CBE500 Biochemistry Lab UITM Assignment Answer Malaysia

The CBE500 Biochemistry Lab at UITM (Universiti Teknologi MARA) in Malaysia provides students with hands-on experience and essential techniques used in biochemistry. Through practical tools and fundamental methods, students gain valuable skills to conduct experiments, analyze biological molecules, and explore various biochemical processes. 

This CBE500 course aims to equip students with the necessary laboratory skills and knowledge to better understand the complexities of biochemistry and its applications in the scientific field.

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Assignment Task 1 :Perform experiments, which are related to the fundamental study covered in the biochemistry course.

For the fundamental study in biochemistry, we can focus on investigating enzyme kinetics. Enzymes are biological catalysts that play a crucial role in various biochemical reactions. The experiment we will conduct is measuring the effect of substrate concentration on the rate of an enzyme-catalyzed reaction.

Experimental Procedure:

Select an enzyme and a specific substrate for the reaction. For example, we can use the enzyme “catalase” and its substrate “hydrogen peroxide.”

Prepare a series of test tubes with varying concentrations of the substrate. Use distilled water to create different dilutions of the substrate solution, ranging from low to high concentrations.

Label the test tubes accordingly, indicating the concentration of the substrate in each tube.

Prepare an enzyme solution with a constant concentration. Ensure the enzyme solution is handled with care to maintain its activity.

Start the experiment by adding the enzyme solution to each test tube containing the different substrate concentrations.

Start a timer as soon as the enzyme and substrate are mixed. Allow the reaction to proceed for a specific duration (e.g., 1 minute).

After the specified time, stop the reaction by adding a suitable stopping agent (e.g., sulfuric acid) to each test tube.

Measure the amount of product formed (e.g., oxygen gas released) in each test tube. This can be done using various techniques like gas volume measurements or colorimetric methods.

Record the data obtained from the experiment, including the reaction rates at different substrate concentrations.

Assignment Task 2 : Develop well-structured experimental methodologies for open ended investigations 

Introduction: 

In this experiment, we will delve into the fascinating world of enzymes and their vital role in biochemical reactions. We aim to study enzyme kinetics, which helps us understand how different factors influence enzyme activity. Specifically, we will investigate how varying substrate concentrations impact the rate of enzyme-catalyzed reactions.

Materials and Methods:

To conduct this experiment, we’ll need some essential materials such as enzymes (we’ll use “catalase”) and its substrate (“hydrogen peroxide”). We’ll also require test tubes, pipettes, a stopwatch, and a suitable stopping agent (e.g., sulfuric acid).

We’ll start by preparing a range of substrate solutions with different concentrations. To do this, we’ll dilute the substrate solution using distilled water, creating solutions with low to high substrate concentrations.

Next, we’ll prepare the enzyme solution with a constant concentration. We’ll handle the enzyme solution carefully to maintain its effectiveness throughout the experiment.

The reaction will be set up by adding the enzyme solution to each test tube containing the various substrate concentrations. We’ll start a timer as soon as the two are mixed and allow the reaction to proceed for a specific duration, let’s say 1 minute.

To stop the reaction, we’ll add the appropriate stopping agent to each test tube. We’ll then measure the amount of product formed in each tube, which can be achieved through methods like gas volume measurements or colorimetric techniques.

Data Collection and Analysis:

 Once the experiment is complete, we’ll record all the data obtained, including the reaction rates at different substrate concentrations. We’ll organize the data in tables and create graphs or charts to visualize the relationship between substrate concentration and reaction rate.

During analysis, we’ll calculate the reaction rates and carefully examine the trends and patterns observed in the data. Additionally, any unexpected findings or possible errors will be discussed. We’ll relate the results to the fundamental concepts of biochemistry and enzyme kinetics.

Safety Considerations: 

Ensuring safety is of utmost importance. We’ll be mindful of any potential hazards associated with the materials or procedures used in the experiment. Adequate safety guidelines will be followed to prevent accidents or mishaps.

Experimental Design: 

Our aim is to understand how substrate concentration influences enzyme activity. We’ll keep certain factors constant (enzyme concentration, temperature, and pH) to ensure accurate results. The independent variable is the substrate concentration, and the dependent variable is the reaction rate.

Discussion:

 In the discussion section, we’ll talk about whether the experimental results support or contradict our initial hypothesis. We’ll analyze the data and provide insights into the significance of the observed trends. Any limitations encountered during the experiment will be acknowledged, and we’ll propose improvements for future investigations. Moreover, we’ll explore potential directions for further research based on our findings.

Conclusion:

 To sum up, this experiment will give us valuable insights into the behavior of enzymes and their reactions concerning varying substrate concentrations. Understanding enzyme kinetics is crucial in many biological processes, and our findings may contribute to broader knowledge in the field of biochemistry.

Remember to use appropriate citations for references and provide a bibliography listing all consulted sources. Properly documenting the experiment will ensure its credibility and encourage others to replicate and build upon our work.

Assignment Task 3 : Evaluate the experimental results with the theories and interpret the data.

Results:

• Present the recorded data in the form of tables, graphs, or charts, as appropriate.
• Clearly display the relationship between substrate concentration and reaction rate.
• Include all relevant observations made during the experiment.

Discussion:

• Compare the obtained results with the expected outcomes based on the hypothesis.
• Analyze the trends observed in the data and their significance.
• Discuss any deviations or unexpected findings and possible sources of errors.
• Relate the results to the relevant biochemistry concepts and theories.

Conclusion:

• Summarize the key findings of the experiment.
• State whether the hypothesis was supported or rejected and explain why.
• Discuss the implications of the results in the context of enzyme kinetics and biochemical reactions.

Limitations and Future Directions:

• Address any limitations or constraints faced during the experiment.
• Suggest potential improvements to the methodology for future investigations.
• Propose further research opportunities based on the obtained results.

Remember to adhere to standard scientific writing conventions, use appropriate citations for references, and include a bibliography of sources consulted. Properly documenting the experiment will help ensure the reproducibility and validity of the study.

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