Biology IA Exemplar: How do different varying temperatures (10.0,… | RevisionDojo

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IB Biology SL Internal Assessment Example

How do different varying temperatures (10.0, 20.0, 30.0,40.0 and 50.0 ± 0.05 ℃ ) affect the rate(mg/dL·min⁻¹ ) at which lactase breaks down lactose, measured through glucose concentration (mg/dl) generated in a duration of 5 mins?SL

Official IB Result

IB Grade: 7

Criteria A: Research Design

6/6

Criteria StrandsPro

A.1Research question context

Excellent

A.2Methodological considerations

Good

A.3Methodology description

Moderate

Criteria Feedback

The student's research question is focused, quantitative, and clearly linked to a real biological application.
The student defines the key variables well, including temperature, reaction time, and glucose production rate.
The student's introduction gives the investigation a clear scientific and practical purpose.

Some background material is broader than needed and could be trimmed to better support the investigation.
The justification for the chosen temperature intervals could be explained more clearly.
A few methodological details are missing or underdeveloped, which weakens reproducibility.

Criteria B: Data Analysis

6/6

Criteria StrandsPro

B.1Communication of data recording and processing

Good

B.2Consideration of uncertainties

Moderate

B.3Data processing quality

Good

Criteria Feedback

The student's raw data are clearly organised and repeated measurements are presented for each temperature.
The student calculates means, rates, standard deviations, and SEM values, which shows substantial processing of the data.
The student's graph communicates the overall temperature trend well.

Some uncertainty statements are not precise enough and include unit problems.
The analysis relies too much on a linear correlation for a relationship that is expected to be non-linear.
The processing would be stronger if uncertainties were consistently carried through into the calculated rates and graph labels.

Criteria C: Conclusion

5/6

Criteria StrandsPro

C.1Conclusion relevance and consistency

Moderate

C.2Scientific context comparison

Moderate

Criteria Feedback

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Criteria D: Evaluation

4/6

Criteria StrandsPro

D.1Methodological weaknesses

Good

D.2Improvements

Good

Criteria Feedback

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Loading scores...

Official IB Result

IB Grade: 7

Criteria A: Research Design

6/6

Criteria StrandsPro

A.1Research question context

Excellent

A.2Methodological considerations

Good

A.3Methodology description

Moderate

Criteria Feedback

The student's research question is focused, quantitative, and clearly linked to a real biological application.
The student defines the key variables well, including temperature, reaction time, and glucose production rate.
The student's introduction gives the investigation a clear scientific and practical purpose.

Some background material is broader than needed and could be trimmed to better support the investigation.
The justification for the chosen temperature intervals could be explained more clearly.
A few methodological details are missing or underdeveloped, which weakens reproducibility.

Criteria B: Data Analysis

6/6

Criteria StrandsPro

B.1Communication of data recording and processing

Good

B.2Consideration of uncertainties

Moderate

B.3Data processing quality

Good

Criteria Feedback

The student's raw data are clearly organised and repeated measurements are presented for each temperature.
The student calculates means, rates, standard deviations, and SEM values, which shows substantial processing of the data.
The student's graph communicates the overall temperature trend well.

Some uncertainty statements are not precise enough and include unit problems.
The analysis relies too much on a linear correlation for a relationship that is expected to be non-linear.
The processing would be stronger if uncertainties were consistently carried through into the calculated rates and graph labels.

Criteria C: Conclusion

5/6

Criteria StrandsPro

C.1Conclusion relevance and consistency

Moderate

C.2Scientific context comparison

Moderate

Criteria Feedback

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.

Criteria D: Evaluation

4/6

Criteria StrandsPro

D.1Methodological weaknesses

Good

D.2Improvements

Good

Criteria Feedback

Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.
Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.