **Independent Variable**: Time in minutes (X-axis)
This educational material helps understand how concentration, molecular weight, and temperature affect
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